What causes a ray of white light to split into seven colors when passed through
prism?
Answers
Answer:
Dispersion of light
Explanation:
Related Questions
RR must build a tunnel to maintain his access around the mountain. The tunnel could be fabricated of normal steel for an initial cost of $45,000 and should last for 15 years. Maintenance will cost $1,000 per year. Another option would be to use corrosion resistant steel, which will last for 15 years, with annual maintenance cost of $100. In 15 years there would be no salvage value for either bridge. RR pays combined federal and state taxes at the 40% marginal rate and uses straight-line depreciation. If the after tax MARR is 12%, what is the maximum amount that should be spent on the corrosion-resistant tunnel
Answers
The maximum amount that should be spent on the corrosion-resistant tunnel is $38,500.
To calculate the maximum amount that should be spent on the corrosion-resistant tunnel directly:
For the normal steel tunnel:
Initial cost: $45,000
Annual maintenance cost: $1,000
Depreciation expense: ($45,000 - $0) / 15 = $3,000 per year
After-tax cost: $1,000 + ($3,000 - $1,000) × (1 - 0.4) = $1,600 per year
For the corrosion-resistant steel tunnel:
Annual maintenance cost: $100
Depreciation expense: X / 15 per year
After-tax cost: $100 + (X/15 - $100) × (1 - 0.4) = 0.6X/15 + $60 per year
We want to find the maximum X for which the annual after-tax cost of the corrosion-resistant tunnel is less than or equal to $1,600:
0.6X/15 + $60 ≤ $1,600
Now, let's solve this inequality to find the maximum value of X:
0.6X/15 ≤ $1,600 - $60
0.6X/15 ≤ $1,540
0.6X ≤ $1,540 * 15
0.6X ≤ $23,100
X ≤ $23,100 / 0.6
X ≤ $38,500
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n which order did the events forming our solar system occur?
The solar nebula became hot and dense pulling in more gas.This flattened into a rotating disk. It spun faster and faster, forming the Sun.
Gas was pulled toward the center, forming the Sun. Gas flattened into a rotating disk and became hot and dense, forming a solar nebula that spun faster and faster.
Gas flattened into a rotating disk and became hot and dense, forming a solar nebula that spun faster and faster. Gas was pulled toward the center, forming the Sun.
The solar nebula spun faster and faster and flattened into a rotating disk. Most of the gas was pulled toward the center, where it became hot and dense, forming the Sun.
Answers
Answer:
The solar nebula became hot and dense because of that it pulling in more gas. This flattened into a rotating disk. It spun faster and faster, forming the Sun.
Explanation:
hope this helps
The solar nebula became hot and dense because of that it pulling in more gas. This flattened into a rotating disk. It spun faster and faster, forming the Sun. This order did the events forming our solar system occur.
What is Solar nebula ?In the so-called nebular hypothesis of the genesis of the solar system, the Sun and planets originated by condensation from a gaseous cloud. In 1734, Swedish philosopher Emanuel Swedenborg claimed that the planets arose from a nebular crust that enveloped the Sun before breaking apart. Immanuel Kant, a German philosopher, proposed in 1755 that the Sun and planets were created by a slow rotating nebula that was eventually pushed together by its own gravitational force and flattened into a spinning disc. In 1796, the French astronomer and mathematician Pierre-Simon Laplace presented a similar concept, but with the planets forming before the Sun. The Kant-Laplace theories were criticised by the British physicist James Clerk in the late nineteenth century.
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What is the net force on a refrigerator that you push with an applied force of 125 N to the right and the (sliding) friction between the floor and the fridge is 95 N to the left? (b) As you increase the force applied to the fridge, will the friction force also increase? Explain. Hint: remember the force of friction between solid surfaces does not depend on speed
Answers
Answer:
hola
Explanation:
jffkbjkcvncncjcncjcjchchchcjcjcjcjcjckgmndjekbm hdfstfm mvndbfncn bdhwhgmvmch
how long does a low mass star stay on the main sequence
Answers
In summary, the amount of time a low mass star will stay on the main sequence is determined by its mass, radius, and temperature. Typically, a low mass star will remain on the main sequence for billions of years.
