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A typical ten-pound car wheel has a moment of inertia of about 0.35kg *m2. The wheel rotates about the axle at a constant angular speed making 70.0 full revolutions in a time interval of 5.00 seconds. What is the rotational kinetic energy K of the rotating wheel? Express answer in Joules.
A 130 g ball with speed 7.5 m/s strikes a wall perpendicularly and rebounds in the opposite direction with the same speed. find the magnitudes of the average force on the wall
a 90 ohm resistor has a current of .6A and is connect in series with a 150 ohm resistor. What is the emf of the battery to which the resistors are connected
A cannon fires a cannonball from the top of a wall at a speed of 25.58 m/s and an angle of 17.44 degrees from the horizontal. What is the horizontal distance from the wall where the fired cannonball hits the ground
One mole of a monatomic gass initially at 273 K and 1 atm is compressed isothermally (T constant) from volume 22.4 L to 11. 4 L, Find the final pressure and draw a PV diagram, Labeling the initial and final states 1 and 2
An air molecule is moving at a velocity of 444 m/s. How various meters would the molecule move during 7.00 ms (milliseconds) if it didn't collide with any other molecules.
Squaw Valley ski area in California claims that its lifts can move 48300 people per hour. estimate the maximum total power needed
A uniform door weighs 50-N and is 1.0 m wide and 2.70m high. What is the magnitude of the torque because of the door's own weight about a horizontal axis perpendicular to the door and passing through a corner.
A 9.88-kg monkey is hanging by one arm from a branch and swinging on a vertical circle. Find the magnitude of the tension in the monkey's arm
A small rocket to gather weather data is launched straight up. few seconds into the flight, its velocity is 110 and it is accelerating at 17 . At this instant, the rocket's mass is 50 and it is losing mass at the rate of 0.45 as it burns fuel.
What hormones are hypersecreted causing hyperglycemia and hypertension? What is the cause and what physical factor allow to rule out thyroid problem.
To make a simple microscope a student places two converging lenses of +20 D at opposite ends of a 34 cm long tube. What is the tube length of the microscope
question1a bridge truss extends 200m across a river. the structure is free to slide horizontally to permit thermal
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