Physics, 11.05.2021 18:20, darlenelandaverde
With reference to Figure-1, a ball A of mass m = 1 kg rolls down a frictionless track of radius R in the vertical plane. The ball starts rolling at position-1, the highest point of the track, with zero initial velocity. At the bottom of the track (position-2) the ball hits a massless spring, of spring constant k = 1980 N/m, that is held in place by a wall. In the process, the spring compresses a maximum of 10 cm where the ball comes to a stop. Neglect the rotational motion of the ball and consider it as a particle. (a) Find the radius of the track. (b) What is the change in potential energy of the ball? (C) What is the velocity of the ball at position-2? Specify both magnitude and direction. (d) If the mass m were doubled by how much would the spring compress? Ball 1 R Wall 77000 2 Figure-1
Answers: 3
Physics, 21.06.2019 20:40, denjayjr681
If an object with an initial temperature of 300 k increases its temperature by 1°c every minute, by how many degrees fahrenheit will its temperature have increased in 10 minutes? (a) 6°f (b) 10°f (c) 18°f (d) 30°f
Answers: 3
Physics, 22.06.2019 04:50, andrewsaul04
The position of a crate sliding down a ramp is given by x=(0.05t^3) m, y=(1.7t^2) m, z=(6−0.85t^5/2) m, where t is in seconds. (a) determine the magnitude of the crate's velocity when t = 2 s. (b) determine the magnitude of the crate's acceleration when t = 2 s.
Answers: 2
Physics, 22.06.2019 11:00, zhjzjzzj6325
Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?
Answers: 3
Physics, 22.06.2019 20:30, Taylor129
Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object
Answers: 1
With reference to Figure-1, a ball A of mass m = 1 kg rolls down a frictionless track of radius R in...
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