II Two electrons are in the vicinity of a proton. The potential energy of the
proton is
-1.6 x 10-25 J. (a) What is the potential at the proton's position? (b) If one of
the electrons is 1.0 cm from the proton, what is the distance of the second
electron from the proton?
Please explain HOW to answer this(especially part B)
Answers
There are two electrons close to a proton. The proton's potential energy is
the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors.
9.216 x 10^-8 N
q1 = 1.6 x 10^-19 C
q2 = - 1.6 x 10^-19 C
r = 5 x 10^-11 m
A source of electrostatic force is
F = k q1 q2 / r^2
F = (5 x 10-11)2 / (9 x 109 x 1.6 x 10-19 x 1.6 x 10-19)
F = 9.216 x 10^-8 N
Due to the nature of the charges being in opposition to one another, this force is appealing.
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Related Questions
a substance that turns litmus paper blue and contains hydroxide ions is most likely
Answers
Answer:
If it turns the paper blue it would have to be a base.
Explanation:
I hope that answers your question!
Answer:
If it turns the paper blue it would have to be a base.
Explanation:
I hope that answers your question!
The half-life of a radioactive isotope is 210 d. How many days would it take for the decay rate of a sample of this isotope to fall to 0.58 of its initial rate?
Answers
It would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.
1. The decay rate of a radioactive isotope is proportional to the number of radioactive atoms present in the sample at any given time.
2. The decay rate can be expressed as a function of time using the formula: R(t) = R₀ * \(e^{(-\lambda t\)), where R(t) is the decay rate at time t, R₀ is the initial decay rate, λ is the decay constant, and e is the base of the natural logarithm.
3. The half-life of a radioactive isotope is the time it takes for half of the radioactive atoms in a sample to decay. In this case, the half-life is given as 210 days.
4. Using the half-life, we can find the decay constant (λ) using the formula: λ = ln(2) / T₁/₂, where ln(2) is the natural logarithm of 2 and T₁/₂ is the half-life.
5. Substituting the given half-life into the formula, we have: λ = ln(2) / 210.
6. Now, we need to find the time it takes for the decay rate to fall to 0.58 of its initial rate. Let's call this time "t".
7. Using the formula for the decay rate, we can write: 0.58 * R₀ = R₀ * e^(-λt).
8. Simplifying the equation, we get: 0.58 = \(e^{(-\lambda t\)).
9. Taking the natural logarithm of both sides, we have: ln(0.58) = -λt.
10. Substituting the value of λ from step 5, we get: ln(0.58) = -(ln(2) / 210) * t.
11. Solving for t, we have: t = (ln(0.58) * 210) / ln(2).
12. Evaluating the expression, we find: t ≈ 546.
13. Therefore, it would take approximately 546 days for the decay rate of the sample of this radioactive isotope to fall to 0.58 of its initial rate.
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The space shuttle Copernicus is docking with an orbiting space station for refueling. Copernicus has a mass of 20,000 kg and approaches the station with a speed of 50 m/s . The space station has a mass of 80,000 kg and is floating toward the space ship with a speed of 10 m/s . How fast will Copernicus and the space station be moving after they have successfully docked? *Hint* remember that the direction of speed matters.
Answers
Copernicus and the space station will be moving at 2 m/s after they have successfully docked.
What is law of conservation of momentum?According to the law of conservation of momentum, absent an external force, the combined momentum of two or more bodies operating upon one another in an isolated system remains constant.
From law of conservation of momentum, we can write:
Total initial momentum = Total final momentum
80000 kg × (- 10 m/s) + 20000 kg × (+ 50 m/s) = (80000 kg + 20000 kg) × (v m/s)
v = 2 m/s.
Hence, Copernicus and the space station will be moving at 2 m/s after they have successfully docked.
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A Student 330 m 990m from another tall flip between the the Student stands Sound Interval beteeen cliff is cliff from of 1 st and 630 tall Hip which speed of 330 if the 330 m/s 2nd eh what is echo?
Answers
The interval between the first and second echo is 7 seconds. This means that after the initial sound wave reaches the first cliff, it takes a total of 7 seconds for the sound to travel to the second cliff and then return to the student as the second echo.
