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A playground merry-go-round has radius 2.20m and moment of inertia 2800 kg*m^2 about a vertical axle through its center, and it turns with negligible friction. A child applies an 23.0 N force tangentially to the edge of the merry-go-round for 25.0 s . If the merry-go-round is initially at rest, what is its angular speed after this 25.0 s interval? How much work did the child do on the merry-go-round? What is the average power supplied by the child?
Find the charge on sphere A. How far from the dog will the suitcase land.
A 2.60 kg steel gas can holds 15.0 L of gasoline when full. What is the average density of the full gas can, taking into account the volume occupied by steel
According to the law x =a sin2(wt - pi/4), a point moves along the x axis, Find the amplitude & period of oscillations
An object fired at an angle of 39 degrees above horizontal takes 1.10 s to travel the last 12.5 m of its vertical distance, determine With what velocity was the object launched
A 5.080 kg block of wood rests on a steel desk, State the force of friction applied to the block by the table at the following times: t=0 and t>0
Suppose a hockey puck slides down a frictionless ramp with an acceleration of 5.90 m/s2, What angle does the ramp make with respect to the horizontal
Two equal charges of magnitude +1 C are separated by a distance of 1 km. What is the force acting between these two charges
A railroad locomotive with a mass of can exert a force of. At what rate can it accelerate when pulling a train
A violin string vibrates at 264 Hz when unfingered. At what frequency will it vibrate if it is fingered one fourth of the way down from the end
As a baseball is being caught, its speed goes from 36 to 0 m/s in about 0.009 s. Its mass is 0.145 kg. What is the size of the force acting on it
If a 20kg mass hangs from the right side of a massless bar 5 meters in length and a 5kg mass hangs from the left side of the bar
An electric dipole includes a charge of 4 ?C and a second charge. What is the total charge of the dipole?
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