Answers
With 4.3 m/s velocity, is the cheetah running.
velocity= distance/time
distance=27.6 m
time=6.3 s
velocity=27.6 m/6.3 s
velocity=4.3 m/s
A vector number known as velocity describes "the pace at which an item changes its location." Imagine a person moving quickly, taking one stride ahead, one step back, and then beginning from the same place each time. A vector quantity is velocity. As a result, velocity is aware of direction. One must consider direction while calculating an object's velocity. Saying that an item has a velocity of 55 miles per hour is insufficient. The direction must be included in order to adequately characterize the object's velocity. Simply said, the velocity vector's direction corresponds to the motion of an item.
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Related Questions
SCIENCE
Why is the nervous system in the human body a system?
A. It is made of tissues that can conduct electricity, a required function in a system.
B. Like all systems, the nervous system is contained within a living organism.
C. It is made of several components that act interdependently to perform a function as a whole.
D. The nervous system acts together with other systems to control a larger organism
Answers
Answer:
A. It is made of tissues that can conduct electricity, a required function in a system.
Explanation:
The nervous system helps all the parts of the body to communicate with each other. It also reacts to changes both outside and inside the body. The nervous system uses both electrical and chemical means to send and receive messages.
Answer:
D
Explanation:
it is D because a system needs to manage a large organism like us to allow us to live, therefore, needs to work with other systems to keep us alive
23. Identify the region, where the magnetic field around a current carrying solenoid is
uniform.
24.i. Two circular coils P and Q are kept close to each other, of which, coil P carries a
current. Will some current be induced in coil Q if coil P is moved towards Q ? Givea
reason for your answer and name the phenomenon involved.
ii. What happens, if coil P is moved away from Q?
iii. State few methods of inducing current in a coil.
25. Compare the permanent magnet and an electromagnet.
26. A current_carrying conductor is placed perpendicular to the uniform magnetic field.
What happens to displacement of the conductor if
(i) Amount of current increases
(ii) If horse shoe magnet is replaced by a weak horse shoe magnet.
27. A circular metallic loop is kept above the wire AB as shown below:
A
B
Answers
Answer:
25 and 24
Explanation:
Answer:
Explanation:
The region where the magnetic field around a current-carrying solenoid is uniform is inside the solenoid.
Yes, some current will be induced in coil Q if coil P is moved towards Q. This is due to the phenomenon of electromagnetic induction. When a changing magnetic field passes through a coil, it induces an electromotive force (EMF) in the coil, causing a current to flow. The movement of coil P towards coil Q will result in a changing magnetic field, inducing a current in coil Q.
If coil P is moved away from coil Q, the magnetic field passing through coil Q will decrease, resulting in a change in the magnetic flux. This change in magnetic flux will induce an EMF in coil Q, causing a current to flow in the opposite direction compared to the previous scenario.
iii. Some methods of inducing current in a coil include:
Moving a magnet towards or away from the coil
Changing the magnetic field through the coil by varying the current in a nearby coil
Rotating a coil in a magnetic field
Changing the area of the coil within a magnetic field
Comparison between a permanent magnet and an electromagnet:
Permanent Magnet: It is made of materials that are naturally magnetic, such as iron, cobalt, or nickel. It has a constant magnetic field and does not require an external power source to generate the magnetic field.
Electromagnet: It is made by wrapping a current-carrying coil (usually around an iron core). The magnetic field of an electromagnet can be controlled by varying the current flowing through the coil. It requires an external power source (such as a battery) to generate the magnetic field.
(i) If the amount of current in the conductor increases, the displacement of the conductor will experience a greater force. According to the right-hand rule, the force experienced by a current-carrying conductor is directly proportional to the current and the magnetic field strength. Therefore, an increase in current will result in a larger force and may lead to a greater displacement of the conductor.
(ii) If the horse shoe magnet is replaced by a weak horse shoe magnet, the displacement of the conductor may be less pronounced. This is because a weaker magnetic field will exert a smaller force on the current-carrying conductor, resulting in a reduced displacement.
The description of the circular metallic loop above the wire AB is missing. Please provide additional information or context for a more accurate response.
