Mike walks 100 meters north, then walks 30 meters south. After this, he walks another 10 meters north. What is his magnitude of his total displacement during this walk, in meters?

Ocean currents are formed by what type of heat transfer?

An engineer is designing a new on-ramp for a highway. Because of space limitations, the on-ramp can have a radius no larger than 60 meters. The on-ramp is not banked and we assume that the vehicle will travel at a constant speed.

Explain why a moving object cannot come to a stop instantly in zero seconds

What is the final temperature when a 3.0 kg gold bar at 99 0C is dropped into 0.22 kg of water at 25oC?

Suppose for an unexplained reason a star near Earth started shrinking. At what stage is the gravitational force between Earth and the star the greatest?

What material are oil pipelines made from?

3/129 A 175-lb pole vaulter carrying a uniform 16-ft, 10-lb pole approaches the jump with a velocity v and manages to barely clear the bar set at a height of 18 ft. As he clears the bar, his velocity and that of the pole are essentially zero.

A few years ago, Serena Williams dived to hit a tennis ball right after it bounced off the ground. The ball bounced on the ground 10.3 m from the net, and after Serena hit the ball it flew over the 0.

A force of 1.25x103N is required to lift an object that is under the influence of an acceleration due to gravity of 7.86ft/sec2. What is the object's mass in kilograms?

Which of these events is an example of the Doppler shift? The amplitude of a wave on a string increases as the frequency decreases. The amplitude of sound from a tuning fork decreases due to damping.