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A figure skater through her finale can increase her rotation rate from an initial rate of 1.09 revolutions every 1.82 s to a final rate of 3.05 revolutions per second. If her initial moment of inertia was 4.52 kg*m2, what is her final moment of inertia?
What fraction of the power radiated by the sun is intercepted by the planet Neptune? The radius of Mercury is 2.48 107 m
Therefore of his observations, Ole Roemer concluded that eclipses of Io by Jupiter were delayed by 22 min throughout a six-month period as the Earth moved from the point in its orbit where it is closest to Jupiter to the diametrically opposite point ..
The 75 kg man is falling at 15 m/s! In an attempt to stop his fall, the brake shoe is pressed against the spinning pulley with a force of 1000 N. how long does it take to stop the man's fall
a 4.80 kg block is suspended from a spring with k 400 nm. a 56.0 g bullet is fired straight up into the block from
In a second training exercise, the centrifuge speeds up from rest with a constant angular acceleration. When the centrifuge reaches an angular speed of 2.50 rad/s.
Find the resulting angular speed of the disk (in rad/s) and describe the direction of rotation.
A 2.0 kg breadbox on a frictionless incline of angle ? = 33° is connected, by a cord that runs over a pulley, to a light spring of spring constant k = 120 N/m, as shown in the figure below. The box is released from rest when the spring is unstrect..
mary is in a train traveling at 30ms. fred is standing next to the train tracks.the train passes fred at 30ms. 2m after
The rod shown in the drawing is pivoted about an axle passing through its center (solid circle). Is the net torque about the axle due to these forces zero
A centrifuge in a medical laboratory rotates at an angularspeed of 3600 rev/min. What is the constant angular acceleration of the centrifuge
A 5.20 g charcoal sample from anancient fire pit has a 14C activity of 63.0disintegrations/min. How old is the charcoal sample
An electron moves in a circular path perpendicular to the constant magnetic field with a magnitude of 2.00 mT. The angular momentum of the electron about the center of the circle is 5.50 multiplied by 10-25 J•s.
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