Simon is riding a bike at 12 km/h away from his friend Kesha. He throws a ball at 5 km/h back to Keesha who is standing still on a sidewalk. How fast you would Kesha say the ball is traveling?

What is the equivalent resistance of a circuit that contains two 50.0 resistors connected in parallel with a 12.0 V battery? A. 100.0 B. 25.0 C. 0.040 D. 0.48

Waves combine to produce a smaller or zero-amplitude wave in a process called a. destructive interference. b. constructive interference. c. reflection. d. refraction.

The ideas, things, or events people feel are important are called a. Values b. attitude. c. Relationship d. conflicts

Consider applying Newton's second law to a man riding an elevator (perhaps to calculate his acceleration). show answer Incorrect Answer Which of the following forces must be considered? Choose all that apply.

In the television series "Cosmos" the astronomer Carl Sagan used to say, "We are all made of star stuff." What did he mean by that?

The best way to prevent heat exhaustion while exercising is to

The highest frequency radio waves are which type?

When a mass is placed on a spring with a spring constant of 15 newtons per meter, the spring is compressed 0.25 meter. How much elastic potential energy is stored in the spring?

Explain why we see the Milky Way as a faint band of light stretching across the sky.

A piece of plastic tape coated with iron oxide is magnet - ized more in some parts than in others. When the tape is moved past a small coil of wire, what happens in the coil? What is a practical application of this?