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A saw blade has a mass of 0.5 kg and a radius of 10 cm and is rotating at 300 rpm. Once turned off, it takes 5 seconds to slow to a complete stop. What frictional torque acts on the saw blade as its lows to a stop? Suppose friction is the only force acting on the saw blade. (Moment of inertia for a disk: I=1/2MR2)
The resistance of a bagel toaster is 14 ?. To prepare a bagel, the toaster is operated for one minute from a 120-V outlet. How much energy is delivered to the toaster?
A block of mass 5 kg lies on a horizontal table. The block is at rest. The only forces acting on the block are the force due to gravity and the normal force from the table. What is the magnitude of the friction force
A square steel plate is 0:20 m on a side and 4:00 mm thick. Find the displacement of the plate
An object with a height of 47 centimeter is placed 2.4 meter in front of a convex mirror with a focal length of -0.40 meter. Compute is the image upright or inverted
Three astronauts, propelled by jet backpacks, push and guide a 115 kg asteroid toward the processing dock, exerting the forces, with F1 = 34 N, F2 = 57 N, F3 = 41 N, θ1 = 30°, and θ3 = 60°
A very long, straight solenoid with a cross-sectional area of 6.15 is wound with 30 turns of wire per centimeter, compute the average induced emf in the secondary coil
73 magnetic target is suspended on a string. A .025magnetic dart, shot horizontally, stickes the target head-on. the dart and the target together, acting like apendulum, swing 12 cm above the initial level before instantaneously coming to a rest...
two small objects a and b are fixed in place and separated by 2.62 cm in a vacuum. object a has a charge of 1.29 micro
question a screen is placed49.0cm from a single slit which is illuminated with light of wavelength 677nm. if the
Consider three containers each at the same temperature and pressure. One holds a classical gas, one holds a gas of bosons, and one holds a gas of fermions. Arrange these containers in order from largest to smallest and explain how you know.
Investigate Ohm’s law for reverse currents in resistors. Turn off the power supply and reverse the connections on the power supply. Turn the power supply back on and take data from 5.0 V to 0 V. Do not stop data collection.
The escape velocity of a bullet from the surface of planet Y is 1951 m/s. Calculate the escape velocity from the surface of planet X
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