What is the answer of this crossword. Non-renewable resources found deep in the ground. 1 ____ 2____ 3____ 4 E 5____ 6____ 7____ 8 S
Answers
Answer:
Crude oils
Explanation:
The correct word should be crude oils.
Crude oil is a non-renewable resource that is geologically formed and found deep in the ground. It is a naturally occurring mixture of hydrocarbons and usually fractionated to serve different purposes for the use of man. Crude oils are non-renewable because the rate at which humans exploit them is quite faster than the rate at which they are being naturally replenished deep in the ground.
When a p.D of 150 qpplied to the plates of a parallel plate. The plate carry a surface charge density of 30nc/cm^2 what is the spacing bettwen the plates
Answers
Answer:
d = 4.425 x 10⁻⁶ m = 4.425 μm
Explanation:
The charge on plates can be given as:
\(q = \sigma A=CV\\where,\\\\C = Capacitance\ of\ parallel\ plate\ capacitor = \frac{\epsilon_oA}{d}\\\\therefore,\\\\\sigma A=(\frac{\epsilon_oA}{d})V\\\\d = (\frac{\epsilon_o}{\sigma})V\)
where,
d = spacing between plates = ?
ε₀ = Permitivity of free space = 8.85 x 10⁻¹² C²/Nm²
σ = surface charge density = (30 nC/cm²)(10⁻⁹ C/1 nC)(1 cm²/10⁻⁴ m²)
σ = 3 x 10⁻⁴ C/m²
V = Potential Difference = 150 V
Therefore,
\(d = \frac{(8.85\ x\ 10^{-12}\ C^2/Nm^2)}{3\ x\ 10^{-4}\ C/m^2}(150\ V)\\\)
d = 4.425 x 10⁻⁶ m = 4.425 μm
True/False. of all the galilean satellites, the surface of europa is the youngest in age.
Answers
The given statement is True. All the galilean satellites, the surface of europa is the youngest in age.
Europa, one of Jupiter's Galilean satellites, is believed to have the youngest surface in comparison to the other Galilean moons: Io, Ganymede, and Callisto.
Europa's surface is characterized by a network of ridges, cracks, and chaotic terrain.
The presence of few impact craters suggests that the surface is geologically young and has been resurfaced relatively recently in geological time scales.
It is thought that the surface may have been formed by processes such as tectonic activity, cryovolcanism, and subsurface oceanic activity.
In contrast, Ganymede and Callisto have much more heavily cratered surfaces, indicating that they have experienced much less resurfacing activity than Europa.
Io, on the other hand, has a highly volcanic and active surface that is constantly being resurfaced, but its surface is not as young as Europa's.
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A 0. 10 kg ball falls 10. 0 m onto a hard floor and then bounces back up to 9 m. How much of its mechanical energy is transformed to the internal energy of the ball and the floor?
Answers
Approximately 9% of the mechanical energy of the ball is transformed into internal energy of the ball and the floor.
When the ball falls and bounces back up, some of its initial mechanical energy is lost as it is converted into internal energy. The mechanical energy of the ball consists of its potential energy (mgh) when it is at a height of 10.0 m and its kinetic energy (1/2 mv^2) when it is at a height of 9.0 m. The loss in mechanical energy is due to factors like deformation of the ball and floor, sound, and heat generated upon impact.
To calculate the percentage of energy loss, we need to compare the difference in mechanical energy before and after the bounce. The difference is approximately 0.81 J. Dividing this by the initial mechanical energy (81 J) and multiplying by 100 gives us the percentage, which is approximately 9%. Therefore, around 9% of the mechanical energy is transformed into internal energy of the ball and the floor during the bounce.
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which car has a westward acceleration? a. a car moving west at constant speed. b. a car moving east and speeding up. c. a car moving east and slowing down. d. a car moving west and slowing down
Answers
C. If a car has a westward acceleration, the car moving east and slowing down.
What is westward acceleration?
Westward acceleration is the acceleration of an object directed towards the west of the object's motion.
The acceleration of an object is defined as the change in the velocity of an object with time.
Mathematically, the acceleration of an object is given as;
a = Δv/Δt
where;
Δv is change in velocity of the objectΔt is change in time of motion of the objecta = (v - u) /t
where;
v is the final velocityu is the initial velocityWhen the car is slowing down, it implies that the final velocity is smaller compared to the initial velocity.
