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A 720 N man stands in the middle ofa frozen pond of radius 9.0 m. He isunable to get to the other side because of a lack of frictionbetween his shoes and the ice. To overcome this difficulty, hethrows his 1.2 kg physics textbook horizontally toward the northshore at a speed of 9.0 m/s. How longdoes it take him to reach the south shore?
An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. If the asteroid slows down over a distance of 1.3× 106 m determine the magnitude of the force
A cart of a mass 300 kg is pushed up a track at an angle of44 degrees from the bottom to a position that is 30m higher thanthe bottom in a time of 25 seconds. What is the velocity at the bottom
Consider a circuit consisting of a lightbulb and a capacitor. Part A:If the frequency of the generator is increased, does the intensity of the lightbulb increase, decrease, or stay the same? Part B:Choose the bestexplanation from among the following:
A boy whirls a stone in a horizontal circle of radius 1.2 m and at height 2.0 m above ground level. find the magnitude of the centripetal acceleration of the stone
A thin spherical copper shell of radius 9.5 cm carries an excess charge of -4.2 nC. How many excess electrons are on the outer surface of the shell
A car drives straight off the edge of a cliff that is 46 m high. How fast was the car traveling when it went over the cliff
Two trains are traveling toward each other at a constant speedof 10 miles/hr. What is the distance the fly traveled
What is the maximum speed the car can have at point B for the gravitational force to hold it on the track.
A bullet of mass 5.5 g is fired horizontally into a 2.1 kg wooden block at rest on a horizontalsurface. The coefficient of kinetic friction between block andsurface is 0.42. The bullet comes to rest in the block, which moves1.50 m.
A 15-cm-diameter cylinder of heliumgas is 20 cm long and at 20°C. Thepressure gauge reads 120 psi. What is the mass of the helium
Three point charges are placed as shown in the figure (Figure 1) . The positive point charge has a value 6.5nC. What is the net electric field at the position of the dot?
A string that is under 47.0N of tension has linear density 5.80g/m. What is the maximum velocity of a particle on the string
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