# PHYSICS HELP

If the external world does work on the system, the quantity of work is negative or positive? I said it was positive and Bob Pursley said I was right, but a Physics student said that it is negative. Please help if you can..

1. 👍 0
2. 👎 0
3. 👁 52
1. Negative

1. 👍 0
2. 👎 0

## Similar Questions

1. ### PHYSICS HELP

If the external world does work on the system, the quantity of work is negative. Is negative right or is it positive? If you are writing the system equations, the work done by external forces will be a + number, indicating an

asked by Pat on January 10, 2007
2. ### PHYSICS HELP

I am having a real problem with this question. Through the process of doing work, energy can move between the external world and the system as the result of forces or work. I say it's forces, but someone else says it's work

asked by Pat on January 10, 2007
3. ### chem

Under constant pressure, a system of gases is sealed in a cylinder and then allowed to expand. What can you conclude about the work associated with this change? A. Work is negative and is done to the system. B. Work is negative

asked by jessie on August 20, 2016
4. ### physics

The internal energy of a system changes because the system gains 180 J of heat and performs 338 J of work. In returning to its initial state, the system loses 111 J of heat. During this return process, what work is involved? If

asked by S on December 3, 2014
5. ### chemistry

Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ΔE is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The

asked by Justin on April 8, 2014
6. ### Chemistry

Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ?E is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The first

asked by Justin on April 9, 2014
7. ### chemistry

Are my answers correct? Identify each energy exchange as primarily heat or work and determine weather the sign of ΔE is positive or negative for the system. A. A rolling billiard ball collides with another billiard ball. The

asked by Justin on April 8, 2014
8. ### Chemistry I

For the methanol combustion reaction 2CH3OH(â„“) + 3O2(g) ----> 2CO2(g) + 4H2O(g) estimate the amount of P [change]V work done and tell whether the work was done on or by the system. Assume a temperature of 27â—¦C. 1. 2.5

asked by Anonymous on July 1, 2010
9. ### physics

Through the process of doing work, what allows energy to move between the external world and the system? the result of what???

asked by Annie on February 20, 2011
10. ### physics

true or false 1. The work required to stretch a spring changes linearly with the amount of strech? 2. The kinetic energy of an object increases linearly as the velocity of the object increases? 3. Kinetic energy is proportional to

asked by Chika on July 31, 2010

More Similar Questions