Which kind of light is used to carry information through optical fibers?

A 26 kg child is coasting at 2.0 m/s over flat ground in a 5.0 kg wagon. The child drops a 1.5 kg ball from the side of the wagon. What is the final speed (in m/s) of the child and wagon

An elevator is moving upward at a constant speed of 2.50 m/s. A bolt in the elevator ceiling 3.00 m above the elevator floor works loose and falls.

Formula for velocity

Oceanic electric fields produce electric currents. True False

Ahh do you think that joule's father built him a science lab echen he esa young?

Heliocentric means ... sun-centered. moon-centered. Earth-centered. galaxy-centered.

Which of the following statements are true? a. A satellite's motion is independent of its mass. b. A satellite's velocity and orbital radius are independent of each other. c. A geosynchronous satellite has a period of approximately 28 days. d.

Latent heat of vaporization refers to which changes of state? liquid to gas or gas to liquid solid to gas or gas to solid solid to liquid or gas to liquid gas to liquid or liquid to solid

In what part of the scientific method do you record data? a. Conclusion b. Experiment c. Analysis d. Hypothesis

What is the basic definition of a black hole? a. any compact mass that emits no light b. a dead star that has faded from view any object from which the escape velocity exceeds c. the speed of light any object made from dark matter d.