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.

No person who thinks scientifically places any faith in the predictions of astrologers. Nevertheless there are many people who rely on horoscopes provided by astrologers. Therefore

What is the answer for low-pressure zones at the equator a d in subpolar regions cause?

A resistor, an inductor, and a switch are all connected in series to an ideal battery of constant terminal voltage. what does the time constant for the circuit represent?

Three particles are moving perpendicular to a uniform magnetic field and travel on circular paths (see the drawing). They have the same mass and speed. List the particles in order of their charge magnitude, largest to smallest.

How are Newton's second and third laws of motion important to your everyday life?

Which is an example of transfroming potential energy to kinetic

Place the ball in the plastic bag, and twist the top so the ball is secure in the bag. Wrap the twisted portion with tape so it stays tight. Use the hole punch or scissors to poke a hole in the part of the bag that's above the ball.

Choose The units of 1/4πε0 are: A. N2C2 B. N • m/C C. N2 • m2/C2 D. N • m2/C2 E. m2/C2

What does a fern ultimately depend on as an energy source?

According to the Doppler Effect, which statement is true about a sound as it approaches you and then moves away. A) As the source approaches you, the sound waves are compressed so the pitch of the noise increases.