Which information is necessary to determine an object's speed?

A.

distance and period of time

B.

distance and change in position

C.

period of time and direction

D.

distance and direction

A passenger on a Ferris wheel moves in a vertical circle at a constant speed. Are the forces on her balanced? A. Yes, the speed it constant. B. No, the direction of the net force does not change. C. No, there is an inward net force. D.

How much resistance is required to limit the current to 1.5 mA if the potential drop across the resistor is 6V

What materials are poor thermal insulators?

One way to produce a beam of polarized light with intensity i and polarization angle θ would be to pass unpolarized light with intensity i0 through a polarizer whose transmission axis is oriented such that θta=θ.

One of the consequences of the collision of two galaxies appears to be

The measure of the distance an object travels in a certain length of time is the object's

A wave is a (blank) that carries (blank) from one place to another

The movement of thermal energy from hot to cold materials is called

A jar contains 30 ml of glycerin and 60 ml of corn syrup which liquid is on the top layer

What are optical fibres