Alexander Graham Bell used an electrical wire to

a. transmit radio waves.

c. transfer power to machines.

b. build a better light bulb.

d. send voices over long distances.

Which term defines the distance from crest to crest

How does energy travel in a mechanical wave? in space in a vacuum in a medium in time I think C

You are holding a positive charge and there are positive charges of equal magnitude 1 m to your north and 1 m to your east. What is the direction of the force on the charge you are holding? A. to the eastB. to the southwestC. to the southD.

A rocket fires two engines simultaneously. One produces a thrust of 725 N directly forward, while the other gives a 513-N thrust at 32.4° above the forward direction. Find the magnitude and direction of the resultant force acting on the rocket.

What is the force of gravity between two 1000 kg cars separated by a distance of 20 m on a highway? 3. Using the force, calculated in # 2 above, and the weight of the car, calculate: Force (from #2) divided by the weight of car

Which kingdom consists only of complex multicellular, eukaryotic organisms which must consume or ingest other organisms for nutrition?

Why does heat energy always move from a higher temperature to a lower temperature?

Which of the following explains how heat flow within Earth changes its surface? Molten material moves in one direction, moving the plates in the opposite direction Molten material moves in one direction, moving the plates in the same direction

Regarding perspectives on abnormality, what is the common ground between the medical and psychoanalytic perspectives? a. Both view abnormal behaviors as symptoms of underlying problems. b.

The force in Newtons on a particle directed along the x-axis is given by F (x) = exp ( - (x/5) + 5) for x≥0 where x is in meters. The particle is constrained to move along the x-axis.