The illuminance on a surface is 3.5 lux, and the surface is 2 meters from the light source. What's the intensity of the source?

Which energy transformation occurs in an operating electric motor? (1) electrical → mechanical (2) mechanical → electrical (3) chemical → electrical (4) electrical → chemical

What voltage would be required to run a 600-watt motor with a current of 400 amperes

Explain why the tip of a sewing needle is sharp

Does my stomach expand like a balloon the more I eat or drink something

If a stuntman films a scene in which he jumps off a tall building. If he was in the air for 2.00 seconds from what height did she jump?

A stone is thrown vertically up. What kind of energy did the stone have initially? What happens to this energy as the stone ascends?

What happens to the resistance of a filament if it is replaced by a shorter wire?

One group of scientists feel that global warming affects the frequency of hurricanes. Another group of scientists believe that global warming does not affect the frequency of hurricanes, but it makes the average hurricane stronger.

In an experiment, all participants receive a treatment but those in the control group recieves a false treatments

When the volume increased, what happened to the density?