What is the mechanical adventure of a machine with an input force of 63 pounds and an output force of 275 pounds?

What is the heat-loss rate through the slab if the ground temperature is 7 ∘c while the interior of the house is 23 ∘c?

Which condition is necessary for total internal reflection?

If the number of predators in the environment increases, what happens to the number of prey organisms?

A perpetual motion machine can never be bill because it is not possible to eliminate a. momentum b. inertia c. elasticity d. friction

What is good information for a fossil preservation?

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?