## Is there less gravity at the north pole?

Question
Is there less gravity at the north pole?
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General Physics 5 years 1 Answer 3228 views

## Are most collisions elastic or inelastic?

Question
Are most collisions elastic or inelastic?
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General Physics 5 years 1 Answer 2527 views

## Physics question on kinetic energy?

Question
Particle A of mass 500g is moving with a constant velocity of 12m s^-1 towards particle B of mass 1.5kg which is initially at rest. After collision, particle A comes to a rest and particle B moves ...
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General Physics 5 years 1 Answer 2024 views

## When two objects collide and some of the energy is converted to heat does that mean some of the momentum is lost?

Question
I just read that in an impact some energy can be turned into heat instead of transferring momentum. So how fast would the ice cube impact need to be for them to turn into ...
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General Physics 5 years 1 Answer 1970 views

## A boy is sliding down from a third floor window of a building. As he slides down the rope faster and faster , he becomes frightened?

Question
Then , he grabs harder on rope, increasing the tension on the rope. As soon as the upward tension in the rope becomes equal to his weight , Will the boy stop OR will the boy continues down ...
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General Physics 5 years 2 Answers 3421 views

## Why do sea waves never stop?

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Shouldn’t they stop with time? I mean go ahead and shake a bottle of water, it will shake and it will eventually stop, unless you shake it again. What makes the sea water move so much? Why doesn’t ...
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General Physics 5 years 1 Answer 1955 views

## An iron ball is dropped, it falls 153.7 m before hitting the ground…?

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A) How much time did it take to hit the ground? B) What is the velocity just before it hits the ground?
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General Physics 5 years 1 Answer 1442 views

## Does fire respond to electromagnetism?

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Fire is plasma. Plasma is ionized gas. Ionized gas is electrified gas. Electrified objects create their own electromagnetic field. So if fire is made of electrified gas, shouldn’t it respond to magnets?
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General Physics 5 years 0 Answers 1578 views

## What is ionization?

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Doesn’t it mean to electrically charge gas atoms? Aren’t electrically charged things described as “electrified”?
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General Physics 5 years 1 Answer 969 views

## Does a black hole suck things in faster the closer it gets to the center?

Question
Or is the speed things are sucked in a constant speed no matter what point you’re at in the hole (top vs singularity?) thank you in advance!
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General Physics 5 years 1 Answer 775 views

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

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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 5 years 1 Answer 668 views

## Are most collisions elastic or inelastic?

Question
Are most collisions elastic or inelastic?
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General Physics 5 years 1 Answer 2527 views

## Net Torque on a Pulley

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The figure below shows two blocks suspended by a cord over a pulley. The mass of block B is twice the mass of block A, while the mass of the pulley is equal to the mass of block A. The ...
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General Physics 5 years 1 Answer 3960 views

## A house at the bottom of a hill is fed by a full tank of water 6.0 m deep and connected to the house

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A house at the bottom of a hill is fed by a full tank of water 6.0 m deep and connected to the house by a pipe that is 75 m long at an angle of 61° from the horizontal. ...
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General Physics 5 years 1 Answer 4227 views

## Figure one show a car Avening towed at a steady speed up a slope which is inclined at 5 degree to…?

Question
Figure one show a car Evening towed at a steady speed up a slope which is inclined at 5 degree to the horizontal. Assume that the resistive forces acting on car A are negligible. car A has a mass ...
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General Physics 5 years 1 Answer 779 views

## Apollo: How realistic was the experiment dropping a hammer and feather on the moon?

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Good TV – but I always doubted the experimental usefulness. Dropped by hand, with only a TV camera for timing? I imagine a similar experiment on Earth (after Galileo) would use: Equipment to release the items Equipment ...
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General Physics 5 years 1 Answer 660 views

## 3.8 kilograms of water are changed from ice at 0˚C into liquid water at 0˚C?

Question
3.8 kilograms of water are changed (a) from ice at 0˚C into liquid water at 0˚C (b) from liquid water at 100˚C into steam at 100˚C. For each situation, determine the change in mass ...
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General Physics 5 years 1 Answer 1883 views

## Math Box: Inverse-Square Relationships

Question
Learning Goal: To understand and use inverse-square relationships. Two quantities have an inverse-square relationship if y is inversely proportional to the square of x. We write the mathematical relationship as y = A/x2. Here, A is a constant. This relationship is sometimes written as
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General Physics 5 years 1 Answer 3477 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 5 years 1 Answer 709 views

## The forces acting upon an object are not balanced, therefore one can be absolutely certain of what about the object?

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A. Object is at rest B. It is not moving C. It is moving and moving in a straight line D. It is changing its velocity E. It is moving and moving with a constant velocity F. It is accelerating
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General Physics 5 years 1 Answer 1286 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 ...
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General Physics 5 years 0 Answers 1384 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 ...
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General Physics 5 years 0 Answers 1076 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 ...
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General Physics 5 years 0 Answers 2964 views

## Algebra 2 question!?

Question
A rocket generates a net force (F) of 2,050,000 newtons, and the rocket’s mass (m) is 40,000 kilograms. Use the formula F = ma to find the acceleration (a) achieved. A. 51.25 meters/second^2 B. 51.125 meters/second^2 C. 42.25 meters/second^2
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General Physics 5 years 1 Answer 2560 views

## Are most collisions elastic or inelastic?

Question
Are most collisions elastic or inelastic?
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General Physics 5 years 1 Answer 2527 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?
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General Physics 4 years 0 Answers 2459 views

## If you’re in a diving pool 3 meters deep, why do your ears hurt if you swim to the bottom?

Question
Okay I actually know it’s the density of the water, but you wouldn’t think the pressure difference would be that great in only 3 meters, how great is the pressure difference and do you have a basic ...
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General Physics 5 years 2 Answers 2420 views

## Linear and Rotational Quantities Conceptual Question

Question
A merry-go-round is rotating at constant angular speed. Two children are riding the merry-go-round: Alan is riding at point A and Isamu is riding at point B.   A) Which child moves with greater magnitude of velocity?   B) Who moves with greater magnitude ...
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General Physics 5 years 1 Answer 2328 views

## The barrel of a rifle has a length of 0.955 m. A bullet leaves the muzzle of a rifle with a speed?

Question
The barrel of a rifle has a length of 0.955 m. A bullet leaves the muzzle of a rifle with a speed of 615 m/s. What is the acceleration of the bullet while in the barrel? A ...
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General Physics 5 years 1 Answer 2219 views

## 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.

Question
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. Determine the maximum force which can start the motion of the block.
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General Physics 5 years 1 Answer 2136 views

## Given a particle moving according to s(t)=t^2−10t+9?

Question
Find the total distance traveled during the first 8 seconds. (Hint: When is the particle traveling in the positive direction?
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General Physics 5 years 1 Answer 2111 views

## If the earth stopped spinning would a shadow clock still work? How do you know?

Question
This is a question for my 4th grade son, I would appreciate a short and clear answer.
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General Physics 5 years 1 Answer 2076 views

## Physics question on kinetic energy?

Question
Particle A of mass 500g is moving with a constant velocity of 12m s^-1 towards particle B of mass 1.5kg which is initially at rest. After collision, particle A comes to a rest and particle B moves ...
in progress 0
General Physics 5 years 1 Answer 2024 views