Answers
Hi there!
We can begin by solving for the velocity in which the ball was thrown at using the following:
\(v_f^2 = v_i^2 + 2ad\)
At the top of the trajectory, the ball's velocity is equal to 0 m/s, so:
\(0 = v_i^2 + 2ad\\\\vi^2 = 2ad \\\\\)
'a' = acceleration due to gravity and 'd' is the max height, so:
\(v_i^2 = 2(10)(5)\\\\v_i^2 = 10 m/s\)
Now, we can use the same equation to calculate the final speed at 4.5 m. Remember, the acceleration is NEGATIVE in this instance (taking the negative direction to be in the direction of gravity).
\(v_f^2 = 10^2 - 2(10)(4.5)\)
\(v_f^2 = 10^2 - 2(10)(4.5)\\\\v_f^2 = 100 - 90 \\\\v_f^2 = 10 \\\\v_f = \boxed{3.1 m/s}\)
Related Questions
Part of a bird's digestive tract, called a gizzard, is able to break up large chunks of food at an extremely fast rate. It is difficult for
scientists to watch a gizzard functioning in a live bird. How would building a model of a gizzard help a scientist?
A. to analyze how a gizzard works
В.to study bird behavior
C.to determine what type of tissues a real gizzard is made of
D.to watch a gizzard functioning in life
Answers
GoodLuck !
Answer:A:
To analyze how a gizzard works.
Explanation:
If you know this please help me !!
Answers
Size of the Milky Way The speed of light is about 186,000 miles per second. The Milky Way galaxy has an approximate diameter of 6×10¹⁷ miles. Estimate, to the nearest thousand, the number of years it takes for light to travel across the Milky Way. (Source: C. Ronan, The Natural History of the Universe.)
Answers
The time it takes for light to travel across the Milky Way galaxy is approximately 102,000 years (to the nearest thousand)
The speed of light is 186,000 miles per second. The Milky Way galaxy has an approximate diameter of 6 × 10¹⁷ miles. Therefore, we can estimate the time it takes for light to travel across the Milky Way by dividing the distance by the speed of light. Using this formula, we can say that:
Time taken for light to travel across the Milky Way galaxy= 6 × 10¹⁷ miles/186,000 miles per second= 3.23 × 10¹² seconds.1 year has 365.25 days, and each day has 24 hours, each hour has 60 minutes and each minute has 60 seconds.
So the number of seconds in one year = 365.25 days × 24 hours × 60 minutes × 60 seconds= 31,536,000 seconds.
Therefore, we can determine the time it takes for light to travel across the Milky Way in years by dividing the time taken by the number of seconds in a year, as follows:
3.23 × 10¹² seconds/31,536,000 seconds per year= 1.02 × 10⁵ years.
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1. What aspect of electricity did Ben Franklin’s experiment demonstrate?
2. What evidence exists that he actually performed this experiment?
3. Why do some scientists and historians doubt this story?
4. Do you think that Franklin actually performed this experiment? Why or why not?
5. Did anyone else try repeating this experiment? If so, identify the person and when they did so. Then, describe the experiment’s results.
6. Examine the postings of your classmates, and post any additional data/evidence that you found that might have been overlooked
Answers
1. The relationship between lightning and electricity was made clear by Franklin's experiment.2. He submitted a plan for an experiment in which a lightning rod would be used to attempt to capture an electrical charge. 3,4. Some scientists and historians doubt this story because it's highly unlikely that lightning struck a key while Franklin was flying a kite because he would have most likely perished5. . Noone else try repeating this experiment
Do you think that Franklin actually performed this experiment?
The experiment was not carried out by Franklin to demonstrate the presence of electricity. Furthermore, it's highly unlikely that lightning struck a key while Franklin was flying a kite because he would have most likely perished.
He submitted a plan for an experiment in which a lightning rod would be used to attempt to capture an electrical charge in a "leyden jar," a container for storing electrical charges, proving that lightning was a type of electricity. Noone else try repeating this experiment.