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An engineering team has come to the stage in the engineering design process in which it is iterating to improve the solution. hat is one thing the team might be doing ?
Answers
When an engineering team reaches the stage of iterating to improve the solution in the engineering design process, there are various activities that the team might be doing. One of the most crucial activities at this stage of the design process is testing. Here are a few things that an engineering team might do to test and improve the solution:
Prototyping: This involves building a physical or digital prototype that can be tested and refined based on feedback from stakeholders. The team can then use this prototype to identify any design flaws and make the necessary changes.Simulation: Simulation involves creating a virtual model of the solution and testing it under various conditions. The team can use simulation to identify potential problems with the solution before it is built.User testing: User testing involves testing the solution with real users to get feedback on how well it works and how it can be improved. The team can use this feedback to make changes to the design and improve the user experience.Feedback analysis: This involves analyzing feedback from stakeholders, including users, customers, and other members of the team. The team can use this feedback to identify areas for improvement and make changes to the design.The key to iterating to improve the solution is to be open to feedback and willing to make changes. By continuously testing and refining the design, the engineering team can create a solution that meets the needs of stakeholders and achieves the desired outcomes.For such more question on stakeholders
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if you push on a crate with a horizontal force of 120 n and it slides at constant velocity, how much is the friction acting on the crate?
Answers
The friction acting on the crate is zero. It is because the crate moves with a constant speed. The result is obtained by using the Newton's first law.
What is Newton's first law?Newton's first law states that every object will remain at rest or keep constantly moving in a straight line unless an external force acts upon it.
The equation of Newton's first law can be expressed as
∑F = 0
A crate is pushed horizontally with
Force, F = 120 NConstant velocityFind the friction acting on the crate!
According to Newton's first law, when an object moves at a constant speed, the net force would be zero.
∑F = 0
So, there is no acceleration of the object.
If there is no acceleration, then there is no friction force acting on the object. It means there is no friction acting on the crate.
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the blueness of the daytime sky is due mostly to light _______.
Answers
The blueness of the daytime sky is due mostly to light scattering.
The Earth's atmosphere is composed of particles such as nitrogen and oxygen molecules, which scatter sunlight in all directions. Blue light is scattered more than other colors because it travels as shorter, smaller waves. This is why the sky appears blue to us during the day. At sunrise and sunset, the light has to pass through more of the atmosphere to reach us, and the blue light is scattered out, giving the sky a reddish or orange hue.
During the daytime, light scattering is the phenomenon that causes the blue color of the sky. When sunlight enters the Earth's atmosphere, it interacts with the gas molecules, particularly nitrogen and oxygen. These molecules are much smaller than the wavelength of visible light, and so they scatter the light in all directions.
However, blue light has a shorter wavelength and higher energy than other colors, such as red and orange. When blue light interacts with the gas molecules, it is scattered much more than the other colors. As a result, the blue light is scattered in all directions, creating a blue sky that we see during the day.
The reason why the sky is not always blue is that the amount of scattering depends on the number of gas molecules in the atmosphere. During sunrise or sunset, when the sun is near the horizon, the light has to travel through more of the Earth's atmosphere to reach our eyes. This means that more of the blue light is scattered away, and the remaining light appears to be reddish or orange.
In summary, light scattering during the daytime is the process by which the gas molecules in the Earth's atmosphere scatter sunlight in all directions, with blue light being scattered more than other colors, resulting in the blue color of the sky.
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What is the unknown mass of the second box shown in the collision below?
Before collision: v= 6 m/s, 7kg
stationary: m
After collision: v= 2 m/s, 7 kg, m
Answers
Answer:
We can use conservation of momentum to solve for the unknown mass of the second box. The total momentum before the collision is equal to the total momentum after the collision.
Before collision:
p = m1v1 = (7 kg)(6 m/s) = 42 kg m/s
After collision:
p = m1v1 + m2v2 = (7 kg)(2 m/s) + m(2 m/s)
Setting the two expressions for momentum equal to each other, we can solve for m2:
42 kg m/s = (7 kg)(2 m/s) + m(2 m/s)
42 kg m/s = 14 kg m/s + 2m kg m/s
28 kg m/s = 2m kg m/s
m = 14 kg
Therefore, the mass of the second box is 14 kg
How is thermal energy transferred during conduction? check all that apply.