To determine the interval between the first and second echo, we need to consider the time it takes for sound to travel from the student to the first cliff, and then from the first cliff to the second cliff, and finally back to the student.
Let's break down the distances and calculate the time for each part of the journey:
Distance from the student to the first cliff: 330 meters
Time taken: t₁ = distance / speed = 330 m / 330 m/s = 1 second
Distance from the first cliff to the second cliff: 990 meters
Time taken: t₂ = distance / speed = 990 m / 330 m/s = 3 seconds
Distance from the second cliff back to the student: 990 meters
Time taken: t₃ = distance / speed = 990 m / 330 m/s = 3 seconds
Now, we can calculate the total interval between the first and second echo by adding up the individual times:
Interval between first and second echo = t₁ + t₂ + t₃ = 1 s + 3 s + 3 s = 7 seconds
Therefore, the interval between the first and second echo is 7 seconds. This means that after the initial sound wave reaches the first cliff, it takes a total of 7 seconds for the sound to travel to the second cliff and then return to the student as the second echo.
It's important to note that this calculation assumes a straight path for the sound waves and neglects factors such as air temperature and wind that can affect the speed of sound. Additionally, it assumes perfect reflection of sound waves off the cliffs, which may not be the case in real-world scenarios.
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Note the complete questions is:
A student stands 330m from a tall cliff which is 990m from another tall cliff. If the speed of sound between the cliffs is 330m/s.What is the interval between the first and second echo?
17. A ball falling from a building has a kinetic energy of 2000 J and potential
energy of 2376 J. What is the mechanical energy of the ball?
Imc
Answers
Answer:
C. 4736J
Explanation:
The mechanical energy of ball is the sum of its kinetic energy and potential energy at any point;
Mechanical energy = kinetic energy + potential energy
Given:
kinetic energy = 2000J
potential energy = 2376J
So;
Mechanical energy = 2000J + 2376J = 4736J
1. The ____ is consistent with the notion that two electrons cannot exist in the same place at the same time.
2. Hydrogen nuclei in the core of the Sun do not seem to be moving quite fast enough to overcome the electromagnetic force of repulsion, but they nevertheless can fuse together thanks to the process we call ___.
3. The location, momentum, and spin of a proton are part of what we call the proton's ____.
4. Brown dwarfs do not collapse due to ____.
5. A balloon filled with air does not collapse due to ___.
6. Knowing both the exact position and velocity of an electron simultaneously is a violation of the ___ .
7. Neutron stars do not collapse into black holes because they are supported against the crush of gravity by ____ .
Answers
The Pauli exclusion principle is consistent with the notion that two electrons cannot exist in the same place at the same time.
Hydrogen nuclei in the core of the Sun do not seem to be moving quite fast enough to overcome the electromagnetic force of repulsion, but they nevertheless can fuse together thanks to the process we call nuclear fusionThe location, momentum, and spin of a proton are part of what we call the proton's quantum state.Brown dwarfs do not collapse due to degeneracy pressure.A balloon filled with air does not collapse due to the pressure of the air inside it.Knowing both the exact position and velocity of an electron simultaneously is a violation of the Heisenberg uncertainty principle.Neutron stars do not collapse into black holes because they are supported against the crush of gravity by neutron degeneracy pressure.What of the others?The principle of Pauli exclusion, which is a foundational principle in the field of quantum mechanics, postulates that it is impossible for two fermions with half-integer spin, such as electrons, to occupy a single quantum state at the same time.
This principle aligns with the notion that it is impossible for two electrons to coexist in the same position simultaneously.
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A concrete block measuring 0.5 mx 1 mx 2 m has a mass of 2 600 kg.
b) What is the minimum and the maximum pressure it can exert on the ground?
Answers
Depending on how the block is oriented, the pressure ranges from 12 753 Pa at the minimum to 51 012 Pa at the maximum.
What was the concrete block's maximum force?The compressive strength of concrete blocks is normally in the range of 17.5 N/mm2 or 2500 psi. The blocks can withstand a force of up to 17.5 N per square millimetre before they begin to break, according to this information.
