It's nighttime, and you've dropped your goggles into a swimming pool that is 3.2 m deep. if you hold a laser pointer 1.0 m above the edge of the pool, you can illuminate the goggles if the laser beam enters the water 2.5 m from the edge. how far are the goggles from the edge of the pool?
Answers: 3
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Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant
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Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyerâs 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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You throw a small rock straight up from the edge of a highway bridge that crosses a river. the rock passes you on its way down, 7.00 s after it was thrown. what is the speed of the rock just before it reaches the water 28.0 m below the point where the rock left your hand? ignore air resistance.
Answers: 2
It's nighttime, and you've dropped your goggles into a swimming pool that is 3.2 m deep. if you hold...
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