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A solid cylindrical disk has a radius of 0.20 m. It is mounted to an axle that is perpendicularto the circular end of the disk at its center. When a 30 N force is applied tangentially to the disk, perpendicular to the radius, the disk acquires an angular acceleration of 150 rad/s2.What is the mass of the disk?
One mole of an ideal diatomic gas is heated from a temperature of 22 degrees C to a temperature of 95 degrees C. How much heat in joules must be supplied if the volume is kept constant during heating?
A 60kg pole vaulter running at 13m/s vaults over the bar. Her speed when she is above the bar is 0.7m/s. Neglect air resistance, as well as any energy absorbed by pole, and determine her altitude as she crosses the bar.
a charged particle (q=1.6*10^-19C) enters a mass spectrometer with a speed of 2.5*10^6m/s, compute the mass of the charged particle
A potter's wheel having a radius 0.47 m and a moment of inertia 10.9 kg•m2 is rotating freely at 46 rev/min. The potter can stop the wheel in 7.0 s by pressing a wet rag against the rim and exerting a radically inward force of 68 N. Find out the effe..
If the wire is heated to 36.0°C while the 7.0-V potential difference is maintained, what is the resulting current in the wire
Eight 6.5 -W Christmas tree lights are connected in series to each other and to a 120 -V source. What is the resistance of each bulb
An elevator (mass 4600 ) is to be designed so that the maximum acceleration is 0.0650 What is the maximum force the motor should exert on the supporting cable
On the Apollo 14 mission to the moon, astronaut Alan Shepard hit a golf ball with a golf club improvised from a tool. The acceleration free-fall on the moon is 1/6 of its value on earth
can a person in principle travel from earth to the galactic center which is about 2.30times104 lightyears distant in a
When a container is filled to the brim with liquid, what happens when the temperature rises? You are doing a controlled experiment on a strange, liquid metallic substance. What is the volume of fluid metal that overflows
A spring has k = 96 Nm. use a graph to determine the work needed to stretch it from x=3.8 cm to x=6.1cm, where x is the displacement from its unstretched length.
John measured the thickness of a book using a measuring stick. Calculate the standard deviation of the mean
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