Light ray 1 strikes the smooth surface of a mirror as shown below. A horizontal line is labeled Mirror and there is one ray labeled 1 which falls on the mirror at a point and there are four rays of light labeled 2, 3, 4, and 5 which move away from same point on the mirror. Ray 2 is exactly vertical to the mirror, ray 1 is on the left of ray 2 and makes an angle of about 25 degrees with ray 2. Ray 3 is on the right of ray 2 and makes an angle of about 25 degrees with ray 2. Ray 4 is on the right of ray 3 and makes an angle of about 25 degrees with ray 3. Ray 5 is on the right of ray 4 and makes an angle of about 25 degrees with ray 4.

Which of the following is the reflected ray for ray 1?

Electroplating is a way to coat a complex metal object with a very thin (and hence inexpensive) layer of a precious metal, such as silver or gold. in essence the metal object is made the cathode of an electrolytic cell in which the precious metal cations are dissolved in aqueous solution. suppose a current of 480.ma is passed through an electroplating cell with an aqueous solution of agno3 in the cathode compartment for 46.0 seconds. calculate the mass of pure silver deposited on a metal object made into the cathode of the cell. round your answer to 3 significant digits. also, be sure your answer contains a unit symbol. ×10μ

If a spring has a k value of 100 newtons per meter and it is stretched 0.50 meters, what is the restoring force of the spring?

Imagine you are riding on a yacht in the ocean and traveling at 20 mph. you then hit a golf ball at 100 mph from the deck of the yacht. you see the ball move away from you at 100mph, while a person standing on a near by beach would observe your golf ball traveling at 120 mph (20 mph + 100 mph). now imagine you are aboard the hermes spacecraft traveling at 0.1c (1/10 the speed of light) past mars and shine a laser from the front of the ship. you would see the light traveling at c (the speed of light) away from your ship. according to einstein’s special relativity, how fast will a person on mars observe the light to be traveling? a) 0.1c (1/10 the speed of light) b) c (the speed of light) c)1.1c (c+0.1c)