Which of the following forms of electromagnetic waves is used mostly in communication?

a) x-rays

b) infrared

c) radio waves

d) gamma rays

A newspaper is tossed at an angle of 35° above the horizontal. If it has a mass of 2.2 kg and a speed of 6 m/s, what is the magnitude of the momentum in the horizontal direction? A. 7.6 kg-m/s B. 10.8 kg-m/s C. 13.2 kg-m/s D. 34.1 kg-m/s

Meteorite On October 9, 1992, a 27-pound meteorite struck a car in Peekskill, NY, creating a dent about 22 cm deep.

About how far does the Sun move on the Celestial Sphere each day? A. 1 degree B. 4 degrees C. 12 degrees D. 15 degrees E. 360 degrees

Use Newton's second law to determine how much force is being applied to an object that is traveling at a constant velocity

One Kelvin is equivalent to how much Celsius?

Metamorphic rocks may generally be distinguished from igneous rocks because

What is matter? A. matter is an element B. matter is anything that is made of atoms and that has mass C. matter is a compound D. matter is anything that is made of organic substances and is found on the earth

What is the outcome of all chemical changes when two substances are combined? A new substance forms with identical properties. The two substances release an odor. The two substances change color. A new substance forms with different properties.

Your myth: Dogs and wolfs are the same species Fact: Evidence:

Friction is a force that speeds up motion between two surfaces that are in contact