Physics Mastered – Master Physics – Page 18 – Your Questions and Answer to everything Physics

What is the Average Velocity of the Ball?

Question

A tennis ball with a velocity of 11.4 m/s to the right is thrown perpendicularly at a wall. After striking the wall, the ball rebounds in the opposite direction with a velocity of -10.1 m/s to the left. If the ...

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General Physics 4 years 1 Answer 827 views

A 18.1-kg block and a 32.6-kg block are resting on a horizontal frictionless surface.

Question

A 18.1-kg block and a 32.6-kg block are resting on a horizontal frictionless surface. Between the two is squeezed a spring (spring constant = 1580 N/m). The spring is compressed by 0.160 m from its unstrained length and is not ...

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General Physics 4 years 1 Answer 975 views

A pencil sharpener takes 1.4 seconds to go from its maximum speed of 8π rad/s to rest.

Question

A pencil sharpener takes 1.4 seconds to go from its maximum speed of 8π rad/s to rest. How many rotations will the pencil sharpener make before it stops? Starting from rest. A DVD takes 0.2 seconds to get its maximum rotational ...

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General Physics 4 years 1 Answer 1184 views

How to get the average velocity if the angle, distance and time are given?

Question

Distance=2 Time=1.17 seconds Angle= 30 degrees What is the Average Velocity?

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General Physics 4 years 1 Answer 979 views

What are the first three harmonics of a note produced on a 31.0 cm long violin string if waves on this string have a speed of 274.4m/s?

Question

What are the first three harmonics of a note produced on a 31.0 cm long violin string if waves on this string have a speed of 274.4m/s?

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General Physics 4 years 1 Answer 893 views

A hunter aims directly at a target (on the same level) 140 m away. If the bullet leaves the gun at a speed of 280 m/s, by how much will the bullet miss the target?

Question

A hunter aims directly at a target (on the same level) 140 m away. If the bullet leaves the gun at a speed of 280 m/s, by how much will the bullet miss the target?

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General Physics 4 years 1 Answer 894 views

A man is laying on a board elevated by a support at the tip of the head of the board and by a scale at the foot of the board.

Question

A man is laying on a board elevated by a support at the tip of the head of the board and by a scale at the foot of the board. What would happen if a support is placed exactly at ...

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General Physics 4 years 1 Answer 1039 views

The froghopper, Philaenus spumarius, holds the world record for insect jumps.

Question

The froghopper, Philaenus spumarius, holds the world record for insect jumps. When leaping at an angle of 58.0 degrees above the horizontal, some of the tiny critters have reached a maximum height of 58.7 cm above the level ground. The ...

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General Physics 4 years 1 Answer 1142 views

In reaching her destination, a backpacker walks with an average velocity of 1.27 m/s, due west.

Question

In reaching her destination, a backpacker walks with an average velocity of 1.27 m/s, due west. This average velocity results, because she hikes for 5.89 km with an average velocity of 2.18 m/s due west, turns around, and hikes with ...

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General Physics 4 years 1 Answer 1182 views

A charge of -7 x 10-8 C exerts a force of 0.045 N on a charge of +6.0 x 10-7.

Question

A charge of -7 x 10-8 C exerts a force of 0.045 N on a charge of +6.0 x 10-7. How far apart far are the charges?

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General Physics 4 years 1 Answer 963 views

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What is the magnitude of his average velocity for the entire trip?

Question

A security guard walks 190 m in one trip around the perimeter of the building. It takes him 260

General Physics 3 years 0 Answers 3360 views

By how much is her speedometer off? in MPH

Question

Shannon decides to check the accuracy of her speedometer. She adjusts her speed to read exactly 70 mph on her speedometer and holds this ...

General Physics 3 years 0 Answers 4553 views

I’m trying to understand voltage?

Question

I have understood that voltage is how much energy is carried by the current but say you had current of 10A carrying 20V, does that mean amp of current is carrying 20V or does that mean that the ...

General Physics 4 years 0 Answers 973 views

Physics

Question

Keira starts at position x = 23 m along a coordinate axis. She then undergoes a displacement of -45 m. What is her final position?

General Physics 3 years 0 Answers 2041 views

Tactics Box 9.1 Drawing a Before-and-After Visual Overview

Question

Learning Goal: To practice Tactics Box 9.1 Drawing a before-and-after visual overview. During a collision, two objects exert forces on each other that vary in a complex way during the time of the collision. Using Newton’s second law to predict the outcome ...

General Physics 4 years 0 Answers 2572 views

Physics Torque & Force

Question

You’re carrying a 3.8-m-long, 24

General Physics 3 years 0 Answers 1597 views

What is the speed of a point on the earth’s surface located at 1/5 of the length of the arc between the equator and the pole, measured from equator? (Hint: what is the radius of the circle in which the point moves?)

Question

The earth’s radius is 6.37×106m; it rotates once every 24 hours.

General Physics 2 years 0 Answers 1097 views

If the driver applies an equal force on each side of the wheel, what is the minimum force each hand must supply?

Question

A driver holds his hands on opposite sides of the 35-cm-diameter steering wheel in a modern sports car. A torque of 4.5 N⋅m is required to turn the wheel.

General Physics 2 years 0 Answers 1146 views

Climbing

Question

A 71 kg

General Physics 1 year 0 Answers 685 views

Draw the corresponding position-versus-time graph for the velocity-versus-time graph shown in the figure. Assume that x=0m at t=0s. (Figure 1)

Question

Draw the corresponding position-versus-time graph for the velocity-versus-time graph shown in the figure. Assume that x=0mx=0m at t=0st=0s. (Figure 1)

General Physics 1 year 0 Answers 929 views

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How exactly does a newton’s cradle work?

