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A turntable must spin at 33.4 rpm (3.50 rad/s) to play an old-fashioned vinyl record. Determine how much torque must the motor deliver if the turntable is to reach its final angular speed in 1.0 revolution, starting from rest? The turntable is a uniform disk of diameter 30.5 centimeter and mass 0.25 kilogram.
A long wire is known to have a radius greater than 4.0 mm and to carry a current that is uniformly distributed over its cross section. what is the radius of the wire
Find the object distances (in terms of f) for a thin converging lens of focal length f if, calculate the magnification of the lens for cases (a) and (b)
A wheel with radius 43.9 cm rotates 4.27 times every second. Find the period of this motion.
A capacitor has a capacitance of 250 nF and a voltage is placed across it which grows as a function of time as: V(t) = 240 mV/s3 × t3
A 100 MeV particle decays into two particles. one of these two particles has a mass of 10 MeV and a speed of 3/5. what was the inital particle's speed
An electric field of 350000 N/C points due west at a certain spot. What is the magnitude of the force that acts on a charge of -9.9C at this spot?
An electron with an initial speed of 660,000 m/s is brought to rest by an electric field. What was the potential dissimilarity that stopped the electron? What was the initial kinetic energy of the electron, in electron volts?
two 2.0-cm-diameter insulating spheres have a 6.70cmspace between them. one sphere is charged to 83.0nc the other to -
A 713 kilogram elevator starts from rest. It moves upward for 3.59 second with a constant acceleration until it reaches its cruising speed of 2.09m/s. Compute the average power delivered by the elevator motor during this period
A particle with a charge of -8.5μC is traveling East with a speed of 45m/s in a region with a magnetic field of 0.30T. If the direction of the magnetic field is South, What is the direction of the magnetic force?
An oscillator with a natural frequency of 480 Hz is driven by a 540 Hz sinusoidal signal. At what frequency does it oscillate
Lightbulbs with the power ratings giving in the figure are connected in a circuit as shown. Find the power dissipated to each bulb
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