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Two wheels have the same mass and radius of 5.0 kg and 0.38 m,respectively. One has (a) the shape of a hoop andthe other (b) the shape of a solid disk. Thewheels start from rest and have a constant angular acceleration with respect to a rotational axis that is perpendicular to theplane of the wheel at its center. Each turns through an angle of 12rad in 8.4 s. Find the net external torque that acts on each wheel.
A skid mark has length 25 m. You measure the coefficient of friction between the tire and road as 0.50. determine the initial speed of the car
A copper wire has a resistance of 29 ? at 19° C. An aluminum wire has three times the length and two times the radius of the copper wire. What is the resistance of the aluminum wire at 19° C
a home receives 1.7 kw of electric power from a transformer on a nearby pole. the line from the substation to the
question when two moles of hydrogen and one mole of oxygen react to form two moles of water the energy released is 485
A 17-cm-long microscope has an eyepiece with a focal length of 3.1cm and an objective with a focal length of 0.35cm. What is the approximate magnification
A 0.0425 kg bullet traveling horizontally with a velocity of magnitude 415 m/s is fired into a wooden block with mass 1.12 kg, initially at rest on a level surface with a coefficient of friction μ=.27.
you throw a ball upward with an initial speed of 4.6 rm ms. when it returns to your hand 0.94 rm s later it has the
A uniform electric field of magnitude 640 N/C exists between two parallel plates that are 4.00 cm apart. Calculate the distance from the positive plate
A 181.99 kg car that stopped at a traffic light is struck from the rear by a 419.72 kg car. find the velocity of the entangled cars after the collision
Basic science concepts in optics like Which types of electromagnetic radiation can be seen from the surface of Earth.
A 75 human sprinter can accelerate from rest to 10 in 3.5 . During the same interval, a 34 greyhound can accelerate from rest to 17, evaluate the average power output for each
a 220 km long high-voltage transmission line 2.0 cm in diameter carries a steady current of1020a. if the conductor is
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