As energy is added to a soild the atoms dash and move apart?

If you use 750 Newtons of force to accelerate an object to 3.1 m/s . What is the object's mass?

In an extrasolar planetary system containing a single planet, the parent star is measured to move about its center of mass every 24 years. Given this, what is the orbital period of the planet?

John runs for 10 mins at a uniform speed 9kn/h. At what speed should he run for the next 20mins so that theaverage speed comes to 12km/h.

If a 70-kg swimmer pushes off a pool wall with a force of 250 N, at what rate will the swimmer accelerate from the wall

A block with a volume of 12 cm3 has a density of 3 g/cm3. The block is cut into two pieces. One piece has a volume of 8 cm3, and the other piece has a volume of 4 cm3. What are the densities of the two pieces?

A child is given an initial push on a rope swing. On the first swing, the rope swings through an arc of 12 feet. On each successive swing, the length of the arc is 80 % of the previous length.

The formulas N2 and H2O and CO2 all represent molecules which are defined as

Write an algebraic expression for the coefficient of kinetic friction for a block of mass m sliding down an incline of angle theta with respect to the horizontal with acceleration a. (type the formula out with the word (theta) for the angle.

Tracy scuffs her socked feet across a carpet. When she touches a doorknob, she gets a small shock. How did Tracy become charged?

An object is thrown vertically upward with an initial velocity of 50 m/s. Find a) the maximum height reached by the object. b) the time taken to reach this height. (neglect the effect of air resistance).