Franklin established that lighting was an electrical discharge through the kite experiment and discovered that it could be charged into the ground over a conductor, offering a secure alternate route and reducing the possibility of fatal fires.
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Why would a nation impose an import quota?
O to increase its exports to other nations
to increase its national standard of living
O to redistribute wealth from the rich to the poor
O to protect domestic industries from foreign competition
Answers
Quotas are used by nations in international trade to control the amount of trade that occurs between them and other nations.
Who stands to gain from an import cap?Governmental restrictions on the amount of a specific commodity that can be imported into a nation are known as import quotas. Such quotas are typically implemented to safeguard indigenous sectors and weaker producers.
What benefits and drawbacks do import quotas have?Import quotas provide the advantage of maintaining domestic pricing, enabling domestic companies to capture a larger market share, and protecting emerging sectors. Its negative impact on efficiency is one drawback. Additionally, they do not generate revenue for the government and provide opportunity for corruption.
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X-rays with a wavelength of 120.0 pm undergo Compton scattering.(a) Find the wavelengths of the photons scattered at angles of 30.0°C, 60.0°C, 90.0°C, 120°C, 150°C , and 180°C.
Answers
Compton scattering is a phenomenon in which X-rays interact with electrons, resulting in a change in their wavelength. The change in wavelength depends on the scattering angle and can be calculated using the Compton wavelength shift formula.
For each given scattering angle, we can substitute the values into the formula and evaluate the change in wavelength (Δλ). To find the scattered wavelength (λ'), we subtract Δλ from the initial wavelength (λ).
Using the formula Δλ = (h / (m_e * c)) * (1 - cos(θ)), where h is Planck's constant, m_e is the electron mass, c is the speed of light, and θ is the scattering angle, we can calculate the change in wavelength for each angle.
However, without the initial wavelength (λ) of the X-rays, we cannot provide the exact scattered wavelengths at the given angles. The initial wavelength is crucial in determining the scattered wavelengths. To obtain the scattered wavelengths, you would need to know the initial wavelength of the X-rays.
Therefore, without the initial wavelength, we cannot provide the specific scattered wavelengths at the given angles.
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Explain how energy that comes from the outside of the Earth system drives the flow of water on surface currents.
Answers
Answer:
The ocean and atmosphere are connected. They work together to move heat and fresh water across the globe. Wind-driven and ocean-current circulations move warm water toward the poles and colder water toward the equator. ... The majority of the thermal energy at the Earth's surface is stored in the ocean.
Explanation:
The ocean and atmosphere are connected. They work together to move heat and fresh water across the globe. Wind-driven and ocean-current circulations move warm water toward the poles and colder water toward the equator. ... The majority of the thermal energy at the Earth's surface is stored in the ocean.
A waiter walks a distance of 5m holding a tray of food that weighs 10N. How much work has the waiter done on the tray?
Answers
Answer:
0 joule of workdone
Explanation:
\( w = f \times d \times \cot( \beta ) \)
force and the displacement are perpendicular to each other so cos(90⁰) =0
Which of the following describes the correct order of energy conversions necessary to form electricity from solar panels?
Solar Heat Kinetic → Electric
Solar- Kinetic Heat → Electric
Solar 1 Heat → Electric
O Solar ->Electric
Answers
Answer:
hydrochlorine +12÷B to the power of 4 -× y reapeated zminus 2 to the power of 9
NEED HELP!!! ANSWER THESE 5 QUESTIONS FOR 25 POINTS!!!! PLEASE ANSWER!! I WILL GIVE YOU BRAINEST
1. Why would oxygen levels make a difference in athletic performance?
A.
Muscles need oxygen to function well.
B.
It is just one biometric that is studied.
C.
Oxygen is important for everyone, not just athletes.
D.
Athletes require less oxygen than those who are less active.
2. Dina has been working out for a few weeks. She wants to really focus on developing healthy habits rather than a very specific goal, like losing weight. She knows that tracking can help maintain health. What could she document that would let her see progress?
