Physics, 13.11.2019 17:31 Ashthegreat
Aplane comes out of a power dive, turning upward in a curve whose center of curvature is 1300 m above the plane. the plane's speed is 260 m/s.
a. calculate the upward force of the seat cushion on the 100 kg pilot of the plane.
b. calculate the upward force on a 90.0 g sample of blood in the pilot's head.
Answers: 1
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The sun generates both mechanical and electromagnetic waves. which statement about those wave is true?
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An athlete swings a ball, connected to the end of a chain, in a horizontal circle. the athlete is able to rotate the ball at the rate of 8.13 rev/s when the length of the chain is 0.600 m. when he increases the length to 0.900 m, he is able to rotate the ball only 6.04 rev/s. (a) which rate of rotation gives the greater speed for the ball? 6.04 rev/s 8.13 rev/s (b) what is the centripetal acceleration of the ball at 8.13 rev/s? m/s2 (c) what is the centripetal acceleration at 6.04 rev/s? m/s2
Answers: 2
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