Speed of a radio wave in air

Which form of radioactive decay would you be most likely to detect if it was happening in the room next to the one you are currently in?

Which sphere forms Earth's outermost layer? Atmosphere Biosphere Cryosphere Hydrosphere

What is the mechanical advantage of a machine that exerts a force of 160 N on an object when a person exerts a force of 20 N on the machine?

Use the terms atom and element to explain what makes silver and gold different

The more you heat an object, the A. slower its temperature rises. B. more quickly its temperature rises. C. less heat is transferred to a substance. D. more energy is transferred to a substance

Explain why it's important that the alveoli is only 1 cell thick

A new cannon was being developed in a science lab. The instructor wanted to do some testing of the cannon's ability to launch objects with different masses. The instructor used tennis balls and filled them with lead, rocks, and styrofoam.

Which law is being demonstrated when a swimmer moves forward through the water?

A camcorder has a power rating of 16 watts. If the output voltage from its battery is 7 volts, what current does it use?

Electromagnetic waves with low frequencies have been used for long-distance underwater communication. These waves most likely belong to which of the following parts of the electromagnetic spectrum? A. gamma rays B. infrared waves C. radio waves D.