• ### Physics: A cylindrical tank has a tight-fitting?

A cylindrical tank has a tight-fitting piston that allows the volume of the tank to change. The tank contains 0.5m^3 of air pressure at a pressure of 2 x 10^3 Pa. The piston is slowly pushed in until the pressure of the air is increased to 2.5 x 10^5 Pa. If the temperature remains constant, what is the final value of the volume? any help would... show more
A cylindrical tank has a tight-fitting piston that allows the volume of the tank to change. The tank contains 0.5m^3 of air pressure at a pressure of 2 x 10^3 Pa. The piston is slowly pushed in until the pressure of the air is increased to 2.5 x 10^5 Pa. If the temperature remains constant, what is the final value of the volume? any help would be amazing!
1 answer · Physics · 7 years ago
• ### A 15 g bullet is fired horizontally?

a 15 g bullet is fired horizontally into a block of wood with a mass of 2.5kg and embedded in the block. Initially the block of wood hangs vertically and the impact causes the block to swing so that its center of mass rises 15 cm. Find the velocity of the bullet just before the impact. Any help would be awesome. Was given this question in a... show more
a 15 g bullet is fired horizontally into a block of wood with a mass of 2.5kg and embedded in the block. Initially the block of wood hangs vertically and the impact causes the block to swing so that its center of mass rises 15 cm. Find the velocity of the bullet just before the impact. Any help would be awesome. Was given this question in a lab, but have not learned in yet in my physics class. Looked in my book but couldn't find a good enough example.
2 answers · Physics · 7 years ago
• ### A man runs with a speed of 6m/s off a platform?

A man runs with a speed of 6m/s off a platform that is 10 m above the water. How fast is he moving when he hits the water, ignore air resistance. Any help would be amazing!
A man runs with a speed of 6m/s off a platform that is 10 m above the water. How fast is he moving when he hits the water, ignore air resistance. Any help would be amazing!
1 answer · Physics · 7 years ago
• ### A 2kg rock is release from rest at a height of 29m?

A 2kg rock is release from rest at a height of 29m. Ignore air resistance and determine the kinetic energy, gravitational potential energy and total mechanic energy of each of the following heights: 20 m; 15 m; 5 m; 9m. Any help would be amazing
A 2kg rock is release from rest at a height of 29m. Ignore air resistance and determine the kinetic energy, gravitational potential energy and total mechanic energy of each of the following heights: 20 m; 15 m; 5 m; 9m. Any help would be amazing
2 answers · Physics · 7 years ago
• ### Physics: When a ball at rest is dropped?

When a ball at rest is dropped, can it rebound to a greater height then it's original height? Any help would be awesome, recieved this question in a lab but have no idea how to answer to to the lack of information.
When a ball at rest is dropped, can it rebound to a greater height then it's original height? Any help would be awesome, recieved this question in a lab but have no idea how to answer to to the lack of information.
3 answers · Physics · 7 years ago
• ### Physics : torques: explain how it is?

Explain how it is possible for a large force to produce a small torque and how it is possible for a small force to produce a large torque? any help would be great!
Explain how it is possible for a large force to produce a small torque and how it is possible for a small force to produce a large torque? any help would be great!
3 answers · Physics · 7 years ago
• ### Physics: Atwood's machine lab question?

An unknown mass is place on one side of the Atwood's machine. The downward acceleration of the mass 5 kg is observed to be exactly one-half of the acceleration due to gravity. Noting that the tension in the cord is the same on each side of the pulley, determine the tension force and unknown mass. Any help would be amazing!
An unknown mass is place on one side of the Atwood's machine. The downward acceleration of the mass 5 kg is observed to be exactly one-half of the acceleration due to gravity. Noting that the tension in the cord is the same on each side of the pulley, determine the tension force and unknown mass. Any help would be amazing!
1 answer · Physics · 7 years ago
• ### A student throws a ball vertically downward from the top of a building?

