Physics, 12.03.2020 16:25 gibsonchristian96
You throw a ball of mass 0.4 kg straight up. You observe that it takes 2.1 s to go up and down, returning to your hand. Assuming we can neglect air resistance, the time it takes to go up to the top is half the total time, 1.05 s. Note that at the top the momentum is momentarily zero, as it changes from heading upward to heading downward. (a) Use the momentum principle to determine the speed that the ball had just AFTER it left your hand.
Answers: 2
Physics, 21.06.2019 19:10, shazanah95
Athin, square metal plate measures 14 cm on each side and has emissivity of 0.60. the plate is heated to a temperature of 745°c. what is the rate at which the plate radiates energy ? the stefan-boltzmann constant is 5.67 × 10-8 w/(m2 ? k4). remember that the plate will radiate energy from both its top and bottom surfaces.
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Which of the following is not a physical property of mattera. melting pointb. heat of combustionc. viscosityd. boiling point
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Physics, 22.06.2019 21:00, andybiersack154
The velocity of a car traveling in a straight line increases from 0 meters/second to 30meters/second in 8 seconds. what is the average acceleration of the car?
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You throw a ball of mass 0.4 kg straight up. You observe that it takes 2.1 s to go up and down, retu...
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