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The apparatus consists of a round level table in the center of which is a massless ring. There are three strings tied to different spots on the ring. Each string passes parallel over the table and is individually strung over a frictionless pulley (there are three pulleys) where a mass is hung. The table is degree marked to indicate the position or angle of each string. There is a mass m1 = 161 g located at θ1 = 26.5° and a second mass m2 = 223 g located at θ2 = 279°. Calculate the mass m3, and location (in degrees), θ3, which will balance the system and the ring will remain stationary.
An old Chrysler with mass 2200 kg is moving along a straight stretch of road at 86 km/h. How fast (in km/h) is the center of mass of the two cars moving
My 17 kilogram son goes down a straight slide that makes a 40 degree angle with the horizontal. Obtain what the coefficient of kinetic friction of the slide
A conducting slab (think of a large flat sheet of metal) is large compared to the size of individual particles, What is the acceleration of these particles
Activity rule. A Hopfield network's activity rule is for each neuron to update its state as if it were a single neuron with a sigmoid activation function. The updates may be synchronous or asynchronous, and involve the equations
Two long parallel wires carry currents of 2.4 Amp, exert a repulsive force per unit length on each other of 1.5 x 10-5 N/m. Find what is the distance between the two wires
A simple pendulum of length l and mass m is attached to a massless spring with elastic constant k. The attachment point moves only in a vertical direction. Obtain the Hamiltonian for the system
a mortar crew is positioned near the top of a steep hill. enemy forces are charging up the hill and it is necessary for
A train at rest emits a sound at a frequency of 1045 Hz. An observer in a car travels away from the sound source at a speed of 37 m/s. What is the frequency heard by the observer .
A 5.90 gram lead bullet traveling at 320 meter per second is stopped by a large tree. find the increase in temperature of the bullet
In the Bohr model of the hydrogen atom, an electron in the 6th excited state moves at a speed of 6.08 104 m/s, What is the effective current associated with this orbiting electron
An object of mass .10kg makes an elastic head on collision with a stationary object with a mass of .15 kg. What is the initial velocity of the .10kg object
Scientists are constantly searching for new, viable, alternative forms of energy to power our cars and homes.
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