6 The diagram below shows an inclined plane (in red) that movers use to raise heavy objects against the force of gravity and into a truck.

Which of the following is true about the simple machine shown in red?
A.
It reduces the weight of objects being carried into the truck.
B.
It shortens the distance needed to carry objects into the truck.
C.
It reduces the amount of energy needed to carry objects into the truck.
D.
It reduces the size of the force needed to carry objects into the truck.

Fill in the blank. the number of each type of element in the compound (other than 1) is represented by a small number to the right of the element symbol.

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)

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?