Atime-varying horizontal force f(t) = at 4 + bt 2 acts for 0.500 s on a 12.25-kg object, starting at time t = 1.00 s. in the si system, a has the numerical value 4.50 and b has the numerical value 8.75. (a) what are the si units of a and b? enter your answers separated by a c.
Answers: 3
Physics, 22.06.2019 05:00
Aperson stands on a platform, initially at rest, that can rotate freely without friction. the moment of inertia of the person plus the platform is ip. the person holds a spinning bicycle wheel with its axis horizontal. the wheel has moment of inertia iw and angular velocity ωw. take the ωw direction counterclockwise when viewed from above. part a what will be the angular velocity ωp of the platform if the person moves the axis of the wheel so that it points vertically upward?
Answers: 1
Physics, 22.06.2019 08:00
A0.580-kg rock is tied to the end of a string and is swung in a circle with a radius of 0.500 meters. the velocity of the rock is 4.50 m/s. what is the centripetal force acting on the rock? 15.5 n 5.22 n 69.8 n 23.5 n
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Physics, 22.06.2019 19:00
What is the gravitational attraction between a dating couple whose centers of mass are 0.630 m apart if the boy weighs 715 n and the girl weighs 465 n?
Answers: 3
Atime-varying horizontal force f(t) = at 4 + bt 2 acts for 0.500 s on a 12.25-kg object, starting at...
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