The orbits of planets being elliptical was one the planetary laws developed by

A. Copernicus.

B. Ptolemy.

C. Kepler.

D. Brahe.

Consider the two vectors A (with arrow above) = 5i-3j and B (with arrow above) = - i-2j 1. Calculate A (with arrow above) + B (with arrow above) 2. Calculate A (with arrow above) - B (with arrow above) 3.

A 18.6 V battery does 1,249.0 J of work transferring charge. How much charge is transferred?

The battery charger for an mp3 player contains a step-down transformer with a turns ratio of 1:24, so that the voltage of 120 v available at a wall socket can be used to charge the battery pack or operate the player.

Near the poles, more energy is reflected back into space than is absorbed. near the poles, more energy is reflected back into space than is absorbed. a. True b. False

Which of the following shows the prefixes in order from smallest to largest? A) milli, micro, nano B) nano, micro, milli C) micro, milli, nano

How is ecology diffrent from earth science

Which theory was first proposed by Albert Einstein? A. the theory of special relativity B. the theory of universal gravitation C. the theory of inertia D. the theory of radioactivity ... the answer is A i just found out

For each of the following, describe the relationship as directly or inversely proportional: a) wavelength vs. frequency b) wavelength vs. energy c) frequency vs. energy ... ?

Can hand sanitizer be used as rubbing alcohol

Two objects experience a 12 N electrical force between them. What force will the objects experience if the distance between them is doubled?