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a 5kg Potter's wheel (model as a disk) with radius 0.3m is spinning at 5 rad/s. The potter throws a piece of clay onto the wheel 0.1 m from the center. If the new angular speed of the wheel is 4.5 rad/s, what is the mass of the clas?
A typical photovoltaic cell delivers 4.0×10?3W of electric energy when illuminated with 0.11W of light energy. What is the efficiency of the cell
You have two weeks vacation and want to travel to a gambling space colony located 3.22 x 10^14 meters from Earth. how fast must you travel to accomplish this
An implanted pacemaker supplies the heart with 72 pulses per minute, each pulse providing 3.0 V for 0.95 ms, Find the current that flows during a pulse
Using a vernier caliper of least count 0.01 cm, the length of a cylinder is measured to be 3.76 cm, and its diameter 1.28 cm. 1-Find the volume of the cylinder. 2-Calculate the probable percent error in the length. 3-Calculate the probable percent..
the label on a soft drink states 15.fl oz (444g) provides 220 kcal. The drink is cooled to 15degree Celsius before it's consumed. Find net energy content of drink
A worker pulls horizontally on a crate on a rough horizontal floor, causing it to move forward with constant velocity. In the figure, force is the pull of the worker and force is the force of friction due to the floor.
The central star of a planetary nebula emits ultraviolet light with wavelength 104nm, What is the first-order diffraction angle
The linear coefficient of thermal expansion for concrete is 12x10^-6 ºC^-1. Consider a slab of concrete which is 4.0 m long at 0.0 ºC. What seems to be the primary safety concern in the lab
A certain atom of has 89 protons. Assume that the nucleus is a sphere with radius 7.25 fm and with the charge of the protons uniformly spread through the sphere. At the nucleus surface what is the magnitude of the electric field produced by the pr..
A capacitor is charged to a potential of 12.0 and is then connected to a voltmeter having an internal resistance of 3.10. estimate the time constant of the circuit
An athlete crosses a 29 m wide river by swimming perpendicular to the water current at a speed of 0.6 m/s relative to the water. How fast is the water flowing relative to the ground
An airplane is flying with a velocity of 82 at an angle of 25 above the horizontal. When the plane is a distance 125 straight above a dog that is standing on level ground, a suitcase drops out of the luggage compartment. How far from the dog will ..
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