A windmill converts the mechanical energy of wind into

energy produced by a

generator

An apple falls out of a tree fro, a height of 2.3m. What is the impact speed of the apple

What is the most widely accepted scientific explanation of the origin of the universe? A. Redshifting B. Nucleosynthesis C. The big crunch theory D. The big bang theory

Which of the following descriptions explains the process of water freezing? A) Water molecules speed up until they escape into a different phase.

A tank originally contains 100 gal of fresh water. Then water containing 1/2 lb of salt per gallon is poured into the tank at a rate of 2 gal/min, and the mixture is allowed to leave at the same rate.

The binding energy of helium - 4 is 28 MeV. a. What is the mass of a helium nucleus (round to 5 decimal places) ?

Hydroelectric power uses: wind water coal the sun

Two lightweight metal spheres are suspended near each other from insulating threads. One sphere has a net charge; the other sphere has no net charge. The spheres will: A. Attract each other B. Exert no electrostatic force on each other C.

Read the given list of organisms. squirrel, zebra, tortoise, rabbit, horse What best describes the role of these five organisms in a food web?

What are the SI units for specific heat capacity

What are starburst galaxies and what do they have to do with galaxy evolution?