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An electric fan spinning with an angular speed of 16 rad/s has a kinetic energy of 3.9 J. What is the moment of inertia of the fan?
The circuit shown in the drawing is constructed with six identical resistors and an ideal battery. When the resistor R4 is removed from the circuit, Determine the resistance of each resistor
A refracting telescope is used to view the Moon (diameter 3480 km, distance from Earth 385,000 km). What is the diameter of the image produced by the objective
Four equal point charges, Q, are fixed at the corners of a squareof side b. (a) What is their total electrostatic potential energy?(b) How much potential energy will a fifth charge, Q, have at thecenter of the square (relative to V=0 at r =)?
The work function for iron is 4.50 eV. Find the cutoff wavelength for iron and What is the lowest frequency of light incident on iron that releases photoelectrons from its surface
A 100 W lightbulb is plugged into a standard 120V outlet. How much does it cost per month (30 days) toleave the light turned on continuosly?
Two plastic spheres, each carrying charge uniformly distributed throughout its interior, are initially placed in contact and then released, Find the maximum acceleration achieved by the sphere of mass 55.0g
If you twirl a small 7.0-g wooden ball in a circle at 4.0 revolutions per second on a light 10-cm string, approximately how many units of angular momentum does it have
a 13.4-kg block rests on a horizontal table and is attached to one end of a massless horizontal spring. by pulling
suppose you are driving on the interstate at 88 mph when you see a highway patrol car parked up ahead. you apply your
The magnetic flux through a circuit is reduced from 35 Tm^2 to 5 Tm^2 in 0.1s. The current induced in the circuit is 3.6 mA. What is the resistance to the circuit
three seconds after automobile b passes through the intersection shown automobile a passes through the same
Converting sunlight to electricity with solar cells has an efficiency of 15%. It's possible to achieve a higher efficiency (though currently at higher cost) by using concentrated sunlight as the hot reservoir of a heat engine. What is the theoreti..
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