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A size-5 soccer ball of diameter 22.6 cm and mass 426 g rolls up a hill without slipping, reaching a maximum height of 7.00 m above the base of the hill. We can model this ball as a thin-walled hollow sphere.
At what rate was it rotating at the base of the hill?
How much rotational kinetic energy did it then have?
A speck of dirt is embedded 3.00cm below the surface of a sheet of ice having a refractive index of 1.309. What is the apparent depth of the speck
A saturated solution of strontium hydroxide is prepared in the excess solid Sr(OH)2 is allowed to settle. A 25.0mL aliquot of the saturated solution is withdrawn and transfer to an Erlenmeyer flask
A 70-? electrical appliance and a 90-? electrical appliance are plugged into the outlets of a house. By what factor will the power used change
On dry land, an athlete weighs 63.7kg . The same athlete, when submerged in a swimming pool and hanging from a scale, Determine the athlete's percent body fat
By what factor would its kinetic energy decrease if the car traveled half as fast
A high-speed flywheel in a motor is spinning at 450 rpm when a power failure suddenly occurs. The flywheel has mass 40.0 kg and diameter 72.0 cm. How many revolutions would the wheel have made during this time
When the door is open and at rest, the door closer exerts a torque of 5.40 NxM. What is the least force that you need to be relevant to the door to hold it open.
A person of mass 75kg stands at the center of a rotating merry-go-round platform of radius 3.5mand moment of inertia 920kg?m2. compute the angular velocity when the person reaches the edge
Moving to the right is postive. A 9.1 g object moving to the right at 17 cm/s makes an elastic head on collision with a 20 g object moving in the opposite direction at 19 cm/s. Find the velocity of the second object after the collision
During a violent storm, a car is struck by a failing high-voltage wire that puts an excess charge of -850 mircoC on the metal car. a) how much of this charge is on the inner surface of the car? b) how much is on the outer surface of the car?
An electron with a speed of 1.1 × 107 m/s moves horizontally into a region where a constant vertical force of 5.6 × 10-16 N acts on it. determine the vertical distance the electron is deflected
Jack and Jill are on two different floors of their high rise office building and looking out of their respective windows. What is the height between the two window ledges
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