A student throws a ball vertically downward from the top of a building. The ball leaves the thrower's hand with a speed of 10 m/s. (a) What is its speed after falling for 1s? 2s? 3s? (b) How far does it fall in 1s? 2s? 3s? (c) What is the magnitude of its velocity after falling 10m? Any help on this would be greatly appreciated.
A student throws a ball vertically downward from the top of a building. The ball leaves the thrower's hand with a speed of 10 m/s. (a) What is its speed after falling for 1s? 2s? 3s? (b) How far does it fall in 1s? 2s? 3s? (c) What is the magnitude of its velocity after falling 10m? Any help on this would be greatly appreciated.
2 answers · Physics · 7 years ago
• ### A ball is dropped from the roof of a building?

A ball is dropped from the roof of a building. The ball strikes the ground after 6 seconds. (a) How tall, in meters is the building? (b) What is the magnitude of the ball's velocity just before it reaches the ground? I'm having continuing trouble trying to figure out these equations when not much is provided. I'm not sure what... show more
A ball is dropped from the roof of a building. The ball strikes the ground after 6 seconds. (a) How tall, in meters is the building? (b) What is the magnitude of the ball's velocity just before it reaches the ground? I'm having continuing trouble trying to figure out these equations when not much is provided. I'm not sure what equation would be best fitting for this. Any help would be amazing.
6 answers · Physics · 7 years ago
• ### A car has a constant acceleration?

A car has a constant acceleration of a=2 m/s^2. At a certain instant, its speed is 5 m/s. What is its speed 2 seconds later and 2 seconds earlier? What is its average speed during the time interval of 4 seconds? Having lots of trouble with this question, how am I suppose to calculate the acceleration at certain moments? any help would be awesome.
A car has a constant acceleration of a=2 m/s^2. At a certain instant, its speed is 5 m/s. What is its speed 2 seconds later and 2 seconds earlier? What is its average speed during the time interval of 4 seconds? Having lots of trouble with this question, how am I suppose to calculate the acceleration at certain moments? any help would be awesome.
1 answer · Physics · 7 years ago
• ### A cart with a constant acceleration?

A cart has a constant acceleration of a=2m/s^2. At a certain instant its speed if 5m/s. what is it's speed 2s later and 2s earlier? What is its average speed during the time interval of 4 seconds? I'm terribly confused as to how you're just supposed to assume the answers? I'm having difficulty understanding moments of... show more
A cart has a constant acceleration of a=2m/s^2. At a certain instant its speed if 5m/s. what is it's speed 2s later and 2s earlier? What is its average speed during the time interval of 4 seconds? I'm terribly confused as to how you're just supposed to assume the answers? I'm having difficulty understanding moments of acceleration in my physics class, we barely touched on the subject, any help would be much appreciated.
1 answer · Physics · 7 years ago
• ### Physics problem with a moving train?

Having lots of a trouble with acceleration in my physics class, any help would be amazing. A subway train starts from rest at a station and accelerates at a rate of 1.60 m.s^2 for 14.0 seconds. It runs at constant speed for 70.0 seconds and slows down at a rate of 3.50 m/s^2 until it stops at the next station. Find the total distance covered.
Having lots of a trouble with acceleration in my physics class, any help would be amazing. A subway train starts from rest at a station and accelerates at a rate of 1.60 m.s^2 for 14.0 seconds. It runs at constant speed for 70.0 seconds and slows down at a rate of 3.50 m/s^2 until it stops at the next station. Find the total distance covered.
2 answers · Physics · 7 years ago
• ### Acceleration of a typical car?

(a) Use your own knowledge (or that of a helpful friend) to estimate how long it takes a typical car to accelerate from zero to 60 mph. Then use that estimate to calculate the acceleration (in ft/s^2 and in m/s^2) of an ordinary car. (b) how far (in feet and meters) does the car travel while it accelerates, assuming that the acceleration is uniform?
(a) Use your own knowledge (or that of a helpful friend) to estimate how long it takes a typical car to accelerate from zero to 60 mph. Then use that estimate to calculate the acceleration (in ft/s^2 and in m/s^2) of an ordinary car. (b) how far (in feet and meters) does the car travel while it accelerates, assuming that the acceleration is uniform?
1 answer · Physics · 7 years ago
• ### Physics : speeding bullet?

