a 50 kg box is initially at rest. a student applies a constant horizontal force 490 N to the box for a distance of 4.5 m. what is the speed of the box at the end of this motion?( assume no energy lost due to friction.)

Which feature of a heating curve indicates a change ofn state

A30 kg weight lies on top of a massless piston of area a = 0.01 m2 the exterior air is at a (constant) p =1 atm and t = 27 c. the interior gas is 0.4 moles of (ideal) n2 and it has initial temperature 27.00 degrees c. 1. what is the initial pressure in the interior? a. 29.4 kpa b. 130.7 kpa c. 101.3 kpa the next three questions concern what happens when an amount of heat q is slowly added to the interior, raising the piston by 1 mm and raising the interior temperature to 27.40 c

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.