A car completes a journey in 2 hours. Its average speed over this journey was 45mph. Calculate the distance travelled by the car in miles.

What would be a clean energy replacement for the dam's hydroelectric power?

Do balance forces change the motion of an object

Which two elements have similar characteristics?

What procedure was part of Rutherford's famous scattering experiment? a. Bombarding a thin metal foil with electrons. b. Bombarding a thin gold foil with alpha particles. c. Bombarding a thin gold foil with X-rays. d.

What does Kepler's second law of planetary motion imply?

A 45.0 g golf ball moves to the right 273 km/h and strikes another ball at rest. they collide elastically and the golf ball moves to the left 91 km/h. If the other ball moves 182 km/h to the right, what is its mass?

To get an spaceship into orbit, it has to move about as fast as the speed of sound about as fast as the speed of light about 18,000 miles per hour there is no minimum speed for orbital motion

What is the role of the air spaces in insulating materials? Select all that apply. They trap heat in the spaces. They puts gaps between the particles to slow down conduction. They dissipate energy faster.

Is it true or false that wave interference only occurs with transverse waves?

There have been several proposed atomic models during the last 150 years. Which model best illustrates the Bohr model. This model suggests that an atom's electrons orbit the nucleus in fixed patterns, much like the planets orbit the Sun.