The speed of light in a vacuum is approximately 2.99 * 108 m/s, and the speed of light through a piece of glass is approximately 1.97 * 108 m/s. What is the index of refraction for the piece of glass?

Which of the following sources is likely to provide the most reliable scientific information about a new kind of motor oil? O A. A news article that explains how the motor oil is designed O B. The website of the company that sells the motor oil O c.

Select the correct answer from each drop-down menu. Brass and bronze are both A.___ of copper because copper is the B.___ component in brass and bronze. A. alloys composites variations void B. main most dense most expensive only

Besides the force due to gravity or g, what else determines the period of a pendulum? tension of the cord mass of the pendulum bob length of the cord amplitude of the swing Only gravity is important when calculating the period of a pendulum.

A mysterious rocket-propelled object of mass 45.0 kg is initially at rest in the middle of the horizontal, friction-less surface of an ice covered lake. Then a force directed east and with magnitude F (t) = (16.8 N/s) t is applied.

Water Cycle 1. True or False: The earth always has the same amount of water because it is constantly forming more water AND losing water at similar rates.

If a reaction has a rate constant of 3.7 x 10-3 s-1 at 25oC, and an activation energy of 43.6 kJ/mol, what will be the rate constant for this reaction at 75oC?

Two sounds are played for you. The first has a frequency of 196 Hz. The second has a frequency of 392 Hz. Which sound will be "higher" to your ear? A) The First B) The Second C) They will sound the same

When is an object that has been dropped from a great height through the air closest to vein in a free fall? At it's terminal velocity < - - this one?

A 0.300-kg puck, initially at rest on a horizontal, frictionless surface, is struck by a 0.200-kg puck moving initially along the x axis with a speed of 2.00 m/s. After the collision, the 0.200-kg puck has a speed of 1.00 m/s at an angle of? = 52.0

Ariella drove 40 miles to see her cousin. The trip took Ariella 2 hours. Then drove from her cousins house to a store for 30 miles. It took Ariella to hours to Ariella to arrive at the store. What was the average speed of the trip