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A kid runs towards the edge of a merry-go-round that is not rotating and jumps on. The merry-go-round then rotates with a constant angular velocity ω. Assume that the kid has a mass of 40 kg and is initially running at a speed of 2 m/s tangent to the edge of the merry-go-round. The merry-go-round is a uniform disk with a mass of 100 kg and a radius of 2 m. Assume that it rotates without friction. What is the final angular velocity ωf (in radians/s) of the merry-go-round (with the kid riding)?
Two identical, small insulating balls are suspended by separate 0.35-m threads that are attached to a common point on the ceiling, Determine the tension in the threads
A 75 kilogram shell is fired with an initial speed of 125 m/s at an angle 55o above horizontal. find how far from the launch point does the lighter fragment land
In Dallas, the morning after a winter ice storm, a 1400 kg automobile going west on Chestnut Street at 34.0 km/h collides by a 2800 kg truck going south across Chestnut Street at 52.0 km/h. If they become coupled on collision, what are the magnitude ..
You are watching your friend play hockey. In the course of the game, he strikes the puck in such a way that, when it is at its highest point, Find the vertical component of its initial velocity
A spring with constantk = 40 N/m is at thebase of a frictionless, 30 inclined plane. how far does it go up the incline before it stops
An object of mass 5 kg is moving with a momentum of 50 kg m/s. What is the objects speed? What is the objects kinetic energy
While riding her bicycle on a 140 meter track, a rider took 18 seconds on her first lap and 17 seconds on her second
A 0.250 kg ball attached to a string s being swung in a vertical circle, What is the minimum speed at the top of the circle to keep the string from going slack
Two particles are fixed to an x axis: particle 1 of charge-5.81 x 10-7 C is at the origin and particle 2 of charge+5.81 x 10-7 C is at x = 22.2 cm. Midway between the particles, what is the magnitude of the net electricfield?
An electron has a kinetic energy of 1.2 x 10-17 J. It moves on a circular path that is perpendicular to a uniformmagnetic field of magnitude 4.1 x 10-5 T. Determine the radius of the path.
Suppose 2100 J of heat are added to 3.3 mol of argon gas at a constant pressure of 120 kPa. (Assume that the argon can be treated as an ideal monatomic gas.)
An electronics technician wishes to construct a parallel-plate capacitor using rutile (? = 1.00 102) as the dielectric. If the cross-sectional area of the plates is 1.00 cm2, what is the capacitance if the rutile thickness is 1.00 mm?
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