The force per unit area, which is how an item exerts pressure, can be calculated as follows:
Pressure = Force / Area
The weight of the block determines the force it produces, which is:
Force = Mass x Gravity
Where Mass is the block's mass and Gravity is its gravitational acceleration, which equals roughly 9.81 m/s².
So, the force exerted by the block is:
Force = 2 600 kg x 9.81 m/s² = 25 506 N
As a result, the block's minimal pressure on the ground is:
Minimum Pressure = Force / Area = 25 506 N / 2 m² = 12 753 Pa
The maximum pressure exerted by the block on the ground is:
Maximum Pressure = Force / Area = 25 506 N / 0.5 m² = 51 012 Pa
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The horizontal force exerted between the tires of a 500kg car and the ground is 980N. if the car starts from rest, how far will it go in 5 seconds?
Answers
Answer:
Explanation:
d = ½at²
d = ½(F/m)t²
d = ½(980/500)5²
d = 24.5 m
A vessel at rest at the origin of an xy coordinate system explodes into three pieces. Just after the explosion, one piece, of mass m, moves with velocity (-21 m/s) and a second piece, also of mass m, moves with velocity (-21 m/s) . The third piece has mass 3m. Just after the explosion, what are the (a) magnitude and (b) direction (as an angle relative to the x axis) of the velocity of the third piece
Answers
Answer:
25
Explanation:
magnitude and (b) direction (as an angle relative to the x axis) of the velocity
When Simon grows (let’s say he doubles his mass) what happens to his GPE when he is at the balcony?
Answers
Answer:
His gravitational potential energy will increase as well.
Explanation:
Let gpe represent gravitational potential energy.
gpe = mass × gravitational field strength × height
From the formula above, we can conclude that as the mass of a body increases, it's gpe increases too.
Which statement is true
Cells usually take in large food molecules
Cells can get energy by breaking down molecules from food
Cells use energy to help an organism grow and live
Breaking down molecules does not release energy
Answers
Cells usually take in large food molecules. In order to get the nutrients and energy they need, cells have to take in large molecules like carbohydrates, proteins, and fats. These molecules are too big to pass through the cell membrane, so cells have to use specialized structures like lysosomes and vacuoles to break them down into smaller molecules.
Cells can get energy by breaking down molecules from food. When cells break down molecules from food, they release energy in the form of ATP (adenosine triphosphate). This energy can be used by the cell to power its functions, such as growth and metabolism.
Cells use energy to help an organism grow and live. The energy that cells get from
breaking down molecules from food is essential for maintaining the functions of the organism. Without this energy, cells would not be able to perform essential tasks like building new tissue, repairing damaged cells, and fighting off infections.
Breaking down molecules does not release energy.
Breaking down molecules actually requires energy, not releases it. In order to break down large molecules into smaller ones, cells have to use enzymes and other specialized structures. These processes require energy in the form of ATP, which is why cells need to take in energy from food in the first place.
The average speed and kinetic energy of the particles in a gas are proportional to the measured what of the gas
Answers
Answer: Temperature
Explanation:
The average kinetic energy of the particles in a gas is proportional to the temperature of the gas. Because the mass of these particles is constant, the particles must move faster as the gas becomes warmer.
What is kinetic energy?
"The kinetic energy of an object is the energy that it possesses due to its motion."
What is average kinetic energy?
"The product of the half of the mass of each gas molecule and the square of RMS speed."
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A 2.0 cm tall object is placed 25 cm in front of a converging lens. The image is found 64 cm on the other side of the lens.
The focal length of the lens is ________.
