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A hollow sphere of radius 0.250 m, with rotational inertia I = 0.0790 kg·m2 about a line through its center of mass, rolls without slipping up a surface inclined at 41.8° to the horizontal. At a certain initial position, the sphere's total kinetic energy is 18.0 J.
(a) How much of this initial kinetic energy is rotational? (b) What is the speed of the center of mass of the sphere at the initial position? When the sphere has moved 0.700 m up the incline from its initial position, what are (c) its total kinetic energy and (d) the speed of its center of mass?
A nail gun fires a nail into a piece of wood. The nail is going a velocity of 9.0 m/s right before entering the wood. The mass of the nail is 0.060 kg, how far into the wood does the nail go
Bob can't see well enough to time when the ball hits the ground. Bob's friend then measures that the ball landed 122 m from the base of the cliff. How high up is Bob, if the ball started from exactly 2 m above the edge of the cliff?
Assume the temperature of the lake water is 17.0°C, and use 2.00x103 J/(kg·C°) for the specific heat capacity of snow.
o skydivers are holding on to each other while falling straight down at a common terminal speed of 57.1 m/s. compute the change in kinetic energy of the system
a ball is thrown straight up with a speed of 30 ms. a. how long does it take the ball to reach the maximum height? b.
A flashlight uses batteries that add up to 4.5 V and has a power output of 0.56 W. How much current is drawn from the batteries
The average value of the squared speed does not equal the square of the average speed. Calculate the average value of the squared speed
A 1.9cm × 1.9cm × 1.9cm box with its edgesaligned with the xyz-axes is in the electric field E? =(360x+150)i^N/C, where x is in meters
The passengers in a roller coaster car feel 50% heavier than their true weight as the car goes through a dip with a 40m radius of curvature. What is the car's speed at the bottom of the dip
write down the equations expressing conservation of momentum for the components in the x and y directions separately.
A fish takes the bait and pulls on the line with a force of 2.1 N. How much line does the fish pull from the reel in 0.28 s
What law of physics would be violated
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