Astudent stands on a bathroom scale in an elevator at rest on the 64th floor of a building. the scale reads 836 n.
a) as the elevator moves up, the scale reading increases to 935 n, then decreases back to 836 n. find the acceleration of the elevator.
b) as the elevator approaches the 74th floor, the scale reading drops as low as 782 n. what is the acceleration of the elevator?

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

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

Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h