Question

I understand that it has to do with conservation of momentum. But why is it that if you pull one ball back and drop it only the one on the end is affected. Why ...

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General Physics 4 years 1 Answer 550 views

Was this designed? or can evolution be credited? The Resilient Brain of the Arctic Ground Squirrel?

Question

AS A hibernating animal begins its sleep, its body temperature cools. Arctic ground squirrels body temperature drops to 26.8 degrees Fahrenheit. Every two or three weeks during hibernation, the arctic ground squirrel shivers itself ...

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General Physics 4 years 1 Answer 550 views

What’s the speed of dark?

Question

I have two thoughts on this. One, the speed of dark is the same as light. two, the speed of dark is infinite and we can’t observe it because it only replaces light as fast as the light ...

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General Physics 4 years 1 Answer 546 views

Why does pressure in a liquid not depend on the volume?

Question

Don’t include equations/ proofs in your answer, I want to know why does it physically/qualitatively make sense that the pressure in a liquid does not depend on the volume.

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General Physics 4 years 1 Answer 546 views

Why is it when we ride in a car with the windows opened the air hits us?

Question

I feel like it’s somewhat related to the Bernoulli’s Principle “an increase in the velocity of a stream of fluid results in a decrease in pressure” So my theory is that a car that moves with a high velocity ...

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General Physics 4 years 1 Answer 545 views

light traveling horizontally proceeds through two polarizing sheets.

Question

Unpolarized light enters the first sheet which has it’s transmission axis oriented vertically. The transmitted light falls on a second sheet which has its transmission axis set at 55 degrees with respect to the first sheet. What percentage of the ...

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General Physics 4 years 1 Answer 542 views

What happens if you compress heat?

Question

I realize it might sound pretty stupid, but I’m curious as to what would happen if you were to take a lot of heat energy and simply compress it. Would there be combustion at some point or…? ...

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General Physics 4 years 1 Answer 542 views

Why the earth s megnetic north pole is called north and not south where is actually?

Question

Because, of the compass needle is a magnet and the arrow (red color usually) is the north pole of this magnet can t be attracted from the north pole of the earth but from the south pole of ...

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General Physics 4 years 1 Answer 540 views

Can I light a bundle of string on fire with a match on my asphalt driveway?

Question

So, I have a bundle of string, and I wanna do something creative with it instead of just throwing it away. So what do I come up with? BURN IT. The question is if I can, while ...

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General Physics 4 years 1 Answer 538 views

Does a field ever finish? (physics)?

Question

I have been thinking about gravity and magnetic force, and seeing that these two forces have a field, does their field ever finish. For example, the Earth’s gravity field weakens the further you go from the Earth, but ...

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General Physics 4 years 1 Answer 524 views

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Ask Questions, Get Solutions - Master Mastering Physics

What is the Average Velocity of the Ball?

A 18.1-kg block and a 32.6-kg block are resting on a horizontal frictionless surface.

A pencil sharpener takes 1.4 seconds to go from its maximum speed of 8π rad/s to rest.

How to get the average velocity if the angle, distance and time are given?

What are the first three harmonics of a note produced on a 31.0 cm long violin string if waves on this string have a speed of 274.4m/s?

A hunter aims directly at a target (on the same level) 140 m away. If the bullet leaves the gun at a speed of 280 m/s, by how much will the bullet miss the target?

A man is laying on a board elevated by a support at the tip of the head of the board and by a scale at the foot of the board.

The froghopper, Philaenus spumarius, holds the world record for insect jumps.

In reaching her destination, a backpacker walks with an average velocity of 1.27 m/s, due west.

A charge of -7 x 10-8 C exerts a force of 0.045 N on a charge of +6.0 x 10-7.

What is the magnitude of his average velocity for the entire trip?

By how much is her speedometer off? in MPH

I’m trying to understand voltage?

Physics

Tactics Box 9.1 Drawing a Before-and-After Visual Overview

Physics Torque & Force

What is the speed of a point on the earth’s surface located at 1/5 of the length of the arc between the equator and the pole, measured from equator? (Hint: what is the radius of the circle in which the point moves?)

If the driver applies an equal force on each side of the wheel, what is the minimum force each hand must supply?

Climbing

Draw the corresponding position-versus-time graph for the velocity-versus-time graph shown in the figure. Assume that x=0m at t=0s. (Figure 1)

A charge of -7 x 10-8 C exerts a force of 0.045 N on a charge of +6.0 x 10-7.

A 1340 kg Triumph TR-8 traveling north at 43 km/hr crashes head-on into a 1850 kg Checker cab moving west at 87 km/hr.

A 60 kg package rests on the level floor of a warehouse.

The coefficient of friction between the sole of a shoe and a tile span roof is 0.36.

A 1-kg of wood is pressed against a vertical wall (µs= 0.25) by a force inclined 40º upward with respect to the vertical axis.

How exactly does a newton’s cradle work?

Was this designed? or can evolution be credited? The Resilient Brain of the Arctic Ground Squirrel?

What’s the speed of dark?

Why does pressure in a liquid not depend on the volume?

Why is it when we ride in a car with the windows opened the air hits us?

light traveling horizontally proceeds through two polarizing sheets.

What happens if you compress heat?

Why the earth s megnetic north pole is called north and not south where is actually?

Can I light a bundle of string on fire with a match on my asphalt driveway?

Does a field ever finish? (physics)?

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Ask Questions, Get Solutions - Master Mastering Physics