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This question is a part of a group with common instructions. View group »

A force applied to a body is said to do "work"
1. if the body is displaced in the direction of the applied force.
2. if the body is displaced in the direction opposite to the applied force.
3. even if the body does not move.
4. only when the body is moving.
Under what conditions do real gases behave almost like ideal gases?
1. high temperature, low pressure
2. high temperature, high pressure
3. low temperature, high pressure
4. low temperature, low pressure
A 55 kg person walks up a staircase, and a second 55 kg person runs up the staircase. Who develops more power and why?
1. the person who walks up because he takes more time, using more energy
2. the person who runs up because he takes less time
3. same power for both because both cover the same distance with the same force
4. not enough information to determine

This question is a part of a group with common instructions. View group »

Weight is a measure of
2. the gravitational attraction between you and Earth.
3. mechanical equilibrium.
4. all of these.
5. none of these.
1. $1.25m/s^2$
2. $5m/s^2$
3. $6.25m/s^2$
4. $40m/s^2$