A brick is released with no initial speed from the roof of a building and strikes the ground in 1.80 s, encountering no appreciable air drag. how tall, in meters, is the building?

What is the best explanation of work? A. Work occurs when a force acts on an object. B. Work occurs when force acts to hold an object in place. C. Work occurs when energy acts on an object. D.

If you charge a pocket comb by rubbing it with a silk scarf, how can you determine if the comb is positively or negatively charged?

T object]user: which of the following is not correct for an object in projectile motion on earth? a. the only force acting on the object is gravity. b. the shape of the object's path is a parabola. c.

An astronaut is on a new planet. She discovers that is she drops a space rock from 12m above the groundnut has a final velocity of 3m/s just before it strikes the planet surface. What is the acceleration due to gravity on the planet?

A box is suspended with a series of ropes as shown below. When drawing the free body diagram, the force vector arrow for the cable marked as T should be drawn:

What is the best prediction for the weather on the day after high pressure system passes

Is it possible to have motion in the absence of a net force?

There are 2 charged particles, A and B. You know that particle A is positively charged. When you place particle B next to particle A, then particle B starts moving away from particle A. What does this mean for particle B?

The speed of light is now to be defined 2.99792458x10^8 m/s express the speed of light to three significant figures five significant figures seven significant figures

An element that is a very reactive gas is most likely a member of what group?