A low mass star is a star that is small in size, mass, and brightness. It is typically around 0.5-2 solar masses and is relatively cool compared to other types of stars. On the main sequence, which is the period when the star is fusing hydrogen into helium in its core, a low mass star can remain for a very long time. The length of time that a low mass star remains on the main sequence is determined by the rate at which it fuses hydrogen into helium in its core. This rate is determined by the star's mass, radius, and temperature. Generally, the lower the mass of the star, the longer it will remain on the main sequence. For example, a star with a mass of 0.5 solar masses will remain on the main sequence for around 20-30 billion years, while a star with a mass of 1 solar mass will remain on the main sequence for around 10 billion years.
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does food have energy?
Answers
Answer:
Yes.
Explanation:
Food provides units of energy in the form of calories that give our bodies fuel to perform all functions from the most basic like breathing to more complicated activities. We need a minimum amount of calories from food to sustain basic metabolic functions and more to carry out physical activities. The more active we are, the more food we need.
Answer:
yes
Explanation:
because Our body uses energy for all of its functions and food is the main source of energy. Food contains nutrients that when broken down in the gastrointestinal tract release energy that can be used by the body's cells, tissues and organs for normal function, growth and repair.
how can being physically fit help you emotionally
Answers
What type of interaction allows the sidewalk to heat up and cook the egg? absorption diffraction reflection transmission
Answers
By the processes of heat transfer, the sidewalk absorbs heat by radiation and cooks the egg.
What is heat energy?Heat energy is a form of energy that is due to difference in temperature between two bodies.
Heat energy always flow from hotter to colder bodies
The processes of heat transfer include;
conductionconvectionradiationThe sidewalk absorbs heat by radiation and cooks the egg.
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Answer:
absorption
Explanation:
A 2 kg book falls from a 1.5 m high shelf. What will the kinetic energy of the book be as it hits the
floor?
What is the velocity of the book from the first question as it hits the floor?
Answers
The kinetic energy of the book be as it hits the floor is - 29.4 kg(m²/s²) and the velocity of the book as it hits the floor is -5.422 m/s .
How is the kinetic energy calculated ?From the question we can get,
mass (m) = 2 kg
height (h) = 1.5 m
we know ,
P.E = mgh
∴ g =9.8 m/s
∴ P.E = 2 × 9.8 × 1.5
∴ P.E = 29.4 kg(m²/s²)
According to the law of conservation of energy, energy cannot be destroyed but can only be converted from one form to another. Because KE and PE are interconvertible, they do not violate the law of conservation of energy.
∴Total Energy = PE + KE
Because the total energy of the system will remain constant, total energy=0
∴ PE+KE=0
It means that
∴PE=-KE
Hence, the kinetic energy is - 29.4 kg(m²/s²)
How to calculate velocity ?We know,
K.E = 1/2 (mv² )
∴ -29.4 = 1/2 ( 2 × v²)
∴ -29.4 = v²
∴ v = √-29.4
∴ v = -5.422 m/s
Hence velocity of book is -5.422 m/s.
What is kinetic energy ?An object's kinetic energy is the energy it has as a result of its motion. It is defined as the amount of work required to accelerate a body of a given mass from rest to a certain velocity. The body retains its kinetic energy after gaining it during acceleration until its speed changes.
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Wich pair of factors affects the force of gravity between objects.
Answers
Answer:
Explanation:
Mass of the two objects effects gravity and so does the distance between them squared
A person rides in an elevator.
What is the equal and opposite force for the force of the elevator floor pushing up on the person as described by Newton's third law?
Answers
The equal and opposite force for the force of the elevator floor pushing up on the person as described by Newton's third law is the weight and the reaction force from its effect.
What is an Elevator?This is referred to as a device which is used in the vertical transportation of goods and people among the floors in a buildings.
