What three things use energy transferred by electricity?

What element is used as a source of radiation in smoke detectors?

An irrigation channel has a rectangular cross section of 1.5 ft deep x 11 ft wide on the input side. On the far end of the channel, the channel expands to 6 ft wide while maintaining the same depth.

Now she is out on a hike and comes to the left bank of a river. There is no bridge and the right bank is 10.0 mm away horizontally and 2.5 mm, vertically below.

What negatively charged particle was discovered through the study of cathode rays?

A 7 kg sled is initially at rest on a horizontal road. the sled is pulled a distance of 2.9 m by a force of 42 n applied to the sled at an angle of 30o to the horizontal. find the change in the kinetic energy of the sled.

What does the pharynx do in the respiratory system

If you are trying to loosen a stubborn screw from a piece of wood with a screwdriver and fail, should you find a screwdriver for which the handle is longer or fatter?

Causes the output work of a machine to be less than the input work

the statement, "energy can neither be created nor destroyed, but can change from one form to another," is blank. the first law of thermodynamics

Are x rays emitted during radioactive decay