A.
She should just create a long-term goal.
B.
She could note the lengths and speeds of her morning runs.
C.
She should write down what she weighs when she wakes up in the morning.
D.
She can record what days she exercises and the type of activity.
3. Alonzo thinks that it will be best if he exercises seven days a week since that will make sure that the habit sticks. Is this the BEST way to get into healthy habits that stick?
A.
Yes, the more exercise the better.
B.
No, he needs to plan some days of rest.
C.
Yes, high achievement takes a lot of commitment.
D.
No, he does not have the same schedule every day.
4. Tracking your exercise can help you stick with an exercise routine.
A.
True
B.
False
5. Ezra has a hard time sticking with exercise routines. He does well for a few weeks, but then tends to slack off a bit. What would be the BEST way for Ezra to motivate himself to stay on the program that he creates for himself?
A.
Build in small rewards when he achieves his goals.
B.
Recognize that the next time probably will not work well.
C.
Join an expensive gym so he is more motivated to exercise.
D.
Remind himself of his past failures to motivate him to succeed.
PLEASE NO LINKS!!! IF IT IS NOT THE ANSWER THEN I WILL REPORT
Answers
Answer:
1.A
2.D
3.B
4.A
5.A
Explanation:
Every physical activity requires a specific amount of oxygen for the human organs (heart, lungs, and muscle). Athletes must breathe efficiently to perform at their best, since a high oxygen level reduces fatigue and dizziness and promotes peak performance. Thus option 1. A, 2. D, 3. B, 4. A, 5. A is correct.
What oxygen levels make an in athletic performance?The range of 95-99% represents normal, healthy oxygen saturation levels. And can be simply measured with a fingertip pulse oximeter, a cheap, basic equipment. Your blood oxygen saturation is most likely within the typical range for active, healthy athletes (like you!).
Numerous websites that promote the purported advantages of breathed oxygen can be found by searching for “supplemental oxygen and athletes.” Almost all of them receive funding from businesses that sell oxygen.
Therefore, Because it doesn't function, more oxygen is not regarded as a performance-enhancing substance.
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Object A moves toward Object B. Object B has twice the mass of Object A but is not moving. After the impact, the objects lock together in a perfectly inelastic collision. What is the fraction of the initial Kinetic Energy that remains?
Answers
Answer:
I mean its probably a magnet so look at the fraction of the initial Kinetic Energy of magnets
Explanation:
why does deceleration lower force during a collision?
Answers
Distance affects the amount of potential energy stored within a system that consists of two bar magnets. A student placed two bar magnets on a table with like poles facing each other.
Which line on Graph 2 accurately shows the relationship between distance and the amount of potential energy stored in this system?
Answers
Answer: Line A
Explanation: Distance AFFECTS the amount. Potential Energy DOESN'T AFFECT the distance.
Line B accurately shows the relationship between distance and the amount of potential energy stored in this system.
What is meant by magnetic potential energy ?The amount of work required to rotate a magnetic dipole from its zero potential state to any desired position is known as the potential energy of the magnetic dipole in a magnetic field.
Here,
Maxwell's equations establish a relation between magnetic potential energy and electrostatic potential energy. The mechanical work of the magnetic force (really, magnetic torque) on the re-alignment of the vector of the magnetic dipole moment is what is known as the potential energy of a magnet or magnetic moment m in a magnetic field B.
The magnetic field's direction and distance have an impact on magnetic PE. A magnet's south pole can get close to its opposite pole's north pole. The two magnets are drawn together by this force. Their potential energy increases with increasing distance. It is possible for two north poles to collide.
The fields of the magnets are perfectly opposite one another. They are forced apart by a repelling force created by the field. Each one repels the other. The closer they are in this situation, the greater their potential energy will be.
Hence,
Line B accurately shows the relationship between distance and the amount of potential energy stored in this system.
