## 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 2 years 1 Answer 1344 views

## Is there less gravity at the north pole?

Question
Is there less gravity at the north pole?
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General Physics 2 years 1 Answer 1998 views

## Are most collisions elastic or inelastic?

Question
Are most collisions elastic or inelastic?
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General Physics 2 years 1 Answer 1367 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 2 years 1 Answer 1030 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 2 years 1 Answer 1029 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 2 years 2 Answers 2099 views

## Why do sea waves never stop?

Question
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 2 years 1 Answer 953 views

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

Question
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 2 years 1 Answer 825 views

## Does fire respond to electromagnetism?

Question
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 2 years 0 Answers 1119 views

## What is ionization?

Question
Doesn’t it mean to electrically charge gas atoms? Aren’t electrically charged things described as “electrified”?
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General Physics 2 years 1 Answer 499 views

## Three resistors are connected. The potential difference between points A and B is 26 V.?

Question
What is the equivalent resistance between the points A and B?
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General Physics 2 years 1 Answer 325 views

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

Question
The coefficient of friction between the sole of a shoe and a tile span roof is 0.36. What minimum slope of the roof can start slipping?
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General Physics 2 years 1 Answer 587 views

## Projectile Motion and Conservation of Energy Ranking Task

Question
Six baseball throws are shown below. In each case the baseball is thrown at the same initial speed and from the same height H above the ground. Assume that the effects of air resistance are negligible. Rank these throws according to the ...
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General Physics 2 years 1 Answer 1061 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 2 years 1 Answer 718 views

## Why does my face hurt when ball hits it?

Question
Is it because of kinetic energy, momentum or pressure?
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General Physics 2 years 1 Answer 268 views

## Physics help?

Question
The position of a particle is given by x = bt – f t^3 where b and f are positive constants. x is in meters, t is in seconds. What are the units of b and f? There ...
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General Physics 2 years 1 Answer 291 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 2 years 1 Answer 546 views

## Calculate the linear acceleration (in m/s2) of a car, the 0.330 m radius tires of which have an angular acceleration of 15.0 rad/s2. Assume no slippage.

Question
1. (a) Calculate the linear acceleration (in m/s2) of a car, the 0.330 m radius tires of which have an angular acceleration of 15.0 rad/s2. Assume no slippage. 4.95 m/s2 (b) How many revolutions do the tires make in 2.50 s if they start from ...
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General Physics 2 years 1 Answer 674 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 2 years 1 Answer 1121 views

## Physics question help?

Question
Two sections of a train track are 1 mile each. They are attached to each other forming a straight line. Each track expands 1.00 ft in length under the hot sun causing the track to buckle. If each ...
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General Physics 2 years 1 Answer 346 views

## You drive 4 km at 30 km/hr and then another 4 km at 50 km/h. What is your average speed for the whole 8 km trip?

Question
You drive 4 km at 30 km/hr and then another 4 km at 50 km/h. What is your average speed for the whole 8 km trip? a.less than 40 km/h b.equal to 40 km/h c.more than 40 km/h d.none of the above
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General Physics 2 years 0 Answers 1435 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 2 years 0 Answers 956 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 2 years 0 Answers 697 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 2 years 0 Answers 1417 views

## Net Torque on a Pulley

Question
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 2 years 1 Answer 2633 views

## 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
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General Physics 2 years 0 Answers 2624 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 2 years 1 Answer 2426 views

## What is the radius of the curve?

Question
HW 5 Problem 6.49  3 of 19
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General Physics 2 years 0 Answers 2227 views

## Physics 7.18 Machine

Question
A machine part is made up of two pieces, with centers of gravity shown in the figure.(Figure 1) Which point could be the center of gravity of the entire part?
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General Physics 2 years 0 Answers 2109 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 2 years 2 Answers 2099 views

## Explain why the average power delivered to a resistor is not zero?

Question
The average current in a resistor in an ac circuit is zero. Explain why the average power delivered to a resistor is not zero.
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General Physics 2 years 1 Answer 2059 views

## Is there less gravity at the north pole?

Question
Is there less gravity at the north pole?
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General Physics 2 years 1 Answer 1998 views

## Playing in the Field

Question
Four children are playing in a field. The children form a line, holding hands. The player at the front of the line starts to spin around faster and faster, causing the others to run in circle, as shown in the ...
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General Physics 2 years 1 Answer 1950 views

## Torques on a Seesaw: A Tutorial

Question
Learning Goal: To make the connection between intuitive understanding of a seesaw and the standard formalism for torque. This problem deals with the concept of torque, the “twist” that an off-center force applies to a body that tends to make it rotate.
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General Physics 2 years 1 Answer 1882 views