A 0.58-kg block sits on a lab table. The block accelerates to the right at a rate of 4.48 m/s/s There is a forward force of 3.89 N. What is the force pulling the block backwards?

Arod of some material 0.20 m long elongates 0.20 mm on heating from 21 to 120°c. determine the value of the linear coefficient of thermal expansion [in (degrees c)^-1] for this material.

The combining of light nuclei is called blank. blank as in not actually blank. you know what im tryin to say.

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.