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A flat uniform circular disk has a massof 2.30 kg and a radius of58.0 cm. It is suspended in ahorizontal plane by a vertical wire attached to its center. If thedisk is rotated 2.50 rad about thewire, a torque of 0.0800 N·m isrequired to maintain that orientation.
(a) Calculate the rotational inertia of the disk about the wire.
kg·m2
(b) Calculate the torsion constant.
N·m
(c) Calculate the angularfrequency of this torsion pendulum when it is set oscillating.
rad/s
an object starts moving in a straight line from position x at time t0 with velocity v0 . its acceleration is given by
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Three resistors, 28, 48, and 80 ?, are connected in series, and a 0.53-A current passes through them. What is the potential difference across the three resistors
Cost of electricity varies but typical values are around $0.15/kWh. Using this price, calculate the cost of making a piece of toast in 3.00 min with a 980W toaster
Typical field strengths are a few femoteslas (1fT=10^-15T). An adult brain is about 140mm wide, A reasonable magnetic field is 4.35fT at the sensor. According to this model, what is the current in the brain?
as LC circuit consists of a capacitor with C = 3.4 x10-6 F and an inductor with L = 0.080 H. What will be this maximum current
a 6.00 capacitor that is initially uncharged is connected in series with a 4500 resistor and a 506emf source with
A beam of light is incident from air on the surface of a liquid. If the angle of incidence is 28.5° and the angle of refraction is 16.6°, find the critical angle for the liquid
A 1360 kg geosynchronous satellite orbits a planet similar to Earth at a radius 1.97 × 105 km from the planet's center. What is the force acting on this satellite
q1. a spaceship of mass 2.50806 kg is to be accelerated to a speed of 0.820c.a what minimum amount of energy does this
Select True or False for the following statements about conductors in electrostatic equilibrium. The electric field inside the conducting material is always zero.
A solenoid of length 13 cm consists of a wire wrapped tightly around a wooden core. The magnetic field strength is 5.0 T inside the solenoid. what does the magnetic field become
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