When an individual steps into the elevator, the weight acts on it and it is known as a downward force while the reaction acts upward in an opposite reaction as described by Newton's third law in this scenario.
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a fixed earth required the distant stars to orbit the earth once a day.ptolemy’s estimate that the fixed stars were 20,000 earth radii apartrequired this fixed shell to orbit the earth how fast?
Answers
The fixed shell representing the distant stars would need to orbit the Earth at a speed that allows it to cover a distance equal to the circumference of its orbit in 24 hours.
If Ptolemy's estimate assumes that the fixed stars are 20,000 Earth radii apart, it implies that the fixed shell, representing the distant stars, would need to complete one full orbit around the Earth in a single day.
The fixed shell would need to orbit the Earth at a speed that allows it to cover a distance equal to the circumference of its orbit in 24 hours. The speed required for this orbit depends on the radius of the Earth's orbit.
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In the photo below, astronaut Alan Bean works at the Apollo 12 lander. Describe the horizon and the surface you see. What kind of terrain did they land on for this, the second human Moon landing, and why ?
Answers
Answer:
moon
Explanation:
I dont KNow
1. Metal paper clips do not attract or repel each other. When an electromagnet is placed nearby, the paper clips can be observed to move toward it. Which statement describes this phenomenon?
Paper clips turn into permanent magnets after exposure to a magnetic field.
The electromagnet reacts to the strong force of attraction from paper clips.
Electrons flow freely into the magnetic field, causing the paper clips to move.
Magnetic domains within the paper clips align with the magnetic field.
2. An electromagnet is built using a 9-volt battery with conducting wire connected to a switch and coiled around an iron nail. A pile of metal paper clips is moved close to the iron nail, yet no attraction is apparent between the electromagnet and the paper clips. What is the most likely conclusion to explain this result?
The switch is turned off.
The switch is turned on.
The paper clips are made of a nonmagnetic metal.
There are not enough coils of wire around the iron nail.
3. An experiment modeled the interaction between magnetic force and the change of energy of an object influenced by the magnetic force. The experiment’s researchers observed that the metal wheels of a small car turned as they experienced the force exerted by a magnetic field, drawing the car closer to the magnet. What energy is being gained by the car?
electrical energy
potential energy
kinetic energy
thermal energy
4. Which statement about the current and magnetic field correctly describes this figure as well as all electromagnets?
The current generates and is perpendicular to the magnetic field.
The current, which points upward, is generated by the sporadic magnetic field.
The current generates the magnetic field and is parallel and opposite to the direction of the magnetic field.
The current generated by the magnetic field is parallel and points in the same direction as the magnetic field.
5. Domains are the regions in a material in which the magnetic fields of many of the atoms are aligned facing the same direction. What is the relationship between the electrical current and the alignment of atoms responding to the current?
As current increases, the alignment reverts to its random arrangement.
As current decreases, the alignment becomes continuous.
The alignment of atoms has nothing to do with the changing current.
As current increases, the alignment becomes more organized.
Answers
Answer:
Metal paper clips do not attract or repel each other. When an electromagnet is placed nearby, the paper clips can be observed to move toward it. Which statement describes this phenomenon?
- Magnetic domains within the paper clips align with the magnetic field.
An electromagnet is built using a 9-volt battery with conducting wire connected to a switch and coiled around an iron nail. A pile of metal paper clips is moved close to the iron nail, yet no attraction is apparent between the electromagnet and the paper clips. What is the most likely conclusion to explain this result?
- The switch is turned off.
An experiment modeled the interaction between magnetic force and the change of energy of an object influenced by the magnetic force. The experiment’s researchers observed that the metal wheels of a small car turned as they experienced the force exerted by a magnetic field, drawing the car closer to the magnet. What energy is being gained by the car?
- Kinetic Energy
Which statement about the current and magnetic field correctly describes this figure as well as all electromagnets?
- The current generates and is perpendicular to the magnetic field.
