Theories have both an explanatory and a predictive function.

a. True

b. False

It took 3.3 s for a student to move a 6.4 N chair a distance of 10.7 m. How much power did she use?

A person gives a shopping cart an initial push along a horizontal floor to get it moving, and then lets go. The cart travels forward along the floor, gradually slowing as it moves.

What would be the effect of doubling the rate of star formation, R*, on the results of the Drake equation? Drake equation: N = R * * ƒp * ne * ƒl * ƒi * ƒc * L A. There would be no difference in the results. B.

A 400 kg object is sitting at rest at the top of a hill that is 30.0m high and 80.0m long measured along the hill. If there is no friction, how fast will the object be going at the bottom of the hill?

Which type of bond shows two or more atoms sharing electrons? A. iconic B. covalent. C. Equal

An object with a mass of 10.9 kg experiences a force of 18.53 N. What is the acceleration of the object? A. 2.2 m/s2 B. 1.7 m/s2 C. 16.83 m/s2 D. 1.3 m/s2

A proton, starting from rest, accelerates through a potential difference of 1.0 kV and then moves into a magnetic field of 0.040 T at a right angle to the field. What is the radius of the proton's resulting orbit

Which of the following terms are needed to completely describe speed? Check all that apply. A. Units B. Direction C. Number D. Mass

Drivers are able to see objects ahead of them because light travels through windshields.

How are trade winds affected by the coriolis effect