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A disk of radius 0.2m and moment of inertia 1.5 kg*m^2 is mounted on a nearly frictionless axle. A string is wrapped tightly around the disk, and you pull on the string with a force of 25 N. After w while the disk has reached an angular speed of 2 radians/s. What is its angular speed 0.1 seconds later?
A crystal is irradiated with X-ray photons with energies of 1.65 × 10-15 J. At what angles of incidence will the X-rays reflect from the crystal
An automobile crankshaft transfers energy from the engine to the axle at the rate of 110 kW when rotating at a speed of 2170 rev/min. What torque does the crankshaft deliver
An RC circuit with C = 44.8 µF and R = 5.8 has a 23 V source in it. With the capacitor initially uncharged, an open switch in the circuit is closed. What is the current in the resistor at that time
Air flows through the supersonic nozzle. The inlet conditions are 7 KPa and 420 degree C. The nozzle exit diameter is adjusted such that the exiting velocity is 700m/s. Calculate the exit temperature
Compute the linear momentum and angular momentum of a Frisbee of mass 0.130 kg if it has a linear speed of 1.25 m/s and an angular velocity of 62.5 rad/s
One kilogram of water vapor (as an ideal gas) is filled in a frictionless piston-cylinder assembly. The piston can move freely in the cylinder and it is in surroundings of 1 atm. Determine the heat transfer for the process
A common flashlight bulb is rated at 0.30 A and 2.8 V (the values of the current and voltage under operating conditions). what is the temperature of the filament when the bulb is on? The filament is made of tungsten
q1. a ranger in a national park is driving at 52 kmh when a deer jumps onto the road 86 m ahead of the vehicle. after a
A uniform, cylindrical pulley of mass M=12.7 kg and radius R=0.636 m rotates freely about a fixed horizontal axis. What is the magnitude of the angular acceleration of the pulley
A 545-turn circular-loop coil with a diameter of 18.8 cm is initially aligned so that its plane is perpendicular to the Earth's magnetic field, What is the value of the Earth's magnetic field
A 58-kg water skier is being pulled by a nylon tow rope that is attached to a boat. What is the change in the length of the rope when the skier has an acceleration whose magnitude is 0.90 m/s2
a beam of white light is shined at normal incidence onto the outside of a soap bubble(index of soap solution = 1.340). What is the thinnest wall thickness of the bubble
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