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Question1
A frictionless pulley has the form of a uniform solid disk of mass 4.00 and radius 23.0. A 1.80 stone is attached to a very light wire that is wrapped around the rim of the pulley, and stone is released from rest. As it falls down, the wire unwinds without stretching or slipping, causing the pulley to rotate. How far have to the stone fall so that the pulley has 3.40 of kinetic energy?
Question2
The potential energy of interaction between atoms in an ionic solid as a function of parting distance is given by V(r) = -A/r + Br^n, where A, B, and n are constants.
(a) Obtain a relation between the equilibrium lattice distance a and A,B, and n.
(b) The force constant between atoms is given by Ks = (d^2V/dr^2)r=0. If Young's modulus (in units of force/area) is basically given by Ks/a, explain that it varies as a^-4 in ionic solids.
At a certain location, the Earth's magnetic field has a magnitude of 5.8×10?5T, Find the magnitude of the magnetic flux through the top of a desk at this location that measures 140cm by 90
Calculate both absolute and relative pressure on the bottom of the tank if the meniscus (mercury surface) of the leg opening in the open air is a / 100 mm above the other b / 100 mm below the other.
On average, an electric water heater operates for 2.3 h each day. what is the cost of operating the heater
When the power is turned off on a turntable spinning at 59.0rpm, What is the angular acceleration (in rad/s2), of this turntable
Two water reservoirs are open to the atmosphere. The manometer contains mercury with the density of 13,600kg/m cubed. What is the difference in elevation if the manometer reading is 25cm.
A displacement vector r in the xy plane is 37 m long and directed at angle ? = 34° as shown below. Determine the x and y components of the vector
A 7.40-nC charge is positioned 1.70 m from a 4.80-nC charge. (a) Find the magnitude of electrostatic force that one particle exerts on the other. (b) Is the force attractive or repulsive.
Calculate the angular momentum of an ice skater spinning at 6.00 rev/s given his moment of inertia is 0.490 kg·m2
Suppose a ping-pong ball and a bowling ball are rolling toward you with the same momentum, and you exert the same average force in stopping each of them.
Derive the magnitude of the angular momentum vector of the electron in the ground state in tritium.
A sample of helium behaves as an ideal gas as it is heated at constant pressure from 273 K to 373 K. what is the mass of helium present
A loudspeaker produces a musical sound by means of the oscillation of a diaphragm whose amplitude is limited to 2.0 μm. At what frequency (in Hz) is the magnitude a of the diaphragm's acceleration equal to g?
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