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a hair dryer operates at 1800 watts along with a 240 watt power resistor connected in series. Utilizing a 120 volt source, determine the follwoing....
a) the current I and total resistance R of the circuit
b) the individual resistance Ri and the voltage drop Vi across each compenent in the circuit
c) the cost of operating the circuit if it were left running for one week at a rate of 9.2 cents per KWH
The equations for free fall at the surface of Mars and Jupiter (s in meters, t in seconds) are Mars, s = 1.86t^2; Jupiter, s = 11.44t^2. How long would it take an object falling from rest to reach a velocity of 100 km/hr on each planet?
Team B is pulling on a rope attached to the same anvil with the same force but in direction of 32 degrees S of E. What is the initial acceleration of the anvil.
An object is placed 12.0 cm in front of a converging lens of focal length 5cm. A concave mirror with radius of curvature 20.00 cm is located 30.00 cm in back of the lens. (Refer to attached picture)
Guess scale factor of the Universe
A king orders a gold crown having a mass of 0.68 kg. When it arrives from the metalsmith, the volume of the crown is found to be 145 cm^3
What is the highest value of the magnetic force.
If coefficient of kinetic friction between the box and the floor is 0.570, how long does it take to move the box 4.00 m, starting from rest.
Suppose a car is traveling at +21.1 m/s, and the driver sees a traffic light turn red, What is the stopping distance of the car, as measured from the point where the driver first notices the red light
An archer shoots an arrow with a velocity of 45m/s at an angle of 50 degrees with the horizontal. An assistant standing on the level ground 150 m downrange from the launch point throws an apple straight up with the least initial speed required to ..
Two kilomoles of a monatomic ideal gas are at a temp of 300K. The gas expands reversibly and isothermally twice its original volume. Calculate the work done by the gas. (Note that for an ideal gas U is proportional to T, so the change of U = 0 in ..
The plates of a parallel-plate capacitor have a separation of 4.04mm , and each has an area of 15.4cm2 . Each plate carries a charge of magnitude 6.65×10?8C, What is the potential difference between the plates
What is magnitude of the unknown force
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