Why do astronauts feel weightless in space?

Which of the following scientists did not contribute significant discoveries to physical science. A. Issac Newton B. Marie Curie C. Gregor Mendel

State and explain Newton's Law of cooling.

What should you do if there is not a sharps container in the room for you to throw away a used needle?

An object moving at a constant speed of 25 m/s is making a turn with a radius of curvature of 7 m (this is the radius of the "kissing circle"). The object's momentum has a magnitude of 78 kg·m/s.

The rate constant for a certain reaction is k = 6.30*10-3 s-1. If the initial reactant concentration was 0.500 M, what will the concentration be after 19.0 minutes? Express your answer with the appropriate units.

What is always true of a single-displacement reaction?

Mrs Garcia traveled 15 km in 1 hour. What was her average velocity in km/s?

Contrast the nucleus and electron in a cloud

For saving lives, what is the most important safely feature on a car a. air bag b. safely belt c. anti-lock brakes

An 1700 kg car is moving to the right at a constant speed of 1.50 m/s. (a) what is the net force on the car