What is the total and average of 4, 6, 8, 5, 7?

Which is a fundamental force? A. Friction B. Tension C. Spring force D. Electromagnetic force

Objects become electrically charged as a result of the transfer of

For which of these would the special theory of relativity be most important? A. the space shuttle orbiting Earth B. a collision between two large trucks on a highway C. the eruption of a large volcano after many earthquakes D.

What happens during a chemical change? Mass is lost composition changes composition stays the same

A girl with a mass of 40 kg is swinging from a rope with a length of 2.5 m. What is the frequency of her swinging?

For which of the following refrigeration systems/appliances would it be permissible to use a passive recovery device for recovery of CFCs, HCFCs, and HFCs? A. A centrifugal air conditioner B. A reciprocating liquid chiller C.

The furnace keeps houseAat 25◦C, while thefurnace in houseBkeeps it at 20◦C. Which house requires heat to be supplied by its furnace at a faster rate? 1. House B requires heat at a slightly faster rate than A. 2.

An airplane begins its take-off run at A with zero velocity and a constant acceleration a. Knowing that it becomes airborne 30 s later at B with a take-off velocity of 270 km/h, determine (a) the acceleration a, (b) distance AB.

Define wave and state it types.

If a wave is traveling 100 m/s and has the wavelength of. 002, what is the frequency of the wave?