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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 4.70 kg, and two thin crossed rods of mass 9.95 kg each. You would like to replace the wheels with uniform disks that are 5.25 cm 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?
Write a memo to the tax file discussing the facts
A small spinning asteroid is in a circular orbit around a star, much like the earth's motion around our sun. The asteroid has a surface area of 9.5 m2. calculate the equilibrium temperature of the asteroid
A compass needle in a uniform magnetic field of 0.25 T experiences a torque of 0.030Nm, What is the magnitude of the needle's magnetic moment
A box of mass 2.50kg is sliding at a constant speed down an inclined plane that is inclined at 25 degrees. What is the force of friction acting on the box
Time Value of Money Concept
Water moves through a constricted pipe in steady, ideal flow. At the lower point shown in the figure below, the pressure is P1 = 2.00 104 Pa, Find the volume flow rate through the pipe
The planet Jupiter has a satellite, Europa, which travels in an orbit of radius 6.710×108 m with a period of 3.55 days. Calculate the mass of Jupiter from this information
In the figure, block 1 of mass m1 slides from rest along a frictionless ramp from height h = 2.1 m and then collides with stationary block 2, which has mass m2 = 5m1. After the collision, block 2 slides into a region where the coefficient of kinetic ..
A 750g, 50-cm-long metal rod is free to rotate about a frictionless axle at one end. What is the rod's angular velocity immediately after the blow
A 5.3kg box is on a frictionless 36^\circ slope and is connected via a massless string over a massless, frictionless pulley to a hanging 1.6kg weight. A- What is the tension in the string if the 5.3kg box is held in place, so that it cannot move? B- ..
What is wavelength of the X-ray photon
An inductor has a 56.6-? reactance when connected to a 60.0-Hz source. What is the maximum current in the inductor
When light is incident on a surface the critical angle is 40.0 degrees. The two materials are air and glass. What is the polarization angle for this light
A merry-go-round with, radius 3 m rotates freely with an angular speed of 2/pi rev/s. Its kinetic energy is 4000 J. What is the final angular speed of the merry-go-round and the person after the person jumps on
A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.80{Hz}. Illustrate what is the mass of the fish, ignoring the mass of the spring.
in fresh water, sound travel at a speed of 1460m/s in the cold air sound travel in speed of 331m/s. how far is he from the site of the explosion
A dockworker applies a constant horizontal force of 85.0 N to a block of ice on a smooth horizontal floor. The frictional force is negligible. What is the mass of the block of ice
A tortoise and hare start from rest and have a race. As the race begins, both accelerate forward. What is the total time the hare is moving
A classmate throws a 1.3-kg book from a height of 1.2 m above the ground straight up into the air. Determine the velocity of the book just before hitting the ground
A proton is shot at 4 × 107 m/s toward a gold atom, with a mass 197 times that of the proton and deflects it straight back with 90% of its initial speed
question1a dock worker loading crates on a ship finds that a 22 kg crate at first at rest on a horizontal surface
A 500 ton jet is flying at an altitude of 30,000ft with a constant speed of 520mph. what is the total resistance force action on the jet
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