Domains are the regions in a material in which the magnetic fields of many of the atoms are aligned facing the same direction. What is the relationship between the electrical current and the alignment of atoms responding to the current?
- As current increases, the alignment becomes more organized.
Explanation:
I just took the test and got a 4-5. I went back to look at the one I got wrong and got the answer so here are all answers to this quick check. Use this as help, don't use it just to cheat!!
Answer: nriesberg31 above is correct :)
Explanation
It's opening day at the State Fair, and you've decided to ride the roller coaster. You feel really heavy as the roller coaster car goes through a circular dip having a radius of 65 m.
A) At the lowest point in the dip,
the normal force of the track pushing up on you is less than mg because you're moving down.
the normal force of the track pushing up on you is equal to mg because the normal force and weight are the only forces and they balance.
the normal force of the track pushing up on you is greater than mg because there must be a net upward force.
B) At what speed will your apparent weight at the bottom of the dip be doubled? Express your answer with the appropriate units.
Answers
At the lowest point in the dip, the normal force of the track pushing up on you is greater than mg because there must be a net upward force.
Your apparent weight at the bottom of the dip will be doubled when your speed is 14 m/s.
A) When the roller coaster car is at the lowest point in the dip, it is moving in a circle. In order to keep moving in a circle, there must be a net force acting on the car in the direction of the center of the circle.
This force is called the centripetal force. The centripetal force is provided by the normal force of the track pushing up on the car.
The centripetal force is equal to the mass of the car multiplied by its velocity squared divided by the radius of the circle.
F = mv^2 / r
where:
F is the centripetal force (in N)
m is the mass of the car (in kg)
v is the velocity of the car (in m/s)
r is the radius of the circle (in m)
At the bottom of the dip, the velocity of the car is at its maximum. This means that the centripetal force must also be at its maximum. The only way for the centripetal force to be at its maximum is if the normal force is greater than mg.
B) The apparent weight of an object is equal to the normal force acting on the object. When the roller coaster car is at the bottom of the dip, the normal force is greater than mg. This means that the apparent weight of the car is greater than its actual weight.
The apparent weight of the car will be doubled when the centripetal force is equal to twice the weight of the car. This occurs when the velocity of the car is equal to the square root of twice the acceleration due to gravity times the radius of the circle.
v = sqrt(2 * g * r)
where:
v is the velocity of the car (in m/s)
g is the acceleration due to gravity (9.8 m/s²)
r is the radius of the circle (in m)
Substituting the values for g and r, we get:
v = sqrt(2 * 9.8 m/s² * 65 m) = 14 m/s
Therefore, your apparent weight at the bottom of the dip will be doubled when your speed is 14 m/s.
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The photo shows a toy spring. What kind of energy does the toy have because of its shape?
Answers
Answer:
elastic
Explanation:
if you stretch it it will go back to its shape, and also it is the only one that makes sense.
Answer:
Elastic
Explanation:
I got it right
A mover uses a pulley to lift a 2500N piano up to a second story balcony. The mover pauses to wipe sweat from his forehead while holding the rope tight in one hand. Since the piano is not moving at this time, what is the tension force in the rope while the piano is dangling still in the air?
Answers
Answer:
2500 N
Explanation:
Tension force may be defined as the force which is transmitted along a cable, rope, or through a string which is stretchable and is puled tight by the forces acting from the opposite sides. It is directed along the length of the string or the rope.
In the context, a pulley string holds a 2500 N piano that is used to lift it to second story balcony. When the piano is held stationary by the mover, the tension force acting on the rope is the weight force or the gravitational force that acts on the piano which is 2500 N. The tension force balances the the weight force of the piano when it is not moving.
The diagram below represents two horizontal platforms that are different height levels above ground ball rolls off the taller platform with a horizontal speed of 15 m/s in travels through the air landing on top of the short a platform. What is the total time the ball is in the air.
Answers
The total time the balls are in the air is 2.77 s.
The correct answer is option E.
