An elevator rising at a constant speed. What forces are acting on the elevaror? A: Normal and tension B: Gravity and tension C: Normal, gravity, and tension D: Gravity

The waste product of respiration is: A) oxygen b) nitrogen c) carbon d) carbon dioxide

Terrestrial biomes of the world what is the answer?

Polychlorinated biphenyls (PCBs) have been banned because they are an environmental hazard. Which of the following was NOT a reason for banning them?

A silver wire 2.6 mm in diameter transfers a charge of 420 C in 80 min. Silver contains 5.0 x 10^28 free electrons per cubic meter. (a) What is the current in the wire? (b) What is the magnitude of the drift velocity of the electrons in the wire?

Two objects with different masses and different velocities have the same momentum. What must be true of the velocity of the more massive object?

A rock is dropped at the same instant that a ball at the same height is thrown horizontally. which will will have the greater speed when it reaches the ground? ball rock both will reach at the same time impossible to answer

A cold beer initially at 35ºF warms up to 40ºF in 3 min while sitting in a room of temperature 70ºF. How warm will the beer be if left out for 20 min

What is the disadvantage of the parallax method, especially for studying distant parts of the Galaxy?

Which describes why the sun is a renewable resource? The sun creates biomass. The sun is continuously releasing energy. The sun does not cause pollution.

Which statement best describes how waves carry energy? A. Energy moves from one place to another through the wave. B. Energy increases as it moves through the wave. C. Energy is completely consumed by the beginning of the wave. D.