70.5

13. Determine the frequency of a microwave 6.0 cm in length. (A microwave is an

electromagnetic wave. It travels through space at a speed of 3.0 x 10^8 m/s)

Why don't lights turn green for both north and south bound traffic?

Isthere an outward force in circular motion

Juan lives 100 m away from Bill. What is Juan's averege speed if he reaches Bill's home in 50 s?

Which of the following statements cannot be supported by Kepler's laws of planetary motion? The distance of a planet around the sun changes throughout its orbit. The speed a planet is moving around the sun changes throughout the year.

Star #1 is approaching the Earth with speed v. Star #2 is receding from the Earth with the same speed v. Measurements of the same spectral line from each of the stars show Doppler shifts in frequency.

What are two possible uses of genetic engineering

How many joules are expended by a 70 kg man climbing up 6m of stairway? How much work is done if the climbing takes place on the surface of the moon? (Assume that the acceleration due to gravity on the moon's surface is 1.6 m/s2

A baseball flying through the air has kinetic energy because of its motion. true or false?

How many poles does Jupiter's magnetosphere have? a. 2 c. 8 b. 4 d. 9

Which describes nuclear fusion? The nuclei of two atoms combine to form a larger nucleus. The nucleus of one atom splits to form two smaller nuclei. The electrons of two atoms combine to form a cluster of electrons.