Which of the following forms of electromagnetic waves is used mostly in communication?

a) x-rays

b) infrared

c) radio waves

d) gamma rays

The atomic number of a nucleus decreases during which nuclear reactions?

Resistance or opposite to a force refers to a

A large plate is fabricated from a steel alloy that has a plane strain fracture toughness of 82.4 mpa1m (75.0 ksi1in.).

It is the thermal energy transferred from a hot object to a cold object.

Technician A says that distilled or clean drinking water should be added to a battery when the electrolyte level is low. Technician B says that fresh electrolyte (solution of acid water) should be added. Which technician is correct? A.

Scientific theories have strod the test of time and will not change

An 8 kilogram bowling ball is rolling in a straight line toward you. if its momentum is 16 kg * m/s, how fast is it traveling?

Explain why a moving object can be in equilibrium

Design an investigation to compare the durability of the three different brands

The surface area of the skin of a person who is 70 inches tall and weighs w pounds can be estimated by s (w) equals=342 w superscript 0.425342w0.425 , where s is in square inches.