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The flywheel of a motorhas a mass of 35 kg and a moment ofinertia of 58 kg . m2. The motor develops aconstant torque of 250 N . m, and the wheel starts fromrest.A. What is the angular acceleration of the flywheel?B. What is its angular velocity as it makes 450revolutions?C. How much time is needed to achieve the first 450revolutions?
An Italian chef, who is very scientific in her approach to cooking, measures the specific heat of a porcini mushroom by placing it in a calorimeter filled with 0.678 kg of olive oil at 13.2°C. What is the specific heat of the mushroom
When the Sun is straight overhead, a hawk dives toward the ground with the constant velocity of 4.50 m/s at 52° below the horizontal. Compute the speed of her shadow on the level ground.
A horizontal magnetic field of 1.0 x 10^-4 T is at an angle of 30 degrees to the direction of the current in a straight wire 75 cm long. what is the magnitude of the force on the wire
A charged particle A exerts a force of 2.69 ?N to the right on charged particle B, when the particles are 14.0 mm apart. Particle B moves straight away from A to make the distance between them 17.0 mm. What vector force does it then exert on A?
A blood transfusion is being set up in an emergency room for an accident victim. What is the distance h above the victim's arm where the level of the blood in the transfusion bottle should be located
A spacecraft is in orbit around a planet. The radius of the orbit is 3.0 times the radius of the planet (which is R = 71497 km). What is the period of the spacecraft's orbit
A wire has a mass per unit length of 0.500 g/cm. what is the magnitude and direction of the minimum magnetic field
A 1125 kg car and a 2250-kg pickup truck approach a curve on the express way that has a radius of 225 m. (a) At what angle should the highway engineer bank this curve so that vehicles traveling at 95 km/h can safely round it? (b) As car and truck ..
a 0.06-kg mass vibrates according to the equation x=0.45cos6.40t, where x is in meter and t is in seconds. determine the kinetic energy and potential energies
If a lens with focal length 10 cm is placed 30 cm from an image 3 cm tall, how tall is the resulting image
The last stage of a rocket is traveling at a speed of 7200 m/s. This last stage is made up of two parts which are clamped together, What is the speed of the payload
Disturbed by speeding cars outside his workplace, Nobel laureate Arthur Holly Compton designed a speed bump (called the "Holly hump") and had it installed. Suppose a 1 800-kg car passes over a hump in a roadway that follows the arc of a circle of rad..
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