Suppose a large power plant generates electricity at 12.0 kv. its old transformer once converted this voltage to 365 kv. the secondary coil of this transformer is being replaced so that its output can be 760 kv for more efficient cross-country transmission on upgraded transmission lines. randomized variables v1

part (a) what is the ratio of turns in the new secondary to the number of turns in the old secondary? 33% part (b) what is the ratio of new current output to the old current output for the same power input to the transformer?

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)

What is the name of the perceived change in a sound wave’s frequency due to motion between the observer and the sound source?

Ice at 0.0∘c has a density of 917 kg/m3. a 3.00 cm3 ice cube is gently released inside a small container filled with oil and is observed to be neutrally buoyant. what is the density of the oil?