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A 52.0 kilogram ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 1.50 turns every second. The distance from one hand to the other is 1.5 meter. Biometric measurements indicate that each hand typically makes up about 1.25 percent of body weight.
(a) Find what horizontal force must her wrist exert on her hand? Express the force in part (a) as a multiple of the weight of her hand.
A 45.0 kg person, standing 1.3 m from the axis, begins to run on the disk in a circular path and has a tangential speed of 2.80 m/s relative to the ground. Find out the resulting angular speed of the disk (in rad/s)
One of Einstein's postulates says that nothing travels faster than the speed of light in a vacuum, c, what limit does this place on the numerical value for n
Two small charges with a mass of 1.0 g each are connected by 2.0-cm-long insulating rod of negligible mass. Obtain the moment of inertia around the center of mass
A small boat is headed for a harbor 34 km directly northwest of its currentposition when it is suddenly engulfed in heavy fog. The captainmaintains a compass bearing of northwest and a speedof 10.8 km/h relative to thewater.
a uniform electric field of 300 nc makes an angle of 25o with the dipole moment of an electric dipole. if the potential
a parallel-plate vacuum capacitor with plate area a and separation x has charges q and -q on its plates. the capacitor
A block of mass 4 kg is compressing a spring with K=2500 N/m a distance of 0.3 m. How much work does the spring do on the block
A tuning fork vibrates at a frequency of 530 Hz. An out-of-tune piano string vibrates at 535 Hz. How much time separates successive beats
Janet jumps off a high diving platform with a horizontal velocity of 1.55 m/s and lands in the water 1s later. How high is the platform? The acceleration of gravity is 9.80 m/s2.
When catching a baseball, a catcher's glove moves by 8 cm along the line of motion of the ball. how much work is done by the ball
A diverging lens (f = -12 cm) is located 20.0 cm to the left of a converging lens (f = 35.0 cm). find the distance of the final image relative to the converging lens
A magnetic field is applied perpendicular to the plane of the disk. Assume that the field is 0.900 T, Find the emf generated between the brushes
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