Wo particles are separated by a certain distance. the force of gravitational interaction between them is f0. now the separation between the particles is tripled. find the new force of gravitational interaction f1.

Suppose you are carrying a ball and running at constant speed, and wish to throw the ball and catch it as it comes back down.

A large punch bowl holds 3.35 kg of lemonade (which is essentially water) at 20.0° C. A 1.62-kg ice cube at. - 10.2°. C is placed in the lemonade.

Some small aluminium rivets of total mass 170g and at 100°C are emptied into a hole in a large block of ice at 0°C a What will be the final temperature of the rivets? b How much ice will melt?

You push down on a 3 N Box for 10 minutes. How much work was done?

Students who participated in an optimism workshop: O A. had fewer episodes of depression. O B. had fewer health problems. O C. All of these O D. had fewer episodes of anxiety.

Two friends, barbara and neil, are out rollerblading. with respect to the ground, barbara is skating due south at a speed of 5.9 m/s. neil is in front of her. with respect to the ground, neil is skating due west at a speed of 1.4 m/s.

What process is used when the sun transfers light to plants A. conduction B. radiation C. convection D. all of these

Which wave characteristic has the unit hertz

A stretched spring has 5184 J of elastic potential energy and a spring constant of 16,200 N/m. What is the displacement of the spring?

A block of mass 1.3 kg is resting at the base of a frictionless ramp. A bullet of mass 50 g is traveling parallel to the ramp surface at 250 m/s. It collides with the block, enters it, and exits the other side at 100 m/s.