Worker bear pushes down on 40 kg crate of honey jars and slides it across a floor. He pushes down at a 30 degree angle with a force of 255 newtons. If the coefficient of friction is .256, what will be the acceleration of the crate.

What sort of waves exhibit the doppler effect?

An owl dives toward the ground with a constant velocity of 4.40 m/s at 53.0° below the horizontal. the sun is directly overhead and casts a shadow of the owl directly below it. what is the speed (in m/s) of its shadow on level ground?

You add 800 ml of water at 20c to 800 ml of water at 80c what is the most likely final temperature of the mixture ? a. 100c b. 60c c. 25 c d.50c