4. Marcia consumes 8.4 X 106J (2000 food calories) of energy per day while maintaining a constant weight What is the average power she produces in a day?

The man of mass m1 and the woman of mass m2 are standing on opposite ends of the platform of mass m0 which moves with negligible friction and is initially at rest with s = 0. the man and woman begin to approach each other. derive an expression for the displacement s of the platform when the two meet in terms of the displacement x1 of the man relative to the platform.

If an electric circuit is not grounded it is best to reach out and touch it to provide the ground a.true or b.false

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block