A 57 g tennis ball is traveling at 45 m/s to the right, when it hits a racket. The ball reverses direction and travels at 33 m/s. The ball is in contact with the racket for 0.0085 s.

What is the magnitude of the force that was exerted on the ball?

When you see distant streetlights through smog, they look dimmer and redder than they do normally. but when you see the same streetlights through fog or falling snow, they look dimmer but not redder. use your knowledge of the interstellar medium to discuss the relative sizes of the particles in smog, fog, and snowstorms compared to the wavelength of light.

Which of the following is used to answer scientific question? a. intuitionb. opinion pollsc. experimentd. imagination

Five-gram samples of copper and iron are at room temperature. both samples receive equal amounts of energy due to heat flow. the specific heat capacity of copper is 0.09 cal/g°c, and the specific heat capacity of iron is 0.11 cal/g°c. which of the following statements is true?