Which astronomer proved that the planets of our solar system move in elliptical orbits? A. Kepler B. Copernicus C. Ptolemy D. Galileo

The force a magnet exerts on another magnet, on iron or a similar metal, or on moving charges is an electric force. a magnetic force. proportional to the charge of the magnet. proportional to the mass of the magnet.

The displacement of a wave traveling in the positive x-direction is y (x, t) | = (3.5 cm) cos (2.7x - 92t), where x is in m and t is in s. What are the (a) frequency, (b) wavelength, and (c) speed of this wave?

Name two objects that have a low density.

A transverse wave on a string has an amplitude a. A tiny spot on the string is colored red. As one cycle of the wave passes by

If you are told that a material is a base, what does that tell about the pH of the material?

A foot ball with a mass of 0.42kg. the aveage acceleration of the football was 14.8 m/s^2. how much force did the kicker supply to the football a. 6.22m/s^2 b. 622 N c. 35.24 m/s^2 d. 34.24 N

The deflection of air masses to the right or left (depending on latitude) as they move from one latitude to another is called the: a. Coriolis effect. b. Hadley cell. c. Saffir-Simpson scale. d. Cyclonic effect. e. Ekman spiral.

If you push against a stationary object for 10 seconds, you have performed an: a. eccentric exercise. b. isokinetic exercise. c. isometric exercise. d. isotonic exercise

Esulfur burns easily. Iron is attracted by magnets. the mineral made by sulfur and iron, but it does not burn and it is not attracted by magnets. is it a mixture? why? and why not?

What is most likely to be found in both a spinach cell and a muscle cell