A ball is thrown horizontally at a speed of 24 meters per second from the top of a cliff. if the ball hits the ground 4.0 seconds later, approximately how high is the cliff?

Name the parts of an atom and their corresponding charge

Compare the gravitational force on a 33 kg mass at the surface of the Earth (with ra- dius 6.4 * 106 m and mass 6 * 1024 kg) with that on the surface of the Moon with mass 81.3 ME and radius 0.27 RE.

a wire with mass per unit length 75 g/m runs horizontally at right angles to a uniform horizontal 0.12 T magnetic field. what amount of current must flow through the wire for it to be suspended against gravity by magnetic force

A microscope that uses light and more than one lens

What is the difference between the Amoeba and Paramecium?

How are magnetic stripes near mid-ocean ridges evidence for sea-floor spreading?

If a truck has a mass of 2 x 106 grams and a velocity of 35m/s, what is its momentum? kgm/s a. 2 million b. 70 c. 57.14 d. 70,000 e. 57,100

A scientist heats a piece of iron until it is glowing white-hot. he places the metal inside a metal box. he removes all of the air from the inside of the box.

Johanna is studying what happens to the energy as a ball rolls down a ramp. What is she studying? Check all that apply. 1. gravitational potential energy 2. electrical energy 3. kinetic energy 4. mechanical energy 5. elastic potential energy

The density of sugar is 1.59 g/cm3. the mass of a sample is 4.0 g. find the volume of the sample