If you are at a train station and a train comes toward you, the train blows its whistle. as the train comes closer the whistle gets louder and as the train gets farther the whistle is quieter. What is this effect called?

What happens along a stationary front? a. Cold air rises over warm air. b. The flow of air is neither toward the warm air mass nor toward the cold air mass. c. Air moves so rapidly upward that hurricanes form. d. Wind stops completely.

What's a similar project to the soda and mentos project?

What conditions must be present for air to sit over a location long enough to acquire the characteristics of the land or water beneath it?

Which type of electromagnetic radiation cannot be focused? A. Gamma rays B. X-rays C. Ultraviolet D. Infrared

The Earth is a spherical object which has a translational (orbital) velocity equal to 67,000 mph and a rotational velocity of 1,040 mph. Do you think there is Magnus force acting on the Earth?

Two lab carts are pushed together with a spring mechanism compressed between them. Upon release, the 5.0 kg cart repels one way with a velocity of 0.12 m/s. The 2.0 kg cart goes the other way. At what velocity does it travel?

A bowling ball has a mass of 7.2 kg and a weight of 70.6 N. It moves down the bowling alley at 1 m/s and strikes a pin with a force of 15.0 N. What is the force that the pin exerts on the bowling ball?

an electric clothes dryer has a resictance of 16 Ohms it drawes 15 A of current what is the voltage in volts of the wall outlet that it is pluged into

A lorry with a mass of 5000kg accelerates to overtake a caravan on the motorway. Its acceleration is 1.5m/s². What force must the engine be providing? You can ignore the effects of friction and air resistance

Norma kicks a soccer ball with an initial velocity of 10.0 meters per second at an angle of 30.0% if the ball moves though the air for 3.2 seconds what's the horizontal distance traveled by the ball