The critical angle at the boundary between a ruby and the air is 34.6º. Use this to calculate the refractive index of this ruby. Give your answer to

two decimal places.

Inputs, processes, outputs, feedback, and a goal are all involved in

Two scientists have a difference of opinion about something supernatural and they engage in a rational argument. Which of the following would we call this?

A ball is kicked at an angle, t, from horizontal. If the ball was kicked with an initial velocity of v, which statement about the motion of the ball is true?

Which sentence describes an example of sublimation?

Write a short story that describes haw matter changes from one physical state to another

What force keeps a water spider on the surface of water

A 5.0 kg object moving at 5.0 m/s. KE = mv2 times 1/2

Before designing the filter, one must understand the relationship between the output voltage of the circuit and the frequency. For a series RLC circuit, how do the impedances of the circuit elements depend on the frequency? a.

A ball rolls down an incline and off a horizontal ramp. Ignoring air resistance, what force or forces act on the ball as it moves through the air just after leaving the horizontal ramp? a). The weight of the ball acting vertically down.

How many atoms are in a sample of 1.83 moles of potassium (K) atoms? A) 3.04 * 10-24 atoms K B) 3.29 * 1023 atoms K C) 1.10 * 1024 atoms K D) 6.02 * 1023 atoms K