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The light beam shown in the figure below makes an angle of? = 15.5° with the normal line NN' in the linseedoil. Determine the angles θ and θ'.(The refractive index for linseed oil is 1.48.)
θ = 1
°
θ' = 2
°
Answers
The angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.
To determine the angles θ and θ' in the given scenario, we can use Snell's Law, which relates the angles of incidence and refraction to the refractive indices of the media involved. Snell's Law can be stated as follows:
n₁ * sin(θ₁) = n₂ * sin(θ₂)
Where:
n₁ is the refractive index of the medium of incidence (in this case, air with a refractive index close to 1),
θ₁ is the angle of incidence,
n₂ is the refractive index of the medium of refraction (in this case, linseed oil with a refractive index of 1.48), and
θ₂ is the angle of refraction.
Let's solve for the unknown angles θ and θ' using the given information.
Given:
Angle of incidence θ = 1°
Refractive index of linseed oil n₂ = 1.48
We need to find the angle of refraction θ₂.
Using Snell's Law, we have:
n₁ * sin(θ₁) = n₂ * sin(θ₂)
Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:
sin(θ₁) = n₂ * sin(θ₂)
Plugging in the values:
sin(1°) = 1.48 * sin(θ₂)
We can now solve for θ₂:
θ₂ = arcsin(sin(1°) / 1.48)
Calculating this value, we find:
θ₂ ≈ 0.688°
Now, let's determine the angle θ'.
Given:
Angle of refraction θ₂ = 0.688°
Refractive index of linseed oil n₂ = 1.48
We need to find the angle of incidence θ'.
Using Snell's Law, we have:
n₂ * sin(θ₂) = n₁ * sin(θ')
Since the refractive index of air (n₁) is approximately 1, we can simplify the equation to:
n₂ * sin(θ₂) = sin(θ')
Plugging in the values:
1.48 * sin(0.688°) = sin(θ')
Solving for θ', we find:
θ' = arcsin(1.48 * sin(0.688°))
Calculating this value, we get:
θ' ≈ 1.988°
Therefore, the angle θ is approximately 0.688°, and the angle θ' is approximately 1.988°.
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47) The moment of inertia of a 0.98-kg bicycle wheel rotating about its center is 0.13 kg · m2. What is the radius of this wheel, assuming the weight of the spokes can be ignored?
Answers
Answer:
0.36 m
Explanation:
The moment of inertial of a wheel can be calculated as
\(I=mr^2\)Where r is the radius of the wheel and m is its mass.
Solving the equation for r, we get
\(r=\sqrt[]{\frac{I}{m}}\)So, replacing I by 0.13 kg m2 and m by 0.98 kg, we get
\(r=\sqrt[]{\frac{0.13\operatorname{kg}\cdot m^2}{0.98\operatorname{kg}}}=0.36\text{ m}\)Therefore, the radius of the wheel is 0.36 m
15 POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Answers
The scientist would look out for patterns and connections. Option D
What is data?We define data as a set of facts that we can obtain from a study. We know that scientists are always engages in some kind of study and the reason for the study is that they want to obtain the reasons for certain occurrence.
It is common that when we present a professional scientist with a data set, what first comes to mind is that we need to find the patterns that are in the data set as well as the connections.
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Who discovered natural magnet for the first time?
Answers
Explanation: Magnes found that the nails and buckle of his sandals and the tip of his staff were attracted to the rock he was standing on. He dug up the Earth to find lodestones. Lodestones contain magnetite, a natural magnetic material Fe3O4.
I'LL GIVE A BRAINLIST FOR SHOWING WORK
What is the difference in momentum between a 50 kg runner moving at 3 m/s and a 3000 kg truck moving at a speed of 1 m/s?
