A man performed 500 j of work moving a couch in his living room. It took him 10 seconds to move the couch. What was his power?

100w

5000w

490w

50w

A 6.00-kg box sits on a ramp that is inclined at 37.0° above the horizontal. the coefficient of kinetic friction between the box and the ramp is mk = 0.30.

State the laws of vibration of a stringed Instrument

How are volcanoes constructive vs. destructive?

Which is true energy cant be created but can disappear into nowhere or energy is able to be transferred from one into another or all moving objects including atoms have potential energy or an arrow stretched back on a bow is an example of kinetic

The resistance R of a piece of wire has thermometric properties which can be described as a linear function of temperature (T), see below: Where a and b are constants. The resistance of the wire is found to be 3.

When an object is lifted 6 meters off the ground, it gains a certain amount of potential energy. If the same object is lifted 12 meters off the ground, its potential energy is

What happens when a electron and a proton get close together?

A plane on the ground will weigh: A) more than a plane in the air B) less than a plane in the air C) the same as a plane in the air

Tsunami waves have? 1. no crests 2. no troughs 3. long wavelengths 4. short wavelengths

The distance between a charge and the source of an electric field changes from 3 mm to 6 mm. As a result of the change, the electric potential energy of the charge is A. divided by 6 B. divided by 2 C. multiplied by 2 D. multiplied by 6