Which of the following does not use electromagnetic radiation? (Check all that apply)

Microwave ovens

Radios

Refrigeration unit

Plasma

Light is traveling in air at a speed of 300,000 km/s. Which substance would cause the light to refract the LEAST? A. ruby (speed of light = 170,000 km/s) B. glass (speed of light = 200,000 km/s) C. water (speed of light = 225,000 km/s) D.

An object is allowed to fall freely near the surface of an unknown planet. The object falls 72 meters from rest in 4.0 seconds. The acceleration due to gravity on that planet is

A centrifuge is a common laboratory instrument that separates components of differing densities in solution. This is accomplished by spinning a sample around in a circle with a large angular speed.

Wave interference A. is a property of light B. occurs when light and water interact C. is a property of all waves

The electric motor of a model train accelerates the train from rest to 0.740 m/s in 30.0 ms. The total mass of the train is 560 g. Find the average power delivered to the train during its acceleration.

What occurs when solar radiation bounces off a surface? texturization absorption reflection energization

Enise is riding her bike and falls to the ground. During the collision, she hits both grass and cement. Which best explains why Denise had fewer injuries to the area of her body that hit the grass?

Compare the inner core and the outer core?

Which step is part of the information of a batholith?

Describe what happens when a muscle contracts.