Tranmission of light signals through optical fiber

When calculating the mechanical advantage of a lever, what two pieces of information are needed? A. the mass of the object being moved and the length of the effort arm B. the length of the effort arm and the length of the resistance arm C.

Which type of mechanical wave needs a source of energy to produce it? a. a transverse wave b. a longitudinal wave c. a surface wave d. all of the above

The speed of sound in water is measured to be 1485 m/s. what is this in mph?

A battery can provide a current of 1.80 A at 2.60 V for 6.00 hr. How much energy (in kJ) is produced? A battery can provide a current of 1.80 A at 2.60 V for 6.00 hr. How much energy (in kJ) is produced?

A train travels 79 kilometers in 4 hours and then 65 kilometers in 3 hours what is it average speed

Which type of radiation has the lowest penetrating ability?

For which one of the following situations will the path length equal the magnitude of the displacement? a A ball on the end of a string is moving in a vertical circle. b A toy train is traveling around a circular track.

A poem on the body system

How many stars, approximately, are in the solar system?

The ends of a magnet where the force is strongest are magnetic