An electromagnetic wave of frequency 10^21 Hz is best classified as _.

A. a gamma ray

B. a radio wave

C. Visible light

D. a microwave

Explain how scientific knowledge develops through making observations about the natural world

All states require occupational therapy assistants to be licensed.

What is the scientific notation that best represents the standard notation given. 6,840,000,000 m

If there's nothing faster than light, how did the dark get there first

A distance-time graph indicates that an object moves 100m in 4s and then remains at rest for 6s. What is the average speed of the object?

A man is sitting on a 20 m height building and his mass is 50 kg. Calculate the mechanical energy.

Which of the following correctly describes which types of waves travel through which types of mediums? A) Transverse waves travel through solids, liquids, and gases.

Niko was hiking in the mountains when he found a spring, or a place where water naturally flows out of the ground. Where did the water in the spring come from? A. It is water that was squeezed out of an igneous rock when the rock changed. B.

Is mount st. Helen still active today

When a pendulum swings if not continuously pushed it will stop eventually because some of its energy is changef into what energy