Describe The energy conversions that occur when coal is formed, and then burned to produce thermal energy.

True or false materials that are poor conductors are poor insulaters

What are two benifits of using tides for energy

A flagpole is a simple device on which a flag can be raised or lowered. Which simple machine is usually part of a flag pole? A) lever B) wedge C) pulley D) inclined plane

What is the difference between the initial position and the final position of an object?

A 4.5 kg pelican is gliding due east while a small force of air resistance is acting on the bird in the opposite direction. If the net force acting on the bird is 1.2 N to the west, what is the bird's acceleration?

They are generally thought to be blank naturally occurring emotions that are present from birth

If an aircraft is loaded 90 pounds over maximum certificated gross weight and fuel (gasoline) is drained to bring the aircraft weight within limits, how much fuel should be drained?

3. Shortwave radio is broadcast between 3.50 and 29.7 MHz, To what range of wavelengths does this correspond? Why do you suppose this part of the spectrum is called shortwave radio?

How does a star's temperature change as the star ages from a main sequence star to a red giant and from a red giant to a white dwarf?

What factors in the atmosphere seem to have the greatest effect in the amount of radiation received from the sun?