A sample of an ideal gas expands to twice its initial volume. in which type of expansion does the gas perform the least work? A) A free expansion, in which the gas expands suddenly into a vacuum

B) A slow, gradual expansion in which heat is added to the gas

C) A rapid isothermal compression of the gas to half its initial volume, followed by a slow expansion in which heat is added

The long handle on a rake is a(n) a. lever b. screw c. wedge d. inclined plane

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As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side so that they are parallel to each other. when you push the platform, you compress the springs. you do an amount of work of 79.0 j when you compress the springs a distance of 0.230 m from their uncompressed length. (a) what magnitude of force must you apply to hold the platform in this position? (b)how much additional work must you do to move the platform a distance 0.230 m farther? (c) what maximum force must you apply to move the platform a distance 0.230 m farther?