The Sun is the main source responsible for heating the surface of the Earth. Is this true or false? Give reasons to support your position.

Which of the following is an example of an object that could have a net force greater than zero acting on it? A. a glass resting on a table B. a ball rolling down a ramp C. a ladder leaning against a wall D.

Mass is the measure of inertia. what does it mean?

A car traveling at 39 m/s starts to decelerate steadily. It comes to a complete stop in 9 seconds. What is its acceleration?

Two unknown charged particles are placed a distance of (4.0x10^0) m apart and experience a force of (6.400x10^0) N. If each charge is the same, what is the magnitude of each charge?

Sheila conducts an investigation to see how the amount of salt dissolved in water affects the density of the water.

How long does it take for light from a star that is 8 light years away to reach Earth? Question 7 options: 8 earth minutes 16 earth minutes 8 earth years 16 earth years

Why does water in hot springs always remain hot? Why doesn't it's thermal energy spread out?

True or false All forces are different; each exerts a particular type of effect on a object

The Yerkes refracting telescope has a 1.00 m diameter objective lens of focal length 20.0 m. Assume it is used with an eyepiece of focal length 2.50 cm. (a) Determine the angular magnification of the planet Mars through this telescope.

A small kid sits on a bike (Anita). A bigger and stronger person (Jamy) pushing the kid so that the kid starts speeding up. (neglect friction). Mark all correct statements about the forces between them. A.