The critical angle for total internal reflection at the boundary between an unknown substance and air is 24.4°. what is the angle of refraction in the air if light is incident on the boundary at an angle of 20.0°?

if your prediction is proven incorrect you should leave out all observations that do not support your prediction or simply change your prediction

Technician A says that all FWD vehicles use adjustable front wheel bearings. Technician B says that most FWD vehicles use sealed non-adjustable front wheel bearings. Which technician is correct?

Explain why nuclear fission and nuclear fusion release large amounts of energy.

Although sunlight is unpolarized, the light that reflects from smooth surfaces may be partially polarized in the direction parallel to the plane of the reflecting surface.

Which quantity may be calculated directly using Newtons second law of motion

A 15.7-g aluminum block is warmed to 53.2 °c and plunged into an insulated beaker containing 32.5 g of water initially at 24.5 °c. the aluminum and the water are allowed to come to thermal equilibrium.

Recombination of white light can be done through glass slab

Which part of a farm system is directly improved by the use of fossil-fuel-based fertilizers? A. air quality B. water purity C. soil temperature D. nutrients and minerals

If the momentum of a 1000 kg car travelling at 10 m/s was transferred completely to a 20.0 kg traffic barrier, what would the final speed of the barrier be a. 40 m/s b. 50 m/s c. 250 m/s d. 500 m/s

2. A cannonball is fired at an angle 0 = 35° to the horizontal, with a velocity of 85 ms 1. a) What is the maximum vertical height reached by the cannonball? b) What is the maximum horizontal range of the cannonball?