Answers
Answer:
Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules
Explanation:
the unit of pressure is derived unit, why?
Answers
Answer:
I hope you understand it.
I had presented answer very clearly would you mark brainliest
If 5800 J of work is done when a person pushes a refrigerator weighing 720 N across a floor where the force of friction between the refrigerator and the floor is 480 N, how far is the refrigerator going to move? (Make sure to put the correct unit on your answer. ) *
Answers
Work done when a person pushes a refrigerator Here are the steps to solve the problem:Refrigerators work on the second law of thermodynamics. In the process of refrigeration, unwanted heat is taken from one place and discharged into another. The common refrigerator which we have in our homes, works on the principle of evaporation.
1. Work done = Force × DistanceorDistance = Work done / Force
2. Force = Weight - Frictional force
3. Substitute the given values in the formulas above and solve the equation.1.
Work done = 5800 JForce = Weight - Frictional force= 720 N - 480 N= 240 NDistance = Work done / Force= 5800 J / 240 N= 24.2 mThus, the refrigerator is going to move 24.2 meters. The unit of distance is meter (m).
Therefore, the correct answer is 24.2 m.
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A 25 kg object is at rest. Calculate the momentum of the object.
Answers
Answer:
there is no momentum
Explanation:
if an object is at rest there is no momentum to build, no speed, no acceleration it does not move unless force is acted upon it.
The best place for me to position an alternate air source is...
a. loose by my side so I can find it fast
b. in the triangle area formed by my chin and the lower corners of my rib cage
c. the base of my cylinder
d. to the back of my BCD between my shoulder blades and waist
Answers
In the triangle area formed by my chin and the lower corners of my ribcage. This position allows for easy access to the alternate air source while keeping it secure and streamlined. It minimizes the chance of entanglement and ensures quick retrieval in an emergency situation.
The best place for you to position an alternate air source is in the triangle area formed by your chin and the lower corners of your rib cage. This location allows for easy access in case of an emergency and also allows for quick deployment of the alternate air source. Placing it at the base of your cylinder or in the back of your BCD can make it harder to reach in case of an emergency.
This position allows for easy access to the alternate air source while keeping it secure and streamlined. It minimizes the chance of entanglement and ensures quick retrieval in an emergency situation.
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The diagram shows a 2.0-kilogram cart traveling at a constant speed in a horizontal circle of radius 3.0 meters. The magnitude of the centripetal force of the cart is 24
newtons. What is the speed of the cart?
a) 6.0 m/s
b) 16 m/s
c) 36 m/s
d) 4.0 m/s
Answers
Can I get a Brainly
A 2.0-kilogram cart traveling at a constant speed in a horizontal circle of radius 3.0 meters. The magnitude of the centripetal force of the cart is 24 newtons. The speed of the car is 6 m/s. Thus, Option A is the correct answer.
To find the speed, the given values are,
Mass m = 2 Kg
Radius r =3 meters
Centripetal force = 24 Newtons.
What is Centripetal force?A centripetal force is the force which is made up of two Latin words centrum which means center and peterum which means to seek.
It is defined a force which make a body to follow a curved path. The direction of this force is always orthogonal to the body's motion and it is always towards the fixed point which is instantaneous center of the path's curvature.
Centripetal force is expressed according to the formula;
F = mv²/r
m is the mass of the body
v is the speed of the cart
r is the radius
Substituting the values into the formula and get v,
24 = 2v²/3
24×3 = 2v²
72 = 2v²
v² = 72/2
v² = 36
v =√36
v = 6m/s
Hence, the speed of the cart is 6m/s. Thus, Option A is the correct answer.
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For the following problem determine the unknown variable. a car traveling at 30.0m/s is decelerating at a constant rate of -4m/s squared. after traveling 40 m how fast is the car still moving?
Answers
It's rounded to two decimal places, is approximately 24.08 m/s. Therefore, the car is still moving at a speed of 24.08 m/s after traveling 40 m while decelerating at a constant rate of -4 m/s².
