Which electromagnetic wave has wavelengths ranging from the size of a printed period to the length of a pen (1*10-3 to 1*10-1 meters) ?

An earthquake that causes a landslide under the ocean floor can trigger a

Which of the following microscope parts should routinely be adjusted to control the light source and provide optimal illumination of the specimen?

Which electromagnetic radiation can be seen with human eye?

Name and describe 4 forces that are at work in the nucleus of an atom

Two pulleys, one with a radius 2R and one with a radius of R, are welded together and can rotate about the same axis.

The national grid supplied a house with 18000000 J of energy in 1 hour. What was the average current supplied to the house in that hour? Write any equations that you use.

Claudia throws a baseball to her dog. Which free-body diagram shows the baseball when it's flying horizontally in midair? (Assume no air resistance.)

Which of the following substances will show the smallest change in temperature when equal amounts of energy are absorbed? water air sand concrete

The downward acceleration of a falling body on Earth is 9.81m/s2. On the moon the same quantity is 1.62m/s2. An astronaut in a space suit has a mass of 145kg.

Explain how a guitar produces sound by using the terms standing waves and resonance.