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Two wheels have the same mass and radius of 4.3 kg and 0.52 m, respectively. One has (a) the shape of a hoop and the other (b) the shape of a solid disk. The wheels start from rest and have a constant angular acceleration with respect to a rotational axis that is perpendicular to the plane of the wheel at its center. Each turns through an angle of 13 rad in 8.3 s. Find the net external torque that acts on each wheel.
Dave Johnson, the bronze medalist at the 1992 Olympic decathlon in Barcelona, How far does his center of mass move up as he makes the jump
The aurora is caused when electrons and protons, moving in the earth's magnetic field of ?5×10?5 T, collide with molecules of the atmosphere, find Radius of the electron and proton in m
An LC circuit has a 7.88 mH inductor. The current has its maximum value of 0.73 A at t=0 s, What is the value of the capacitance
A 15.0-g metal cylinder is placed on a turntable, with its center 74 cm from the turntable's center. The coefficient of static friction between the cylinder and the turntable's surface is ?s = 0.74. A thin, massless string of length 74 cm connects..
An automobile tire is inflated with air originally at 10.0°C and normal atmospheric pressure. What is the tire pressure in pascals
A cart (821.7g) connected to a hanging mass (240g) is free to move on an incline plane with an angle of 15.3 degrees. Determine which way the hanging mass will move
Assuming all the energy is retained by the hammer head, evaluate how much will its temperature increase? (Chead=0.11 kcal/kg degrees C) 1/2 m v^2 = mc Deltatemp solve for deltaTemp.
In 1911, Ernest Rutherford discovered the nucleus of the atom by observing the scattering of helium nuclei from gold nuclei. If a helium nucleus with a mass of 6.68 10-27 kg.
A childs toy consists of a spherical object of mass 50 attached to a spring. What is the potential energy of the toy when the spring is compressed 3.5 from its equilibrium position
Nichrome is a nickel chromium allot commonly used in heating elements. suppose you have a coil of nichrome wire that is 25.0 m long, what is the resistance of the Nichrome wire
question1a single point charge q 1.85 microc is fixed at the origin. an imaginary spherical surface of radius 3.00 m
She wants glasses that will let her see objects at a distance of only 25 cm from her eyes. Examine the focal length of the glasses needed if the glasses are 2 cm and 3 cm from her eyes.
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