To determine how fast the car is still moving after traveling 40 m while decelerating at a constant rate of -4 m/s², we can use the kinematic equation that relates initial velocity (v₀), final velocity (v), acceleration (a), and displacement (d):
v² = v₀² + 2ad
Given that the initial velocity (v₀) is 30.0 m/s, the acceleration (a) is -4 m/s², and the displacement (d) is 40 m, we can substitute these values into the equation:
v² = (30.0 m/s)² + 2(-4 m/s²)(40 m)
v² = 900 m²/s² + 2(-4 m/s²)(40 m)
v² = 900 m²/s² - 320 m²/s²
v² = 580 m²/s²
\Taking the square root of both sides of the equation gives us:
v = √580 m/s
It's rounded to two decimal places, is approximately 24.08 m/s. Therefore, the car is still moving at a speed of 24.08 m/s after traveling 40 m while decelerating at a constant rate of -4 m/s².
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does uranium use steam?
Answers
Answer:
Yes.
Explanation:
Reactors use uranium for nuclear fuel. The uranium is processed into small ceramic pellets and stacked together onto sealed metal tubes called fuel rods. The heat created by fission turns the water into steam.
List some factors that would affect the speed of the car.
Answers
Answer:
The power of the car, the gear ratio, weight of the car, aerodynamics of the car, grip of the tires on the road, calorific value of the fuel used, and friction would affect the speed of the car.
A metal sphere of radius 19 cm has a net charge of 2.1×10−8 C. (a) What is the electric field at the sphere's surface? (b) If V=0 at infinity, what is the electric potential at the sphere's surface? (c) At what distance from the sphere's surface has the electric potential decreased by 560 V ?
Answers
A metal sphere of radius 19 cm has a net charge of 2.1×10−8 C. (a) What is the electric field at the sphere's surface?
Given data, Radius of metal sphere, r = 19 cm Net charge, Q = 2.1×10−8 C The electric field at the surface of a charged sphere is given by the formula E = σ/ε0Where, σ is the surface charge density, σ = Q/A (where A is the surface area of the sphere)ε0 is the permittivity of free space, ε0 = 8.85 × 10-12 C²/N·m²Calculation of electric field: Surface area of the sphere = 4πr² = 4 × π × (0.19)² = 0.45 m²
Surface charge density σ = Q/A = 2.1×10−8 C/0.45 m²
= 4.67 × 10^-8 C/m²
Electric field E = σ/ε0 = (4.67 × 10^-8 C/m²)/(8.85 × 10^-12 C²/N·m²)
= 5255 N/C (up to 4 decimal places)
Therefore, the electric field at the surface of the sphere is 5255 N/C.
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How many stars in the star rating label of an electrical appliance should be used? Explain your answer.
Answers
Answer:
5 Stars
Explanation:
Because every Star from 1 to 5 vary energy consumption of the electrical device...So 5 star product uses a very less energy compared to 1 star product...
Hope it is helpful
There are 0 to 5 star are used in the star rating label of electrical appliance.
What is stars label in electrical appliance?The appliance is more energy efficient if it has more stars on the Energy Rating Label. To perform at the same level as comparable models of the same size or capacity, efficient appliances require less electricity. A model will use less energy and cost you less to run if it is more energy efficient.
Example a 3-star refrigerator saves a lot more energy compared to a 2 star.
Number of stars in the star rating label of an electrical appliance should be used is five for most efficient electrical device.
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What would the velocity of the object be at time = 50s
Answers
A foam square has a mass of 62 g and a volume of 72 cm3. What is the density?
Answers
Answer:
36cm
Explanation:
State two units bigger than kilogram and how are they related to kilogram
Answers
Answer:
quintal and metric tone.
Explanation:
1 quintal= 100kg
1 metric =1000kg
quintal measures mass of cars, trucks etc, but metric measures bigger things like cargo ships
hope it helps
A ball of mass 2kg is thrown up with a speed of 10m/s. find the kinetic energy of the ball at the time of throwing. Also find the potential energy of the ball at the highest point?
