Which of the following include exact numbers? a) the speed of light in a vacuum is a physical constant; to the nearest m/s, it is2.99792 ×108 m/s. b) the density of mercury at 25°c is 13.53 g/ml. c) there are 3600 s in 1h. d) in 2003, the united states had 50 states.
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Physics, 22.06.2019 05:50
Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.
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Physics, 22.06.2019 16:00
In which of the following is positive work done by a person on a suitcase
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Physics, 22.06.2019 22:30
The record distance in the sport of throwing cowpats is 81.1 m. this record toss was set by steve urner of the united states in 1981. assuming the initial launch angle was 45° and neglecting air resistance, answer the following. (a) determine the initial speed of the projectile. m/s
Answers: 2
Which of the following include exact numbers? a) the speed of light in a vacuum is a physical const...
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