0.011 cm
0.024 cm
41 cm
0.056 cm
18 cm
15 cm
Answers
Since focal length cannot be negative for a converging lens, we take the positive value: f ≈ 41 cm Option C
To determine the focal length of the lens, we can use the lens formula, which relates the object distance (u), image distance (v), and focal length (f) of a lens. The lens formula is given by:
1/f = 1/v - 1/u
In this case, the object distance (u) is 25 cm and the image distance (v) is 64 cm. We can substitute these values into the lens formula to solve for the focal length:
1/f = 1/v - 1/u
1/f = 1/64 cm - 1/25 cm
To simplify the equation, we can find a common denominator:
1/f = (25 - 64) / (64 * 25)
1/f = -39 / (64 * 25)
Now, we can invert both sides of the equation to solve for the focal length:
f = (64 * 25) / -39
f ≈ -41.03 cm
Since focal length cannot be negative for a converging lens, we take the positive value:
f ≈ 41 cm
Therefore, the correct answer is option C) 41 cm.
It's important to note that in the lens formula, distances are measured with respect to the lens, with positive values indicating distances on the opposite side of the incident light. The negative value obtained for the focal length indicates that the lens is a converging lens, as expected. Option C
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Can someone answer this fast please
Answers
Four canisters contain helium gas.
If all the canisters had the same amount of particles, which canister would have the fastest moving particles?
W
X
Y
Z
Answers
D. The canister with the fastest moving particle is Z due to concentration of particle.
Canister with the fastest moving particle
The speed of the particles depend on the mean distance of the particles.
The canister with the largest concentration per particle will contain particles with the greatest speed.
If the particle concentration is increasing from W to Z, then Z will have fastest moving particle.
Thus, the canister with the fastest moving particle is Z due to concentration of particle.
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Answer:
d. Z
Explanation:
If all the canisters had the same amount of particles, which canister would have the fastest moving particles?
Z
this means that the magnetic field along the central axis in the middle right between the two coils helmholtz congfiguration
Answers
The magnetic field along the central axis in the middle right between the two coils in the Helmholtz configuration is maximum and uniform.
The magnetic field is a fundamental concept in physics that refers to the region around a magnet or a moving electric charge where a force is exerted on other magnets or electric charges. Magnetic fields are created by moving charges, such as electrons, or by magnetic dipoles, which are materials with north and south poles like a bar magnet.
Magnetic fields are described mathematically by the laws of electromagnetism, which state that magnetic fields are produced by electric currents and vice versa. The strength of a magnetic field is measured in units of tesla (T) or gauss (G), depending on the system of measurement used.
Magnetic fields have many practical applications, from powering electric motors to storing data on computer hard drives. They are also an important component of the Earth's natural magnetic field, which protects the planet from harmful solar radiation.
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1. What is blackbody radiation?
A. Electromagnetic
radiation absorbed by a heated object
B. Electromagnetic
radiation emitted by a heated object with no absorbing surfaces
C. Electromagnetic radiation emitted by a heated object with perfectly absorbing and
emitting surfaces
D. Electromagnetic radiation emitted by a cooled object
Answers
Question 3 of 10
What is the primary means by which heat is transferred through fluids?
O A. Direct contact of particles
OB. Radiation
OC. Electromagnetic waves
OD. Convection currents
Answers
The primary means by which heat is transferred through fluids is convection currents (option D).
What is convection current?Convection is the transmission of heat in a fluid by the circulation of currents.
Heat can be transferred by different methods depending on the medium. Fluids like gases and liquids transfer heat through the process of convection.
Therefore, the primary means by which heat is transferred through fluids is convection currents.
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Wheel A has a radius of 0.5m and Wheel B has a radius of 0.25m. Both wheels are turning at 200 rpm
and 100 rpm (revolutions per minute) each, when we simultaneously apply a brake to them, remaining at
rest in 10s and 20s respectively. Find the frequency of each wheel. Find the initial angular velocity of
each wheel. The angular acceleration of each wheel. Find the time that both wheels will be turning with
the same angular velocity. Find the angular velocity of both wheels at the time found above. Find
for the previous time, the value of the tangential acceleration at a point located on the periphery of both wheels.
Find for the previous time the value of the centripetal acceleration at a point located on the periphery of both
wheels. When the wheels are stopped, what total angle will it have turned from the moment we apply
the breaks?
Answers
Answer:
i cant addd a comment but i need help on this to can somebody help
Explanation:
If the time for F18 to take off doubles, the acceleration will ____.
