A 150 kg mass is on a cliff 50 m high. What is its potential energy? 9 How much work is done moving a 2.5 kg book to a shelf 3.0 m high? 10. A 150 pound man runs up a stairway 25 feet above ground level in 10 s. How much work did the man do?

What cities (more than 1) has many fronts

In 1917, after developing the concept of relativity, Einstein described how his findings supported the static universe idea, which was a widespread theory that stated that the size of the universe never changes.

Find acceleration given the following: df = 378 cm di = 0 vi = 0 t = 6 seconds a = ? Put your answer in this form: XX (cm/s) / s

Solve for x. 4.6x<-15.64

How could you increase the number of snowmen destroyed by the sled sliding down the hill? SledAQ1 A. Increase the starting height of the sled. B. Increase the mass of the sled. C. Increase the starting kinetic energy of the sled. D. All of the above.

A flashlight beam strikes the surface of a pane of glass (n = 1.50) at a 61° angle to the normal. what is the angle of refraction?

Why is there controversy to the opinion that human contribution of carbon dioxide to the atmosphere is cause warming

If the resistance of a circuit increases, that means that the current has to

One watt is equal to which of these values? 1 joule/hour 1 joule-hour 1 joule/second 1 joule-second

What are some of the benefits of learned optimism that have been found in research? O A. Fewer health problems O O B. All of these C. Making more money O D. A lower divorce rate