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A 3.0-g bullet traveling at 350 m/s hits a tree and slows down uniformly to a stop while penetrating a distance of 12 cm into the tree's trunk. What was the force exerted on the bullet in bringing it to rest?
a girl is standing at the edge of a cliff 111 m above the ground. she reaches out over the edge of the cliff and throws
A parallel plate capacitor with 4.0 mm plate spacing has circular plates and holds a charge of +/- 6 uC on each plate when it is charged to a potential of 100 V. What is the radius of the plates
Consider three identical metal spheres, A, B, and C. Sphere A carries a charge of +3q. Sphere B carries a charge of -q. Sphere C carries no net charge.
A 19.6cm diameter coil consists of 40 turns of circular copper wire 1.7mm in diameter. estimate the current in the loop
A gasoline engine takes in1.61×104 {\rm J} of heat and delivers3900 {\rm J} of work per cycle. The heat isobtained by burning gasoline with a heat of combustion of4.60×104 {\rm J}/{\rm g}.
A 20.0 kg box is dragged across a rough floor by a horizontalforce of 85.0N (i). Starting from rest, the force acts for3.00 s and the box is displaced 5.90 m in the +x direction. Determine the coefficient of friction between the box and the floor.
question a transformer has n1 350 turns and n2 2 000 turns. if the input voltage is ?v t 170 v cos wt what rms
The lenses of a particular set of binoculars have a coating with index of refraction n = 1.38, and the glass itself has n = 1.52. what is the minimum thickness of the coating
A uniformly charged ring is 1.0 cm in radius. The electric field on the axis 3.5 cm from the center of the ring has magnitude 2.5MN/C
A string with a mass of 31 g and a length of 2 m is stretched under a tension of 67 N. How much power must be supplied to the string
What is the minimum amount of electrical energy required by the refrigerator to carry out this process if it operates between reservoirs at temperatures of 20.0 °C and –20.0 °C?
When a box rests on a round sheet of wood on the ground, it exerts an average pressure p on the wood. bwhat is the new average pressure
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