A baseball travels 50 meters in 4 seconds what is the average velocity of the baseball?

What law explains a soccer ball accelerating more than a bowling ball when thrown with the same force?

Who developed the planetary model of the atom

What is meant by saying that a hypothesis must be testable?

g The electric field in a sinusoidal wave changes as E = 125 N>C2cos 311.2 * 1011 rad>s2t + 14.2 * 102 rad>m2x] (a) In what direction does the wave propagate? (b) What is the amplitude of the electric field oscillations?

Heat would best be transfered by conduction between?

Object A and B are 10m apart. Which of the following will cause the greatest increase in gravitational force between the objects? A. Increase the mass of object A. B. Increase the mass of object B. C. Increase the distance between objects A and B. D.

A large balloon is initially filled to a volume of 1.96 l at 318.44 k and a pressure of 2.89 atm. what volume of gas will the balloon contain at 1.77 atm and 336.33 k?

What would scorch marks on fabric near bullet wound indicate?

The heat added to a thermodynamic system minus the work done is equal to which of the following? A. the heat lost from the system B. the internal energy C. the total heat added to the system D. the Carnot efficiency of the system E.

How many kilometers are in 14,000 centimeters