Answers
The momentum of the runner:
momentum = mass x velocity = 50 kg x 3 m/s = 150 kg*m/s
The momentum of the truck:
momentum = mass x velocity = 3000 kg x 1 m/s = 3000 kg*m/s
The difference in momentum between the runner and the truck:
difference in momentum = momentum of truck - momentum of runner = 3000 kgm/s - 150 kgm/s = 2850 kg*m/s
So, the difference in momentum between the 50 kg runner moving at 3 m/s and the 3000 kg truck moving at a speed of 1 m/s is 2850 kg*m/s
Why is the sun so much bigger & brighter than the other stars in the sky?
Answers
The Sun appears bigger and brighter than other stars in the sky because it is much closer to the Earth than any other star.
While the Sun is only an average-sized star, it is still much closer to us than any other star, so it appears larger and brighter in the sky.
Additionally, the Sun is also the closest star to the Earth that undergoes nuclear fusion, which is the process that produces its energy and makes it shine.
Other stars in the sky may be much larger or brighter than the Sun, but their distance from us makes them appear much smaller and dimmer.
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afootball of mass 550g is at rest on the ground the football is kicked with a force of 108 newton the footballers boot is in contact with the ball for 0.3 minute what is the kenitic
energy of the ball
Answers
If "0.3 minute" is correct, then it's 9,543,272 Joules.
If it's supposed to say "0.3 SECOND", then the KE is 2,651 Joules.
A 51.0 kg boy is standing near the edge of a raft that is floating in a lake. The boy jumps horizontally off the raft with a velocity
of 3.50 m/s. The raft moves in the opposite direciton with a velocity of -7.70 m/s. What is the mass of the raft? Ignore the
resistance caused by the water on the raft.
Answers
The boy jumps horizontally off the raft with a velocity of 3.50 m/s. The raft moves in the opposite direction with a velocity of -7.70 m/s.
What is the difference between Mass and Raft?The Department of Housing and Community Development funds the RAFT Program, which prevents homelessness (DHCD). RAFT offers low-income families who are homeless or in danger of homelessness short-term financial support. This force is 67° north of east and has a magnitude of 15 N. Find the x and y components of the raft's acceleration, ignoring any water resistance. The buoyant force on the raft is equal to the weight of the water displaced according to Archimedes' principle.
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how has the atomic model has changed over time
Answers
The most recent view of the atom is the quantum mechanical model of the atom.
How has the atomic model has changed over time?We know that the atom is smallest part of the substances that can take part ion a chemical reaction.
An atomic model is a theoretical construct that explains the properties and behavior of atoms, the basic building blocks of matter. The most widely accepted atomic model is the quantum mechanical model, which describes atoms as consisting of a nucleus of protons and neutrons, surrounded by a cloud of electrons.
The electrons occupy energy levels or orbitals, and their behavior is described by the principles of quantum mechanics. The earliest atomic model was proposed by John Dalton in the early 19th century, which was a classical mechanical model.
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Is a mirror reflective?
Answers
Answer:
A mirror is an image reflecting an object.
Explanation:
yes a mirror is reflective
A mirror is a reflector of the wave. When light waves reflect the flat surface of a mirror, the same curvature and vergence are retained, in equal but opposite direction, by these waves as by the original waves.Coating a piece of glass on one side with glistening metals can convert the glass into a mirror that mirrors light. Window glass may reflect only 8% of the light, while mirrors can display 95% of the light. The glass in a mirror is generally covered in a silver or aluminum layer. dark material is placed on the back to prevent the tearing of the metal (reacting with the air and turning dull). The other side of the glass can be a mirror or a simple glass. This can be used to make windows easily visible, but difficult to view.Answer:
Explanation:
Yes, a mirror is reflective to light. But there are electro magnetic waves of different frequency like radio wave that a mirror is not reflective.
Question 1
A STUDENT TIES A STRING AROUND A WEIGHT AND SWINGS THE WEIGHT IN A CIRCLE AROUND HER BODY. IF
THE STUDENT REPRESENTS THE SUN AND THE WEIGHT REPRESENTS EARTH, WHAT DOES THE STRING
REPRESENT?
