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A uniform disk that has a mass M rotates freely about a horizontal axis that goes during the center and is perpendicular to the plane of the disk. A particle of mass m rests at the top of the disk on the rim directly above the pivot. As the particle reaches its lowest point what is the (a) angular speed of the disk and (b) the force exerted by the disk on the particle
The model airplane is flying at a speed of 23 m/s on a horizontal circle of radius 17 m. The mass of the plane is 0.96 kg. The person holding the guideline pulls it in until the radius becomes 8.0 m. The plane speeds up and tension in the guidelin..
A 4.55 mol sample of a diatomic ideal gas (? = 1.4) expands slowly and adiabatically from a pressure of 4.10 atm and a volume of 11.5 L to a final volume of 30.0 L. What is the initial temperature of the gas
question a portable cd player operates with a current of 27ma at a potential difference of 4.2 v. what is the power
A potter's wheel (a solid, uniform disk) of mass 6.0kg and radius 25cm spins about its central axis with an angular speed of the wheel is 15rpm. Find the new angular speed of the system
In an L-C circuit, C=3.21*10^-6 F and L=86.0mH. What is the magnitude of the charge on the capacitor at an instant when the current in the inductor has a magnitude of .501mA
A typical coal-fired power plant burns 310 metric tons of coalevery hour to generate 780MW of electricity. 1metricton=1000kg. What is the power plant's thermal efficiency
Coherent light that contains two wavelengths, 665 nm (red) and 575 nm (yellow), passesthrough two narrow slits separated by 0.300 mm, and theinterference pattern is observed on a screen 5.00 m from the slits.
A cardiac pacemaker can be affected by a static magneticfield as small as 1.7 mT. How close can a pacemaker wearer come toa long, straight wire carrying 18 A?
An idealized voltmeter is connected across the terminals of a 15.5-V battery, and a 75.0 ohm appliance is also connected across its terminals. How much power is being dissipated by the appliance
A ball swings in a vertical circle at the end of a rope 1.50 mlong attached to the ceiling. When the rope is 36.9 degrees pastthe lowest point and is on its way up, its total acceleration isgiven by (-22.5 i + 20.2 j) m/s2. At thatinstant determine t..
A military helicopter on a training mission is flying horizontally at a speed of 60.0 m/s, How far does it travel horizontally while falling
The electron mass is 9×10?31 kg. What is the magnitude of the momentum of the electron
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