The drawing shows a laser beam shining on a plane mirror that is perpendicular to the floor. the angle of incidence is 33.0°. the beam emerges from the laser at a point that is 1.10 m from the mirror and 1.80 m above the floor. after reflection, how far from the base of the mirror does the beam strike the floor?

The direction of the current in an alternating current circuit remains constant. is direct. changes repeatedly. changes randomly.

Ascientist notices that an oil slick floating on water when viewed from above has many different colors reflecting off the surface, making it look rainbow-like (an effect known as iridescence). she aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). the index of refraction of water is 1.3

Two horses begin at rest. after a few seconds, horse a is traveling with a velocity of 10 m/s west, while horse b is traveling with a velocity of 13 m/s west. which horse had a greater acceleration? a. horse a because its change in velocity was greater than horse b's in the same time. b. horse b because its change in velocity was greater than horse a's in the same time. c. horse b because its change in velocity was the same as horse a's, but it took less time. d. both horses had the same acceleration.