Physics, 18.12.2019 02:31 chloesmolinski0909
An adventurous stdent stands on top of a spinning chair holding a jack-o-lantern in each hand (each of which is 5.0 kg) as she extents her arms horizontally.
she spins around, making one revolution in 2.0 s.
the moment of inertia when her arms are outstretched is 13.0 kgm, and if she brings the jack-o-lanterns in close to her stomach, the moment of inertia drops to 2.6 kgm? .
what is the final angular velocity?
(a) 2.5 rev/s
(b) 2.5 rad/s
(c) 27 rad/s
(d) 0.5 rev/s
(e) 5.0 rev/s
Answers: 3
Physics, 21.06.2019 22:50
As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.
Answers: 1
Physics, 22.06.2019 12:10
Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.
Answers: 1
Physics, 22.06.2019 13:00
The substances that are necessary for producing of certain hormones and that store and transport vitamins
Answers: 1
An adventurous stdent stands on top of a spinning chair holding a jack-o-lantern in each hand (each...
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