To calculate the total time the ball is in the air, we need to analyze the vertical motion of the ball. Let's consider the given values:
Height of the taller platform (H1) = 6.0 m
Height of the shorter platform (H2) = 3.6 m
Horizontal speed of the ball (ux) = 15 m/s
We can neglect friction for this calculation. Since the ball rolls off the taller platform horizontally, the initial vertical velocity (uy) is zero. We can use the following equation to calculate the time of flight:
H = ut + (1/2)\(gt^2\)
Phase 1: Upward motion
In this phase, the ball moves vertically against the force of gravity. The acceleration due to gravity (g) is approximately 9.8 m/s^2. The initial vertical velocity (uy) is zero.
Using the equation of motion:
H1 = (1/2)\(gt^2\)
6.0 = (1/2)(\(9.8)t^2\)
12.0 =\(4.9t^2\)
\(t^2\) = 12.0 / 4.9
\(t^2\) ≈ 2.449
t ≈ \(\sqrt{2.449}\)
t ≈ 1.564 s
Phase 2: Downward motion
In this phase, the ball moves vertically downward. The final velocity in the upward phase (when it reaches the top of the shorter platform) is zero. We can calculate the time it takes to fall from the shorter platform using the same equation:
H2 = (1/2)g\(t^2\)
3.6 = (1/2)(9.8)\(t^2\)
7.2 = 4.9\(t^2\)
\(t^2\) = 7.2 / 4.9
\(t^2\) ≈ 1.469
t ≈ \(\sqrt{1.469}\)
t ≈ 1.212 s
Total time:
The total time the ball is in the air is the sum of the times for phase 1 and phase 2:
Total time = t1 + t2
Total time ≈ 1.564 + 1.212
Total time ≈ 2.776 s
Therefore, among the given options the correct one is option E.
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The question probable may be:
The diagram represents two horizontal platforms that are different height levels above ground ball rolls off the taller platform with a horizontal speed of 15 m/s in travels through the air landing on top of the short a platform. What is the total time the ball is in the air where H1 =6.0 m H2= 3.6m (NEGLECT FRICTION)
A.0.16 s
B. 0.70 s
C.0.49s
D. 1.1 s
E. 2.77 s
we observed a constant acceleration of our cart down the cart track. this implies that there was a constant force being applied to the cart. (think about .) what was generating this constant force?
Answers
We noticed that our cart was moving down the track at a continuous acceleration. This suggests that the cart was under a continuous force and that the constant force was being generated by the mass of the cart.
What is force?It is not possible for a thing to "have in it" or "contain" a force. One object experiences a force from another. The idea of a force includes both inanimate items and living things. A force can lower or modify the velocity of a massed item. Two simple ways to illustrate force are to push or pull. Given that it has both a magnitude and a direction, a force is a vector quantity.
How many types of force are there?Both direct force and distant action two different types of forces exist. It's clear that you utilize force consistently. Forces are just push and pull. You exert force on an object when you push or pull against it.
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Q2: The RMS potential difference of an AC household outlet is 117 v.
a) What is the maximum potential difference across a lamp connected to the outlet?
b) If the RMS current through the lamp is 5.5 A, what is the lamp's maximum current?
Answers
Answer:
(a) 165.46 V
(b) 7.78 A
Explanation:
(a) From the question,
Vrms = V₀/√2...................... Equation 1
Where V₀ = maximum potential difference across a lamp connected to the outlet.
make V₀ the subject of the equation.
V₀ = √2(Vrms)............... Equation 2
Given: Vrms = 117 V.
Substitute into equation 2
V₀ = (√2)(117)
V₀ = 165.46 V.
(b) Similarly,
I₀ = √2(Irms)....................... Equation 3
Given: Irms = 5.5 A
Substitute into equation 3
I₀ = (√2)(5.5)
I₀ = 7.78 A.
380 J amount of work is done on a system. Calculate the equivalent amount of heat produced.
a)380j
b)380 calories
c)90.91j
d)90.91 calorie
Answers
The equivalent amount of heat produced would be 380 J since the work done on the system is 380 J.
