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A 140 ? lamp, a 25 ? electric heater, and a 57 ? fan are connected in parallel across a 137 V line.
1.) What total current is supplied to the circuit? (Answer in A)
2.) What is the voltage across the fan? (Answer in V)
3.) What is the current of the lamp? Answer in units of A
4.) What power is expended in the heater? Answer in units of W
A 1 pF capacitor is connected in parallel with a 2 pF capacitor, the parallel combination then being connected in series with a 3 pF capacitor. Which capacitor has the greatest charge
Two children fighting over a toy pull on the toy in different directions. One child pulls to the north with a force of and the other child pulls to the east with a force of What is the magnitude of net force on the toy.
A basketball star covers 2.6 m horizontally in a jump to dunk the ball. His motion through space can be modelled precisely as that of a particle at his center of mass. His center of mass is at elevation 1.02m when he leaves the floor. It reaches a..
A 5.0mL syringe has an inner diameter of 4.5mm , a needle inner diameter of 0.29mm, What is the minimum force the nurse needs to apply to the syringe
A candle is placed 1.270m in front of a converging lens. The image of the object is focused on a screen 1.376m behind the lens. What is the magnification of the image
Two point charges, q1 = -12.5 ?C and and q2 = +18.7 ?C, are placed at two of the corners of a right triangle with a = 23.5 cm, Find the magnitude of the electric field at the third corner of the triangle
Andy is waiting at the signal. As soon as the light turns green, he accelerates his car at a uniform rate of 8.00 meters/second2. What is the displacement of Andy's car
A Carnot engine operating between a warmer unknown temperature and a reservoir of boiling helium at 1.76 K has an efficiency of 75%. What is the warmer temperature
A plank 2.00 cm thick and 12.9 cm wide is firmly attached to the railing of a ship by clamps so that the rest of the board extends 2.00 m horizontally over the sea below. find the shear modulus of the wood
On a dry day, just after washing your hair to remove natural oils and drying it in detail, run a plastic comb through it. Small bits of paper will be attracted to the comb. Describe why.
How much would a 80.0 kg person weight on Mars, where the acceleration of gravity is 3.93 m/s^2, and on Earths Moon, where the acceleration of gravity is 1.63 m/s^2.
A useful model of a water molecule is sketched in the figure below, with point charges of 5.2 10-20 C at the H sites, What is the total electric potential energy of this model of a water molecule
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