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A woman with mass 53.5 kg is standing on the rim of a large disk that is rotating at 0.510 rev/s about an axis perpendicular to it through its center. The disk has a mass of 110 kg and a radius of 3.65 m . Calculate the magnitude of the total angular momentum of the woman-plus-disk system, assuming that you can treat the woman as a point.
Forming an equation.
Two parallel wires are 100m long and 10cm apart and carry opposite chargse of 100 micro couloumbs, what is the electrical force between the wires
As a engineer, you are designing a heat pump that is capable of delivering heat at the rate of 22 kW to a house. The house is located where, in January, the average temperature is 10°C.
Atomic Hydrogen in the ground state absorbs a photon, raising the electron to the n=3 excited state. Determine the number of classical revolutions the electron makes during the 0.1 ns time interval
A stationary proton is accelerated through a potential difference of 83.5 KV. what speed did the proton acquire by using work-energy theorem
An extension cord made of two wires of diameter 0.129 cm (no. 16 copper wire) and of length 2.7 m (9 ft) is connected to an electric heater which draws 11.5 A on a 120-V line
The helium atom has a volume of about 3 x 30^-30 (m^3). What fraction of a volume of helium gas at STP is actually occupied by atoms
Quentin is lifting a 10 kg dumbbell by pulling upward on it with a 108.1 N force. What is the acceleration of the dumbbell
A dock worker applies a constant force of 80.0 N to a block of ice on a smooth horizontal floor. What is the mass of the block of ice
A proton is projected perpendicularly into a magnetic field that has a magnitude of 0.29 T. What is the magnitude of the field used for the electron
Consider an electron in the first Bohr orbit of a hydrogen atom, (a) What is The radius (in meters) of this orbit? (b) What is the total energy (in eV) of the electron in this orbit? (c) How much energy is required to ionize a hydrogen atom when the ..
A Piece of ice of mass mi at 0 C is placed in water of mass mw at 20 C. The system is in a container of negligible heat capacity, what is the equilibrium temperature of the system
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