Understanding Heat with Respect to Principle of Conservation of EnergyAccording to Principle of conservation of energy which states that energy cannot be created or destroyed but can only be transformed from one form to another or transferred between systems.
In an isolated system, the total amount of energy remains constant.
Therefore, when work is done on a system, an equivalent amount of energy is transferred as heat.
Mathematically,
Workdone = Heat transfered
W = H or
W + H = 0
Therefore, the equivalent amount of heat produced would be 380 J.
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the weight of elephant is 40000N. The area of its feet in contact with the ground is 0.25 m2. Show your working and give the unit
Answers
Answer:
P=160000Pa
Explanation:
You haven't specified what to calculate
But looking at the parameters I think the question is asking to calculate the pressure exerted.
Pressure=Force/Area
P=40000/0.25m²
P=160000Pa
Which of the following would reduce wind erosion
Limiting irrigation
Cutting down trees
Planting vegetation
Clearing away dead leaves
Answers
I need help with this question and please show the whole work
and do it asap
If a star displays \( 0.0190 \) arcseconds of parallax, then long would it take to travel to that star if traveling at half the speed of light?
Answers
The first step is to convert the parallax angle of the star to distance. We can use the formula: parallax angle in arc seconds = (distance to star in parsecs)^-1 We can rearrange this equation to isolate distance: d = (parallax angle)^-1 Therefore, the distance to the star in parsecs is:
d = (0.0190 arcseconds)^-1 = 52.6 parsecs Next, we need to find the actual distance in meters. One parsec is equivalent to 3.09 × 10^16 meters. Therefore, the distance to the star in meters is: distance = (52.6 parsecs)(3.09 × 10^16 meters/parsec) = 1.63 × 10^18 meters Now, we can use the formula for time: d = vt Solving for time: t = d/v We are told to travel at half the speed of light, which is v = 0.5c, where c is the speed of light.
Therefore, the time to travel to the star is: t = (1.63 × 10^18 meters)/(0.5c) Using the speed of light, c = 3.00 × 10^8 m/s, we get: t = (1.63 × 10^18 meters)/(0.5 × 3.00 × 10^8 m/s)t ≈ 10.9 years Therefore, it would take about 10.9 years to travel to the star if traveling at half the speed of light.
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The altitude limit at which dedicated human climbers can climb without supplemental oxygen is about a. 5000 m. b. 8000 m. c. 12,000 m. d. 15,000 m.
Answers
The altitude limit at which dedicated human climbers can climb without supplemental oxygen is about (b) 8000 m (26,247 ft). At this altitude, the atmospheric pressure is around 356 mmHg, which is less than half the pressure at sea level.
The lower pressure means that the partial pressure of oxygen in the air is also lower, making it difficult for humans to extract enough oxygen to support bodily functions. Climbers who attempt to climb higher than 8000 m often rely on supplemental oxygen to help them breathe.
The use of supplemental oxygen can help climbers perform better and avoid altitude sickness, which can cause nausea, headaches, and other symptoms. However, it does not eliminate all the risks associated with high-altitude climbing.
Therefore, the correct answer is (b) 8000 m.
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what is all of the living organisms in an ecosystem
Answers
Answer:
species of plants, animals, and fungi, as well as all the micro-organisms.
Explanation:
PLEASE HELP! WILL GIVE BRAINLIEST IF POSSIBLE!
Answers
Answer:
mm yummy
Explanation:
Could gold be made from other elements?
Answers
Answer:
Yeah, you can make gold from other elements.
Explanation:
To make gold out of other elements you need to have a nuclear reaction.
I hope it helps! Have a great day!
Muffin ^^
Answer:
Yes.
Explanation:
Gold can be made from other elements but it is too expensive so it’s not really worth it.
I hope it helps! Have a great day!
bren~
g a 74.0 kg sprinter starts a race with an acceleration of 1.52 m/s2. what is the net external force (in n) on him? (enter the magnitude.)
Answers
The net external force acting on the sprinter is 112 N.
