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15 points A block of mass 5.00 kg is pushed from a height of 2.00m inside of a frictionless circular hoop of radius 2.00m. The block is given enough of a downward push to cause the block to just reach the top of the loop, with zero speed there.
A) What initial speed is given the ball?
B) What is its speed at the lowest point?
the displacement of a standing wave on a string is given by D = 2.8sin(0.70x)cos(55 t), Find the speed of a particle of the string
A free electron and a free proton are exactly 1.2cm apart. Find the magnitude of the acceleration of the proton
Determine the eccentricity of the orbit of Uranus
what time delay Delta t is necessary. A boxcar of mass 600 tons at rest becomes uncoupled on a 5.00 grade. If the track is considered to be frictionless, what speed does the boxcar have after 15 seconds.
A model rocket blasts off and moves upward with an acceleration of 15m/s^2 until it reaches a height of 35m, what is the total duration of the rocket's flight
A wooden raft has a mass of 76 kg. When empty it floats in water (density 1000 kg/m3) with 51 percent of its volume submerged. What mass of sand can be put on the raft without it sinking.
A source delivers an AC voltage of the form ?v = 92.2 sin (60?t), Find the rms voltage of the source
A gas is contained in a cubic box whose sides are 3m long. If the gas is initially at 80 K, and it is heated up to 320 K at constant volume, What is the final pressure
A 93.0 kg bungee jumper jumps off a bridge and undergoes simple harmonic motion. If the period of oscillation is 11.2 s, what is the spring constant of the bungee cord
Consider the following vector fields: C=2x(x-direction), D=5x(y-direction), F=4s(phi-direction), G=3s(s-direction), For each field which could be magnetic, calculate the current density at the origin in two different ways
In 2.0 minutes, a ski lift raises 4 skiers at constant speed to a height of 170 m. The average mass of each skier is 65.00 kg. What is the average power provided by the tension in the cable pulling the lift.
A current of -3.70 A is located 5.51 cm along the x axis, that is, at the point (5.51,0.00) cm. A current of -6.15 A is located 4.08 cm along the y axis, Find the magnetic field at the origin
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