Answers
Answer:
decreases
Explanation:
a=[v-u]/t
as time increases acceleration decreases and vice versa
PLEASE HELP 20!!+BRAINLIEST
It is critical for scientists to be able to describe components of a system quantitatively. Explain why it is important to be able to describe a system quantitatively, using an example from your investigation about habitable worlds
Answers
It is important to be able to describe a system quantitatively because there exist many variables that show a continuous range of variation.
What is quantitative research?Quantitative research is any type of investigation based on scientific variables that express their values as a continuous range of variation.
For example, there are genetic traits such as height and weight that show quantitative variation, thereby they need to be expressed as ranges.
In conclusion, it is important to be able to describe a system quantitatively because there exist many variables that show a continuous range of variation.
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Why is the Falcon 9 rocket so important in today's space exploration world?
It's the first rocket to have been built by robots, saving money for labor costs.
Carbon fiber is used on the outside, making it much more lightweight, requiring less fuel to launch it.
It was invented with the ability to recharge itself by using solar panels.
It's a reusable rocket and has saved money by being reused over 60 times already.
Answers
The Falcon 9 rocket is so important in today's space exploration world because It's a reusable rocket and has saved money by being reused over 60 times already.
option D.
Why is the Falcon 9 rocket so important in today's space exploration world?The Falcon 9 rocket, is developed by SpaceX, and it holds a significant importance in today's space exploration world due to several key features and achievements, and some of the importance include the following;
ReusabilityCost-effectivenessAdvancements in rocket technologyPayload capacity and versatilityInnovation and competitionFrom the given options, we can conclude that the Falcon 9 rocket is so important in today's space exploration world because It's a reusable rocket and has saved money by being reused over 60 times already.
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2. Light traveling in air (n1=1) hits a piece of glass at an angle of 45 degrees. If the glass has a refractive index of 1.5, what angle should the light bend at?
Answers
Answer:
28.1 degrees
Explanation:
Use formula: \(N_1Sin(Angle_1) = N_2Sin(Angle_2)\)
* use angles given
A car starts from rest and uniformly acceleration to find speed of 20.0m/s in a time of 15.0 s . How far does the car travel during this time ?
Answers
Answer:
The answer is:
150 m
Explanation:
find acceleration first.
Vf = at + Vi
20 = a(15) + 0
a = 1.33m/s^2
x = 1/2at^2
x = 1/2 (1.33) (15)^2
x = 149.625m or round it to 150m
hope this helps
Answer:
1.33
Explanation:
We know
speed =distance travelled
time taken
so here distance travelled is 20.0 m/s
and time taken is 15.0s
now simplify
s=20.0/15.0
=4/3
=1.33
hope you understood it!
Forces that cancel each other are called_ forces \
Answers
Answer:
balanced forces
What is the index of refraction of a refractive medium if the angle of incidence in air is 40 degrees and the angle of refraction is 29 degrees?
Answers
Explanation: (1) sin 40 degrees = n(sin 20 degrees)
The index of refraction is 1.33.
To find the answer, we need to know about index of refraction.
What is index of refraction?
The indication of the light bending ability of a medium is the refractive index of that medium.It determines how much the path of light is bent or refracted.It's a dimensionless number.What is the mathematical expression of refractive index?
Mathematically, the refractive index(n) isn= sin∅₁ / sin∅₂
where, ∅₁= angle of incident
∅₂= angle of refraction
What is the refractive index, if the angle of incidence in air is 40 degrees and the angle of refraction is 29 degrees?
n= sin(40) /sin(24) = 1.33Thus, we can conclude that the index of refraction is 1.33.
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A science teacher asks her class to compare the way in which heat is transferred to water in a pond as opposed to soil at the edge of the pond. Which of the following investigations will help them make this comparison?
Answers
The investigation" Place soil in the bottom of a container and water on top, place it in the sun, and measure the temperature of the container" will help them make this comparison.
How to carryout this investigation?A starting point for conducting a comparative analysis is to fill a container with soil followed by pouring water on top.
The next step involves placing it under sun rays while simultaneously recording its temperature. Post that, we need to separate the sand from water to rapidly gauge any change in temperature.