A. GRAVITY
B. RADIATION
C. ELECTRICITY
D. MAGNETISM
Answers
Answer:
A) Gravity.
Explanation:
Earth is stuck in orbit around the sun, because of the Sun's gravitational pull. In this scenario, the string represents gravity, keeping the Earth attracted towards the sun.
Hope this helps! Feel free to give me Brainliest if you feel this helped. Have a good day and good luck with your assignment :)
The student ties a string around a weight and swings the weight in a circle around her body. If the student represents the sun and the weight represents earth, the string will represent GRAVITY then.
What is gravity?In mechanics, gravity—also known as gravitation—is the constant force of attraction that pulls all things together. It has little impact on determining the intrinsic characteristics of common stuff because it is by far the weakest known force in nature.
In contrast, it governs the formations and evolution of stars, galaxies, and the entire cosmos by its extensive and ubiquitous action, which affects the trajectories of objects in the solar system and beyond the universe. All objects on Earth experience weight, or a gravitational pull that is proportionate to their mass and is imposed by the planet's mass.
As the student represents the sun and the weight represents earth, the string will represent GRAVITY then. Hence, option (A) is correct.
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The ratio of the potential difference across a conductor to the current in the conductor is called
A) conductivity
B) resistance
C) charge
D) power
Answers
Answer:
The ratio of the potential difference across a metallic conductor to the current in the conductor is known as.
B. Resistance.
Explanation:
According to ohms law " the current passing through a conductor is directly proportional to the potential difference between the ends provided the temperature of the wire remains constant".
What is resistance ?
Resistance is a measure of the opposition to current flow in an electrical circuit
what is a resistor ?
a resistor is a n electric conductor which forms resistance to free flow of electric current, the resistance is measured in Ω
The ratio of the potential difference across the conductor to the current is called resistance
What is Resistance?It is defined as the ratio of the potential difference across the conductor to the current. The resistance is measured in Ω.
\(R = \dfrac VI\)
Where,
\(R\) - resistance
\(V\)- voltage (Potential difference)
\(I\) - current
Therefore, the ratio of the potential difference across the conductor to the current is called resistance.
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What event will produce the greatest increase in the gravitational force between the two masses?
Question 5 options:
Doubling the distance between the masses
Reducing the small mass by half
Doubling the large mass
Reducing the distance between the masses by half
Answers
Answer:
Doubling the large mass
Explanation:
Doubling the destance bewteen the masses will simply make the gravitational force weaker
same with every answer exce
Event will produce the greatest increase in the gravitational force between the two masses is Doubling the large mass.
What is force?
A force is an effect that can alter an object's motion according to physics. An object with mass can change its velocity, or accelerate, as a result of a force. An obvious way to describe force is as a push or a pull. A force is a vector quantity since it has both magnitude and direction.
Gravitational force is directly proportional to product of mass and inversely proportional to product of distance between them. So, on increasing heaver mass greatest increase in the gravitational force.
Event will produce the greatest increase in the gravitational force between the two masses is Doubling the large mass.
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An amusement park ride consists of a rotating
circular platform 12.5 m in diameter from
which 10 kg seats are suspended at the end
of 2.54 m massless chains. When the system
rotates, the chains make an angle of 24.4° with the vertical.
The acceleration of gravity is 9.8 m/s^2.
1. What is the speed of each seat? Answer in units of m/s.
2. If a child of mass 63.6 kg sits in a seat, what is
the tension in the chain (for the same angle)? Answer in units of N.
Answers
( 1) The speed of each seat is 6.73 m/s
( 2 ) The tension in the chain is 533.37 N.
What is he speed of each seat?The speed of each seat is determined by treating the system as a simple harmonic motion.
