Physics, 12.11.2020 04:10, haleysnyder6464
An air puck of mass 0.034 kg is tied to a string and allowed to revolve in a circle of radius 1.7m on a frictionless horizontal surface. The other end of the string passes through a hole
in the center of the surface, and a mass of 2.5 kg is tied to it, as shown. The suspended mass remains in equilibrium while the puck
revolves on the surface.
1.7 m
2.5 kg
0.034 kg
What is the magnitude of the force that
maintains circular motion acting on the puck?
The acceleration due to gravity is 9.81 m/s
2
.
Answer in units of N.
Answers: 2
Physics, 22.06.2019 17:40, cravens511peeelg
The first-order reaction aβ2b+c has rate constant 0.538 sβ1. if the initial concentration of a is 0.867 mol lβ1, what is the half-life of the reaction in seconds? remember to use correct significant figures in your answer (round your answer to the nearest hundredth). do not include units in your response.
Answers: 3
Physics, 22.06.2019 21:10, ineedhelp2285
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
An air puck of mass 0.034 kg is tied to a string and allowed to revolve in a circle of radius 1.7m o...
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