The Beretta Model 92S (The standard issue U.S. army pistol) has a barrel 127 mm long. The bullets leave this barrel with a muzzle velocity of 335 m/s. (a) What is the acceleration of the bullet while it is in the barrel, assuming it to be constant? Express your answer in m/s^2 and g's. (b) For how long is the bullet in the... show more
The Beretta Model 92S (The standard issue U.S. army pistol) has a barrel 127 mm long. The bullets leave this barrel with a muzzle velocity of 335 m/s. (a) What is the acceleration of the bullet while it is in the barrel, assuming it to be constant? Express your answer in m/s^2 and g's. (b) For how long is the bullet in the barrel? I'm not familiar with acceleration in my physics class, and could use any help anyone is willing to offer! Thank you ahead of time
2 answers · Physics · 7 years ago
• ### Physics question with moving cars?

Having some trouble in my physics class with uniformed acceleration, any help would be greatly appreciated. A car driving on the turnpike accelerates uniformly in a straight line from 88 ft/s (60mph) to 110 ft/s (75 mph) in 3.50 seconds. (a) what is the car's acceleration? (b) How far does the car travel while it accelerates?
Having some trouble in my physics class with uniformed acceleration, any help would be greatly appreciated. A car driving on the turnpike accelerates uniformly in a straight line from 88 ft/s (60mph) to 110 ft/s (75 mph) in 3.50 seconds. (a) what is the car's acceleration? (b) How far does the car travel while it accelerates?
1 answer · Physics · 7 years ago
• ### A particle in physics?

A particle executes three consecutive displacements of 3 meters, 4 meter, and 5 meters and returns to the initial position. How are these displacements oriented?
A particle executes three consecutive displacements of 3 meters, 4 meter, and 5 meters and returns to the initial position. How are these displacements oriented?
1 answer · Physics · 7 years ago
• ### 2 vectors in physics?

Can two vectors of equal magnitude add up to give the zero resultant vector? I'm having trouble understanding vectors in physics, please help.
Can two vectors of equal magnitude add up to give the zero resultant vector? I'm having trouble understanding vectors in physics, please help.
2 answers · Physics · 7 years ago
• ### Component method in physics?

Use the component method and determine the resultant of the following three vectors (A) 100 at 30degrees (B) 50 at 45 degrees (C) 150 at 90 degrees What is the magnitude and the angle for the equilibrant vector?
Use the component method and determine the resultant of the following three vectors (A) 100 at 30degrees (B) 50 at 45 degrees (C) 150 at 90 degrees What is the magnitude and the angle for the equilibrant vector?
1 answer · Physics · 7 years ago
• ### Pendulum in physics question?

A pendulum of length L is suspended from the ceiling of an elevator. When the elevator is at rest, the period of the pendulum is T. In instant when the pendulum reaches its highest position the elevator starts to free fall. What is the period of the pendulum if the elevator is freely falling?
A pendulum of length L is suspended from the ceiling of an elevator. When the elevator is at rest, the period of the pendulum is T. In instant when the pendulum reaches its highest position the elevator starts to free fall. What is the period of the pendulum if the elevator is freely falling?
2 answers · Physics · 7 years ago
• ### Acceleration of gravity on the moon?

I'm having some trouble with one of my labs in physics. We were given a question "Astronauts on the moon set up a simple pendulum of the length 1m and measured its period to be 4.93 seconds. What is the acceleration due to gravity on the moon?" I'm confused because we were provided with a mass, not sure how to do this without it.
I'm having some trouble with one of my labs in physics. We were given a question "Astronauts on the moon set up a simple pendulum of the length 1m and measured its period to be 4.93 seconds. What is the acceleration due to gravity on the moon?" I'm confused because we were provided with a mass, not sure how to do this without it.
3 answers · Physics · 7 years ago