A 51 g sample of copper is at 26 C. If 539 J of energy are added to the copper, what is its final temperature? Assume the specific heat of copper is 387 J/kg C. Answer in units of C.

A roller coaster (310. kg) moves from A (5.00 m above the ground) to B (19.0 m above the ground). Two nonconservative forces are present: friction does -2.00 104 J of work on the car, and a chain mechanism does +3.00 104 J of work to help the car up a long climb. What is the change in the...

a 1.0 metal head of a geology hammer strikes a solid rock with a velocity of 5.0 m/s. Assuming all the energy is retained by the hammer head, how much will its temperature increase? (Chead=0.11 kcal/kg degrees C) 1/2 m v^2 = mc Deltatemp solve for deltaTemp.

Convert the complex wavefunction r*exp(-r/2)*sin(tth)*exp((+/-)i*phi) to a real wave function

If a metric ton is 1.000 103 kg, how many 76 kg people can safely occupy an elevator that can hold a maximum mass of exactly 1 metric ton?

n this sociologist's hierarchy of sciences, sociology was the "queen" and its practitioners "scientist-priests."

A ship sets out to sail to a point 120 km due north. An unexpected storm blows the ship to a point 131 km due east of its starting point. (a) How far (in km) and (b) in what direction (as an angle from due east, where north of east is a positive angle) must it now sail to reach its original...

A 54.0-kg projectile is fired at an angle of 30.0 above the horizontal with an initial speed of 116 m/s from the top of a cliff 149 m above level ground, where the ground is taken to be y = 0.

After falling from rest from a height of 35 m, a 0.45 kg ball rebounds upward, reaching a height of 25 m. If the contact between ball and ground lasted 1.8 ms, what average force was exerted on the ball?

A horse races once around a circular track in a time of 18.0 s, with a speed of 18.0 m/s. What is the radius of the track? Give your answer in meters, but do not include units.