Physics, 12.07.2019 18:20 ellietalbot
a particle with an initial velocity of 50 m slows at a constant acceleration to 20 ms-1 over a distance of 105 m. how long does it take for the particle to slow down? (a) 2 s (c) 3 s (b)4 s (d)5 s
Answers: 1
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How have the competing explanations' experiments on atoms affected the development of the atomic model?
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In the circuit shown below, with each bulb holding a resistance of 60 ohms, how many amps of current are flowing? express your number as a decimal.
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Arunner is training for an upcoming marathon by running around a 100-m-diameter circular track at constant speed. let a coordinate system have its origin at the center of the circle with the x-axis pointing east and the y-axis north. the runner starts at (x, y) = (50 m, 0 m) and runs 2.5 times around the track in a clockwise direction.
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Large electric fields in cell membranes cause ions to move through the cell wall. the field strength in a typical membrane is 1.0 x 10 7 n/c. what is the magnitude of the force on a calcium ion with charge +e? what is its acceleration? is it possible for a particle with the same charge as as calcium to have a different acceleration if placed at this location? what would change the acceleration: mass of the particle? diameter of the particle?
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