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A large gear is made by starting with a solid metal disk of mass 5 kg and radius 25 cm. Three holes are then created by removing disc shaped pieces each of mass 800 g and radius 10cm. The holes are centered between the center of the gear and its rim. Determine the moment of inertia for the gear spinning about its center. Use si units, and keep at least three significant figures
An automobile travels on a straight road for 40.0 km [E] at 30.0 (km/h). It then continues in the same direction for another 40.0 km [E] at 60 (km/h). Estimate the average speed, distance, displacement, & average velocity for the trip.
a bar magnet is dropped through a loop of wire, what is the direction of the current at the instant it is in the middle
Solar energy is incident on the pond at an average rate of 400 . If the water absorbs all the solar energy and does not exchange energy with its surroundings, explain how many hours will it take to warm from 15 to 25 ?
a dog is walking slowly toward a motion detector. Draw a position graph that could represent this motion. Show your work.
A box is sliding up an incline that makes an angle of 27.7 ° regarding the horizontal. The coefficient of kinetic friction between the box and the surface of the incline is 0.113. The initial speed of the box at the bottom of the incline is 2.27 m/s...
compute the distance from the central maximum to the first bright region on either side of the central maximum.
The internal energy of the coin
Smoking causes blood vessels to constrict. If the average blood vessel radius of a smoker decreases 1.6% Calculate the needed percent increase in pressure
An athlete at the gym holds a 2.5 kg steel ball in his hand. His arm is 70 cm long and has a mass of 4-kg. What is the magnitude of the torque about his muster if he holds his arm straight out to his side, parallel to the floor.
The two spheres are then connected by a thin conducting wire, What is the charge on the first sphere after the two spheres are connected by the wire
By measuring the spectrum of wavelengths of light from our sun, we know that its surface temperature is 5760 K. Use this information to calculate the diameter of our sun
A projectile is fired horizontally from a gun that is 47.0 m above flat ground; emerging from the gun with a speed of 250 m/s.
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