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Complete question:
A science teacher asks her class to compare the way in which heat is transferred to water in a pond as opposed to the soil at the edge of the pond. Which of the following investigations will help them make this comparison?
a. Mix water and soil in a container, place it in the sun, and measure the temperature of the container.
b. Place soil and water in separate containers, place them indoors, and monitor the temperature of the containers.
c. Place soil and water in separate containers, place them in the sun, and monitor the temperatures of each container.
d. Place soil in the bottom of a container and water on top, place it in the sun, and measure the temperature of the container.
How does today's stereotyping, bias, and racial profiling intersect with religion? Are personal opinions fueled by social media outlets affecting how we understand or view religious beliefs?
Answers
Answer:
Today's stereotyping, bias, and racial profiling can intersect with religion in several ways. In many cases, individuals who are members of certain religious groups may be subject to stereotyping and prejudice based on their beliefs, dress, or appearance. This can lead to bias and discrimination in employment, housing, and other areas of life.
Racial profiling, or the use of race or ethnicity as a factor in law enforcement practices, can also intersect with religion in cases where individuals of certain religious groups are targeted for surveillance or scrutiny based on their perceived association with terrorism or other criminal activities. This can lead to a breakdown of trust between law enforcement and the affected communities, and can have negative consequences for public safety.
Personal opinions fueled by social media outlets can also affect how we understand or view religious beliefs. Social media can provide a platform for individuals to express their opinions and beliefs, but it can also perpetuate stereotypes and misinformation about certain religious groups. This can lead to polarization and divisiveness, and can contribute to a climate of fear and suspicion towards certain religious groups.
To address these issues, it's important to promote education and awareness about different religious beliefs and practices, and to work towards building inclusive and respectful communities. This can involve engaging in dialogue with individuals from different religious backgrounds, challenging stereotypes and prejudices, and advocating for policies that promote equity and justice for all.
Explanation:
brain
HI PLEASE HELP ON QUESTION ASAP USING AVERAGE (MEAN) TO ANSWER QUESTION! IF UR ANSWER AND EXPLAINATION IS CORRECT ILL RATE YOU FIVE STARS, A THANKS AND MAYBE EVEN BRAINLIEST. PLEASE MAKE SURE YOU ANSWER MY QUESTION USING AVERAGES.
1) a meal for 6 cost £12 per person. as it is one of the diners birthday , the other 5 decided to pay for his meal. how much do each of the five friends need to pay?
Answers
Each of the five friends needs to pay £12 to cover the cost of their own meals and contribute towards the birthday person's meal. Using mean allows us to distribute the cost equally among the friends, ensuring a fair division of expenses for the meal.
To determine how much each of the five friends needs to pay, we can use the concept of averages (mean) and divide the total cost by the number of people paying.
In this scenario, the total cost of the meal for 6 people is £12 per person. Since the other 5 friends have decided to pay for the birthday person's meal, they will collectively cover the cost of their own meals plus the birthday person's meal.
To calculate the total cost covered by the five friends, we can subtract the cost of one person's meal (since the birthday person's meal is being paid by the group) from the total cost. The cost of one person's meal is £12.
Total cost covered by the five friends = Total cost - Cost of one person's meal
= (£12 x 6) - £12
= £72 - £12
= £60
Now, to find out how much each of the five friends needs to pay, we divide the total cost covered by the five friends (£60) by the number of friends (5).
Amount each friend needs to pay = Total cost covered by the five friends / Number of friends
= £60 / 5
= £12
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A 2.70 kg book rests on an incline of 13.0. You give it a sharp push up the frictionless ramp. It comes to a stop in 25.25 at 17.5 m up the ramp before starting its descent(a) What is the magnitude of the normal force on the book
Answers
Answer:
the magnitude of the normal force on the book is 25.78N
Explanation:
The computation of the magnitude of the normal force on the book is shown below
Normal force = N is
= mgcosβ
= 2.70 × 9.8 × cos13°
= 25.78N
hence, the magnitude of the normal force on the book is 25.78N
The above formula should be applied