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The wheels of a wagon can be approximated as the combination of a thin outer hoop, of radius rh = 0.209 m and mass 4.51 kg, and two thin crossed rods of mass 9.52 kg each. You would like to replace the wheels with uniform disks that are 0.0588 m thick, made out of a material with a density of 8750 kilograms per cubic meter. If the new wheel is to have the same moment of inertia about its center as the old wheel about its center, what should the radius of the disk be?
Baseball scouts often use a radar gun to measure the speed of a pitch, What will be the increase in frequency if these waves are reflected from a 60.0mi/h fastball headed straight toward the gun
In a serious accident, a nuclear power plant%u2019s reactor vessel cracks, and all of the cooling water drains out. how much energy will it take to melt the core
To help prevent frost damage, 4.20 kg of 0°C water is sprayed onto a fruit tree. How much heat will be released by the water as it freezes
The green block(B) has a mass of 10.00kg and is moving to the left at a speed of 3.70m/s. What should the velocity of the red block be in order to have the two blocks move to the right with a speed of 1.30 after the collision
When monochromatic light shines perpendicularly on a soap film (n = 1.33) with air on each side, What is the vacuum wavelength of the light in nm
The amount of charge that passes through a filament of a certain lightbulb in 1.76 s is 1.63 C. Find the current in the bulb
A small, 300 cart is moving at 1.90 on an air track when it collides with a larger, 1.00 cart at rest. After the collision, the small cart recoils at 0.890. Evaluate the speed of the large cart after the collision?
A child's water pistol shoots water through a 1.8 mm-diameter hole. If the pistol is fired horizontally 78 cm above the ground, the squirt hits the ground 1.8 m away. What is the volume flow rate through the squirt? Ignore air resistance.
An electron moves in a circular path perpendicular to a magnetic field of magnitude 0.270 T. find the speed of the electron and the radius of the circular path
Steam at 100°C is added to ice at 0°C. Find the amount of ice melted and the final temperature when the mass of steam is 11 g and the mass of ice is 53 g
Gven the relationship between angular frequency and wave number derived from some wave equation, determine whether the system is dispersive or nondispersive
The student throws a ball into the air along a path that he judges to make an initial angle of 59° with the horizontal and to be in line with the track. The student's professor, who is standing on the ground nearby, observes ball to rise verticall..
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