Is work being done when a hiker puts on a bag

A red ball is thrown down with an initial speed of 1.1m/s from a height of 28 meters above the ground. Then 0.5 seconds after the red ball is thrown, a blue bar) is thrown upward with an initial speed of 24.

What is the wavelength of an infrared wave with a frequency of 4.2 x1014 Hz?

Which sequence shows electromagnetic waves arranged from shorter to longer wavelengths?. A. visible light, infrared radiation, microwaves, and ultraviolet rays. B. infrared radiation, Visible light, ultraviolet rays, microwaves. C.

An eagle carries a fish up 50 m into the sky using 90 n of force. how much work did the eagle do on the fish

True or False: Continuous reinforcement occurs when a response is reinforced only some of the time.

A person holds onto an object for 2 minutes, but doesn't move the object. Is work done on the object?

Which two vectors add together to give a resultant with the smallest magnitude, and which two vectors add to give a resultant with the largest magnitude? in each case specify the magnitude and direction of the resultant?

The largest velocity reached by a falling object is its

Shows a 190 g hamster sitting on an 820 g wedge-shaped block. the block, in turn, rests on a spring scale. an extra-fine lubricating oil having μs=μk=0 is sprayed on the top surface of the block, causing the hamster to slide down.

What will happen to the hydronium ion concentration and pH of the water if hydrochloric acid is added to water?