1. A 12 kg barrel is pulled up by a rope. The barrel accelerates at 1.2 m/s2. Find the force exerted by the rope. Show all your work.

Red light with a wavelength of 725 nm shines through a single slit, and forms a pattern on a screen placed 1.25 m away. If the width of the slit is 18.5 micrometers, find the width of the central maximum (a) in degrees and (b) in centimeters

If you are driving 95 km/h along a straight road and you look to the side for 2.3 s, how far do you travel during this inattentive period?

Select the correct answer. Which statement is true? OA. The speed of sound in air is inversely proportional to the temperature of the air. OB. The speed of sound in air is directly proportional to the temperature of the air. OC.

If your vehicle sinks in water, which window should you kick out when the pressure equalizes?

An inexperienced catcher catches a 126 km/h fastball of mass 160 g within 1.36 ms, whereas an experienced catcher slightly retracts his hand during the catch, extending the stopping time to 13.6 ms.

Which action is caused by gravity? a frost wedging b aeolian bands c mass wasting d glaciation

A light beam is directed parallel to the axis of a hollow cylindrical tube. When the tube contains only air, the light takes 8.72 ns to travel the length of the tube, but when the tube is filled with a transparent jelly, the light takes 1.

Neon, helium, methane, krypton, xenon, hydrogen, and ozone make up & what of the atmosphere

The element in an incandescent light bulb that releases light energy is

Would you expect a hammer and a feather to land on the surface of the moon at the same time