Which is the best example of potential energy?

holding a basketball in the air

rolling a ball across a flat table

flowing electric current through a wire

turning on a flashlight in a dark room

Explain fully, in your own words, why the temperature during PCR goes through cycles of 94C, 50C, 72C.

When is the next total solar eclipse in north america

What will the skydivers ke be when he land on the groun

A proton moves through a region of space where there is a magnetic field B = (0.45i + 0.38j) T and an electric field E = (3.0i - 4.2j) X 10^3 V/m. At a given instant, the proton's velocity is v = (6.0i + 3.0j - 5.0k) X 10^3m/s.

A 42 kg is lifted to a height of 9 m. What is the gravitational potential energy?

Un móvil parte del reposo y, al cabo de 5 s, alcanza una velocidad de 5 m/s; a continuación, se mantiene con esa velocidad durante 4 s, y en ese momento frena uniformemente y se detiene en 3 s.

A 2.0-kilogram mass is located 3.0 meters above the surface of Earth. What is the magnitude of Earth's gravitational field strength at this location? (1) 4.9 N/kg (3) 9.8 N/kg (2) 2.0 N/kg (4) 20. N/kg

How long did the astronauts stay on the moon?

Brenda is standing on the beach; the sea is choppy. she observes that the crests of distant waves appear not only smaller, but also closer together than do the crests of waves nearer the beach. this example illustrates a depth cue known as:

If two waves in the same space interfere completely destructively, which of the following occurs? A. The amplitude decreases. B. The amplitude increases. C. The wave speed increases. D. The wave speed decreases.