Apply the law of conservation of mechanical energy as shown below.
kinetic energy of each seat at the bottom = potential energy of each seat at the top
K.E = P.E
¹/₂mv² = mgh
v² = 2gh
v = √ ( 2gh )
where;
h is the vertical displacement of the childreng is acceleration due to gravityThe vertical displacement of the seats is calculated from the length of the chain as follows;
h = L cos (24.4)
The speed of each seat is calculated as follows;
v = √ ( 2g L cos (24.4) )
v = √ ( 2 x 9.8 x 2.54cos (24.4) )
v = 6.73 m/s
The tension in the chain is calculated by applying the formula for centripetal force as follows;
T = mv²/r
where;
m is the total mass suspended by the chain = 10 kg + 63.6 kg = 73.6 kgv is the speed of each seat = 6.73 m/sr is the radius of the platform = (12.5 m) / (2) = 6.25 mT = ( 73.6 x 6.73² ) / ( 6.25 )
T = 533.37 N
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a thundercloud whose base is 500m above the ground. The potential difference between the base of the cloud and the m ground is 200MV. A raindrop with a charge of 4.0 x 10–12C is in the region between the cloud and the ground. What is the electrical force on the raindrop? A 1.6 x 10–6N B 8.0 x 10–4N C 1.6 x 10–3N D 0.40N
Answers
Answer:
1.6×10⁻⁶ N.
Explanation:
From the question,
F = (V/r)q......................... Equation 1
Where F = Electric force on the raindrop, V = Potential difference between the base of the cloud and the ground, r = distance between the base of the cloud and the ground, q = the charge on a rain drop.
Given: V = 200MV = 200×10⁶ V, r = 500 m, q = 4.0×10⁻¹² C.
Substitute these values into equation 1
F = [(200×10⁶ )/500]×4.0×10⁻¹²
F = 1.6×10⁻⁶ N.
This question involves the concepts of potential difference and Columb's law.
The electrical force on the raindrop will be "A. 1.6 x 10⁻⁶ N".
ELECTRICAL FORCE ON THE RAINDROPAccording to Columb's Law the electrical force on the raindrop can be given by the following formula:
\(F=\frac{kq_1q_2}{r^2}\)------ equation (1)
where,
F = electrical force on the raindrop = ?k = Columb's constantq₁ = charge on cloud q₂ = charge on raindrop = 4 x 10⁻¹² Cr = disatnce between cloud and ground = 500 mNow, the potential difference between cloud and ground can be given by the following formula:
\(V=\frac{kq_1}{r}\)
substituting this value in equation (1), we get:
\(F=\frac{Vq_2}{r}\)
using values:
\(F=\frac{(2\ x\ 10^8\ V)(4\ x\ 10^{-12}\ C)}{500\ m}\)
F = 1.6 x 10⁻⁶ N
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What tools would u bring if u were lost in forest to survive?
Answers
Explanation:
two strings fire sticks water
Answer: i would bring a flashlight, cans of food , water filter, swiss army knife, rope, and a radio
Explanation:
In finding the density of a liquid, why is the method using density bottle more accurate than the one of using measusing cylinder.
Answers
In finding the density of a liquid, the method using density bottle more accurate than the one of using measuring cylinder.
How can we conclude the above statement?There are two common techniques to find the density of a liquid,
The method using density bottle.The method using measuring cylinder.In the process of density bottle,
We use a bottle is a small glass bottle having a glass stopper at its neck. The bottle can store a fixed volume of a liquid . Generally the volume of bottles is 25 ml or 50 ml.
When bottle is filled with liquid and stopper is inserted , the excess liquid rises through the hole and drains out .Thus the bottle will contain the same of liquid each time when it is filled . It is used to determine the density of a liquid.
In the process of measuring cylinder,
We use a cylinder. After knowing the mass of the cylinder, we pour 100 ml water in the cylinder and then take the mass of cylinder with water. Then we use the mass and the volume of the water to deduce the density of the water.
As we know from the formula,
Density= \(\frac{Mass}{Volume}\)
So, from the above discussion we can conclude that, A density bottle is built to have the exact volume of water hence no errors in reading the meniscus compared to a measuring cylinder.
That's why we prefer the method using density bottle more than the one of using measuring cylinder.
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