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A 1 kg ball is attached to a 2 m long piece of very light string and suspended in such a way that it can freely swing and it passes just above the ground. A 2 kg block is placed on the ground so that the 1 kg block will collide with it when the cord is horizontal, as shown below. The coefficient of kinetic friction between the block and the ground is .1 A) Calculate the angle from the vertical at which the 1 kg ball must be raised so that, when the two masses collide elastically, the 2 kg block will travel 6 meters before stopping. B) If the 1kg ball is raised so that the cord is horizontal, and the two masses collide elastically after it is released , completely describe the motion of the two masses after the 1 kg ball is released.
Determine the magnitude of the force between two point charges, Q1 = -2e located at (-3.60 cm, +4.10 cm) and Q2 = -8e located at (-0.60 cm, -8.60 cm).
A proton is moving in an uniform electric field of part (a). At point A, the velocity of the proton is 1.90 X 104 m/s, east. What is the speed of proton at point B.
Translational equilibrium occurs when an object moves with constant velocity or is at rest resulting in an acceleration of magnitude equal to zero. Which law(s) governs this relationship
Assume The resistance per length of the wire is 0.089 Ω/m. When the magnetic field is 0.5 T, find out the magnitude of the current through middle leg PQ of the circuit.
The effects of the spin of the earth
You can turn the crank at a maximum rate of 3 turns per second, but hand crank is connected to the coil through a set of gears that makes the coil spin at a rate 6 times larger than the rate at which you turn the crank. What is the maximum emf you ca..
A 2.40cm × 2.40cm square loop of wire with resistance 1.10×10?2? has one edge parallel to a long straight wire. calculate the current in the loop
A force of 100 N is applied to a 50 kg mass in the direction of motion for a distance of 6.0 m, how much work is done by the varying force
You are working on the analysis of rocks brought back from the Moon, What is the density of the rock
Find the frictional torque, which is assumed to be constant. Find the moment of inertia of the wheel.
A 2000 kg car is slowed down uniformly from 21.0 m/s to 10.00 m/s in 3.60 s. (a) what average total force acted on the car all through that time? (b) How far did the car travel all through that time.
Damped forced oscillations, A single stage vibration isolation system consists of a heavy granite slab (100 kg) sitting on legs which act as a vertical damped spring. The "Q" (Quality Factor) of the system is 8.0, and the velocity damping coeffici..
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