Answers
The potential energy of the ball at the highest point is 100.98J
The kinetic energy of the ball at the time of throwing can be calculated using the formula KE = 1/2mv^2, where m is the mass of the ball and v is its velocity. In this case, the mass of the ball is 2kg and the velocity at the time of throwing is 10m/s. Substituting these values into the formula gives:
KE = 1/2 x 2kg x (10m/s)^2
KE = 100J
Therefore, the kinetic energy of the ball at the time of throwing is 100J.
At the highest point of the ball's trajectory, it reaches a point of zero velocity. At this point, all of the kinetic energy of the ball has been converted into potential energy due to its position in the Earth's gravitational field. The potential energy of an object at a height h above the ground can be calculated using the formula PE = mgh, where m is the mass of the object, g is the acceleration due to gravity (approximately 9.8 m/s^2 near the surface of the Earth), and h is the height of the object above the ground.
At the highest point, the velocity of the ball is zero and its height is at its maximum. Assuming the initial height of the ball was 0, the height of the ball at the highest point can be calculated using the formula h = v^2/2g, where v is the initial velocity of the ball. In this case, the initial velocity is 10m/s, so the height of the ball at the highest point is:
h = (10m/s)^2/2 x 9.8m/s^2
h = 5.1m
Substituting the mass of the ball and the height into the potential energy formula gives:
PE = 2kg x 9.8m/s^2 x 5.1m
PE = 100.98J
Therefore, the potential energy of the ball at the highest point is approximately 101J.
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7. For any given motion, the distance is
Answers
Answer:
For any given motion, the distance is
Explanation:
Explanation:
Given:
v₀ = 5.0 m/s
a = 2.5 m/s²
Equation:
Δx = v₀ t + ½ at²
Δx = (5.0 m/s) t + ½ (2.5 m/s²) t²
Δx = 5t + 1.25t²
Make a table of data using 1.0 increments for t.
Graph the data. See included image.
why does somthing fall faster if it is heavier
Answers
why does something fall faster if it is heavier?
➪ First of all I would like to inform you that this statement is not true. The acceleration does not depend on the mass of the object. Heavier things have a greater gravitational force AND heavier things have a lower acceleration. It turns out that these two effects exactly cancel to make falling objects have the same acceleration regardless of mass.
Lets see
According to Newton's second law
\(\\ \rm\rightarrowtail F=ma\)
F denotes to forcem denotes to massa denotes to acceleration\(\\ \rm\rightarrowtail F\propto m\)
If mass is more force of gravity is more.\(\\ \rm\rightarrowtail m\propto \dfrac{1}{a}\)
If mass is more acceleration is less or air resistance is less .So heavier objects fall faster than lighter ones .
Based on Newton's 3rd law, the force pairs always act on what?
(someone please answer i need help)
Answers
Answer:
Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.
Explanation:
Newton's third law: If an object A exerts a force on object B, then object B must exert a force of equal magnitude and opposite direction back on object A. This law represents a certain symmetry in nature: forces always occur in pairs, and one body cannot exert a force on another without experiencing a force itself.
6. A penny and a feather fall for 4 seconds inside of a very tall vacuum tube (meaning no air resistance) on earth. Calculate the penny's velocity after it has fallen for 4 seconds.
a. what is the feather's velocity
b. Explain the results of you velocity calculations why are they similar or different
Answers
The penny's velocity after 4 seconds will be approximately 39.2 meters per second (m/s) and the feather's velocity after 4 seconds will also be approximately 39.2 m/s.
What is velocity?Velocity is the rate of change of the position of an object with respect to time. It is a vector quantity, which means it has both magnitude and direction. It is usually measured in meters per second (m/s) or kilometers per hour (km/h). It is one of the fundamental concepts of physics, as it is used to calculate the motion of objects.
The penny's velocity after 4 seconds will be approximately 39.2 meters per second (m/s). This is calculated by multiplying the acceleration due to gravity of 9.8 m/s2 by the time of 4 seconds.
The feather's velocity after 4 seconds will also be approximately 39.2 m/s. This is because both the penny and the feather are subject to the same gravitational force, and thus have the same acceleration. Therefore, both the penny and the feather will have the same velocity after 4 seconds of falling in a vacuum tube.
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