When an object is solely under the influence of conservative forces, the sum of its kinetic and potential energies does not change.
a. true
b. false

On a cold day, when the air temperature is 0°c, you empty your lungs and take a deep breath, filling your lungs with 4.2 l of air. if you hold your breath until the temperature of the air in your lungs reaches 37°c, what is the volume of the air in your lungs at that point, assuming the pressure does not change?

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If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?