8 2/5 - 4 5/6

eight and two fiveths

subtracted by

four and five sixth

What is the frequency of a wave that has a wavelength of 20 cm and a speed of 10 m/s? 50 Hz 200 Hz 0.5 Hz 10 Hz

A U. S. quarter (coin) is about 3cmindiameter. If you were to hold it upso that it was covering the full Moon, how far (in cm) must you hold it away from your face so that it would pretty much cover the Moon exactly?

7. Peter found an amazing fact in an amusement park when he tried to ride the Magic Mountain Superman. Powerful magnets accelerate a car and its riders from zero to 45 m/s in 7 seconds. Suppose the mass of the car and riders is 5,600 kg.

A lemming running 2.22m/s runs off a horizontal cliff. It lands in the water 7.45m from the base of the cliff. How much time was it in the air?

Which source would provide the most reliable information about the safety of nuclear power plants?

If object A has more mass than object B, does object A contain more matter? Explain.

Describe a beach that was near stormy seas and powerful waves

We all depend on electricity. Most electricity is created by electromagnetic generators at large power plants and distributed through an electric grid.

A rock with mass m = 4.00 kg falls from rest in a viscous medium. The rock is acted on by a net constant downward force of F = 17.

On arrival at a vehicle collision, you observe a small fire in the engine compartment. A bystander is attempting to smother the fire with a jacket as you approach with an A-B-C extinguisher from your ambulance.