The Kelvin temperature scale is based on the freezing point of water
a. True
b. False
Indicate whether the statement is true or false
False
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Equilibrium: A 120-kg refrigerator that is 2.0 m tall and 85 cm wide has its center of mass at its geometrical center. You are attempting to slide it along the floor by pushing horizontally on the side of the refrigerator. The coefficient of static friction between the floor and the refrigerator is 0.30. Depending on where you push, the refrigerator may start to tip over before it starts to slide along the floor. What is the highest distance above the floor that you can push the refrigerator so that it will not tip before it begins to slide?
A. 0.71 m B. 1.0 m C. 1.2 m D. 1.4 m E. 1.6 m
Charge of uniform surface density (0.20 nC/m2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2.0 m.
A. 17 N/C B. 11 N/C C. 23 N/C D. 28 N/C E. 40 N/C
A power transmission line 50. km long has a total resistance of 0.60 ?. A generator produces 100. V at 70. A
In order to reduce energy loss due to heating of the transmission line, the voltage is stepped up with a transformer with a turns ratio of 100:1. (a) What percentage of the original energy is lost when the transformer is used? (b) What percentage of the original energy would be lost if the transformer were not used?
An alpha particle (charge = +2e) is sent at high speed toward a gold nucleus (charge +79e). What is the electrical force acting on the alpha particle when it is at a distance of 2 × 10^?14 m away from the gold nucleus? (e = 1.6 × 10^?19 C)