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A diver can change his rotational inertia by drawing his arms and legs close to his body in the tuck position. After he leaves the diving board (with some unknown angular velocity), he pulls himself into a ball as closely as possible and makes 2.00 complete rotations in 1.33 s. If his rotational inertia decreases by a factor of 3.00 when he goes from the straight to the tuck position, find his angular velocity when he left the diving board?
a 30 year old women takes a trip on a rockect leaving her 30 year old brother behind. She travels at a speed of .8c and is gone for 20 years, how many years older/younger is she than her brother
A ball is shot from the ground into the air. At a height of 9.60 m, the velocity is observed to be v = (7.70 m/s) i + (7.00 m/s) j. What is the maximum height that the ball will rise
A stone thrown upward from the top of a 100ft cliff at 150ft/s eventually falls to the beach below. (For this problem take the acceleration because of gravity to be -32 ft/s^2; take upwards to be a positive direction.) How long does it take the st..
A cart with mass 310 g moving on a frictionless linear air track at an initial speed of 1.4 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. What is its speed after impact
Monochromatic light (Wavelength = 500 nm) passes through two slits and onto a screen 2.5 m away. what is the new distance between bright fringes
A 25.0g arrow is shot through a 7.8 cm apple. If the arrow enters the apple at 38.8 m/s and emerges with a speed of 30.10m/s in the same direction, what is the magnitude of force with which the apple has resisted the arrow.
Calculate the flow rate in cubic centimeters per second in an aorta of radius 60 cm if the average blood velocity in it is 0.81 cm/s
A crate of mass 11.5 kg is pulled up arough incline with an initial speed of 1.50 m/s. The pulling forceis 100 N parallel to the incline, which makes an angle of16.0° with the horizontal. The coefficient of kinetic friction is 0.400, and the crate..
A model airplane flies ina horizantal circle at the end of a50 meter long control wire, with a speed of 40 m/s. The plane has amass of 1.25 kg. Calculate the tension in the wire if the planes wings make a constant 15 degrees angle with the horizontal..
A pressurized cylindrical tank, 5.0 in diameter, contains water which emerges from the pipe at point C, with a velocity of 12 . Point A is 10 above point B and point C is 3 above point B. The area of the pipe at point B is 9×10?2 and the pipe narr..
Water is supplied to an office building 41.5 m high through a pipe at ground level. Find the minimum pressure in the supplypipe so that water can reach the top floor of the building.
a cylinder of mass 10.0kg rolls without slipping on a horizontal surface.a at the instant its center of mass has a
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