It takes 63 W to power a ceiling fan. The energy output of the fan is 50 W. Calculate the efficiency of the fan. Round your answer to the nearest percentage. %

What can result if an earthquake causes a sudden vertical change in the sea floor? A. a tsunami B. liquefaction C. soil creep D. sheet erosion

What are the energies associated with atomic motion called?

Which substance is uniquely a product of incomplete combustion of a fossil fuel?

Which of the following is the correct definition of nuclear energy? A. energy an object has because of its motion or position B. energy stored in chemical bonds of molecules C.

What is the speed of a wave that has a frequency of 8500 hz and a wavelength of 1.5m?

Why do you float in space

How does physical change affect the identity of a substance

A scientist pours grape juice on three identical white shirts He then uses three different cleaning products on the shirts and measures how clean they get what is the independent variable in this experiment

What part of the atom does nuclear radiation come from?

Why should scientists write reports and give oral presentations of the steps and results of their in investigations?