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?

The mantle in the Earth continually heats up and cools down using convection currents. a. True b. False

An initially stationary 2.3 kg object accelerates horizontally and uniformly to a speed of 8 m/s in 3.0 s. (a) In that 3.

A particle moves with uniform velocity. which of the following statements about the motion of the particle is true? A. its speed is zero B. it's acceleration is zero c. it's speed may be variable D. acceleration may be variable

Loess is an example of?

Hydroelectric energy is based on the blank energy of water being converted to blank energy as waterfalls and pushes against the turbine

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