When a beam of light in air is incident at an angle of incidence ?i < 90° on a piece of glass, the angle of refraction is larger than the angle of incidence
Indicate whether the statement is true or false
FALSE
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A billiard ball traveling at 3.00 m/s collides perfectly elastically with an identical billiard ball initially at rest on the table. The initially moving billiard ball deflects 30.0°
What is the speed of the initially stationary billiard ball after the collision? A) 2.00 m/s B) 0.866 m/s C) 1.50 m/s D) 2.59 m/s E) 0.750 m/s
Briefly explain why white-dwarf supernovae are useful for measuring cosmic distances
What will be an ideal response?
A clown at the circus blows up a balloon with helium. This balloon will not float to the ceiling unless
A. the pressure of the helium inside the balloon is less than the atmospheric pressure. B. the balloon and the helium it contains weigh less than the air displaced by the balloon. C. the pressure of the helium inside the balloon is greater than the atmospheric pressure. D. the weight of the balloon is less than the weight of the air displaced by the balloon.
Whereas web usability deals with ensuring access to web-based information, web accessibility involves designing a website that all visitors can use to quickly satisfy their goals.
Answer the following statement true (T) or false (F)