We can use Newton's Second Law of Motion, which states that the net force acting on an object is equal to the mass of the object multiplied by its acceleration:
F_net = m * a
where:
- F_net is the net external force acting on the object, in Newtons (N)
- m is the mass of the object, in kilograms (kg)
- a is the acceleration of the object, in meters per second squared (m/s^2)
Plugging in the given values:
F_net = (74.0 kg) * (1.52 m/s^2)
= 112 N
Therefore, the net external force acting on the sprinter is 112 N.
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One third of a certain distance covered with a speed of 30 km/h and the remaining distance was covered in two halves with a speed of 60 km/h and 90 km/h respectively, find the average speed of the entire trip.
Answers
Average speed = d / (d/30 + x/60 + (2/3 - x)/90)
The above formula gives the average speed of the entire trip.
Let the distance be d km. As per the given question, One-third of the distance is covered at a speed of 30 km/h. Rest of the distance, i.e., two-thirds of the distance is covered in two halves with a speed of 60 km/h and 90 km/h respectively.
Distance covered in the first part = (1/3)d km
Time taken = d / 30 hours
Distance covered in the second part = (2/3)d km
Let us assume that in the second part, the distance covered at 60 km/h is x km. So the distance covered at 90 km/h will be (2/3 - x) km.
Time taken by the car to cover the distance x at 60 km/h is x / 60
Time taken to cover the distance (2/3 - x) km at 90 km/h is (2/3 - x) / 90
Total time taken to cover the distance = d/30 + x/60 + (2/3 - x)/90
For the entire trip, the average speed can be calculated as follows:
Average speed = Total distance / Total time
Let's find the total distance first:
Total distance = d km
Total time = d/30 + x/60 + (2/3 - x)/90
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A student investigates the effect of a crumple zone on the force exerted during a collision The student has one trolley with a spring at the front and another trolley without a spring
silver foil
spring
silver foil
trolley
The student uses the arrangement in Figure 10.
trolley
silver foil
ramp
trolley
silver foil
rigid wall
too
Figure 10
000 ms
millisecond timer
After a trolley is released, it accelerates down a slope and bounces off a rigid wall
The speed of a trolley can be measured just before a collision with the wall and just after a collision with the wall.
The silver foils are connected to a millisecond timer.
The silver foils make contact with each other during the collision, so the time they are in contact can be read from the millisecond timer.
Explain how the student could investigate the effect of a crumple zone on the average force exerted during the collision.
Your explanation should include:
how to determine the force (you may wish to refer to an equation) how the effect of crumple zones may be shown in the investigation precautions that may be necessary to achieve accurate results.
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Answers
The impulse allows to calculate which material is better to reduce the damage in a crash are:
Measure the speeds, time and calculate the force for each deformation, with the relationship.The best deformation zone is the one that gives the least force. Some care must be taken.* The most important is that the system starts from the same point so that the speed before the crash is always the same.
* The second is that the mass of the car plus the training materials is always the same.
* Check the zero and streamline of the equipment before measurements.
The student can use the relationship between impulse and momentum variation.
I = ∫ F dt = Δp
Where I is the momentum, F the force, t the time and Δp the variation of the momentum.
The momentum is defined by the product of the mass of the vehicle and the speed.
p = m v
Where m is the mass and v the velocity.
Since you want the average force, you can take the force out of the integral.
F t = m v_f -m v₀
They indicate that the system can measure the speed just before and after the collision with the wall, it is also capable of measuring the time of the collision, therefore we can calculate the force with the expression.
\(F = m \ \frac{v_f - v_o}{t}\)
therefore the student can calculate the force for each type of deformation zone. The best deformation zone is the one that gives the least force.
Several cautions must be taken in the experiment:
* Exit from the same point each time.
* Keep the mass constant for the whole experiment, for this, care must be taken with the different weights of each material.
* Check that the equipment is properly calibrated and reset to zero before starting each measurement.
Learn more about impulse here: brainly.com/question/904448