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It can be shown that the maximum speed a black hole can spin is where the angular momentum L is given by Lc=GM2. The angular momentum of the Sun is 1.91 x 1041 kg-m²/s. Find what percent is this of its maximal rotation as a black hole?
A block is given an initial velocity of 7.0 m/s up a frictionless 24 degree incline. find the block's acceleration as it slides up the plane
a 13 g bullet traveling 222 ms penetrates a 2.0 kg block of wood and emerges cleanly at 159 ms. if the block is
in a pool game a cue ball traveling at 0.80 ms hits the stationary eight ball. the eight ball moves off with a velocity
A hardworking ant must supply 0.0500 N to pull a small piece of fruit at constant velocity over a distance of 8.00 cm up a small hill to the entrance of the colony, calculate the work done by the ant by pulling the piece of fruit up the hill
A rocket is launched vertically upward from Earth's surface at a speed of 5.1 km/s. Determine what is its maximum altitude
A uniform magnetic field points north; its magnitude is 4.8 T. A proton with kinetic energy 7.5 10-13 J is moving vertically downward in this field. What is the magnetic force acting on it
A student constructs an astronomical telescope with a magnification of 10. what is the resulting length of the telescope
On the way from a planet to a moon, astronauts reach a point where that moon's gravitational pull transitions from being weaker than that of the planet to being stronger than that of the planet. Determine the distance of this point from the center ..
A student pushes a loaded sled whose mass m is 240kg for a distance d of 2.3m over the frictionless surface of a forzen lake. if the sled starts from rest, what is its final velocity
An electric car accelerates for 8.0 s by drawing energy from its300-V battery pack. During this time,1190 C of charge passes through thebattery pack. Find the minimum horsepower rating of the car.
A 940 gram rock is whirled in a horizontal circle at the end of a 1.2 meter long string, find what angle does the string make with the horizontal
A 1900kg car experiences a combined force of air resistance andfriction that has the same magnitude whether the car goes up ordown a hill at 27m/s. Going up a hill, the car's engine needs toproduce 47hp more power to sustain the constant velocity ..
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