A jeweler wants to authenticate if a stone brought in by a client is a real diamond. He shines a laser at the diamond with an incident angle of 42.3o. A table listing the indices of refraction in the Snell’s Law PhEt. What should the angle of refraction be?

Balloon a has charge q, and identical mass balloon b has charge 10q. you hang them from threads near each other. choose all of the statements with which you agree. check all that apply. a. a and b exert the same magnitude forces on each other. b. the force that a exerts on b is 10 times the force that b exerts on a. c. the angle between the thread supporting a and the vertical is < the angle between the thread supporting b and the vertical. d. the force that a exerts on b is 1/10 the force that b exerts on a.

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Aforce of 8,480 n is applied to a cart to accelerate it at a rate of 26.5 m/s2. what is the mass of the cart? 865 kg 320 kg 12.1 kg 3.12 kg