An electron is carried from the positive terminal to the negative terminal of a 9 V battery. How much work is required in carrying this electron?
A) 1.6 × 10-19 J
B) 17 × 10-19 J
C) 9 J
D) 14.4 × 10-19 J
E) 14.4 × 10-19 J/C
D
You might also like to view...
Two balls, A and B, of mass m and 2m respectively, are carried to height h at constant velocity, but B rises twice as fast as A. The work the gravitational force does on B is
a. one quarter the work done on A. b. one half the work done on A. c. the same as the work done on A. d. twice the work done on A. e. four times the work done on A.
The following items are positioned in sequence: A source of a beam of natural light of intensity I0, three ideal polarizers A, B, and C; and an observer. Polarizer axis angles are measured clockwise from the vertical, as viewed by the observer
The axis angle of polarizer A is set at 0° (vertical), and the axis angle of polarizer C is set at 50°. Polarizer B is set so that the beam intensity is zero at the observer. What are the two possible axis angle settings (less than 180°) of polarizer B? A) 40° and 90° B) 40° and 130° C) 40° and 140° D) 90° and 130° E) 90° and 140°
Latent Heats: A beaker of negligible heat capacity contains 456 g of ice at -25.0°C. A lab technician begins to supply heat to the container at the rate of 1000 J/min. How long after starting will it take before the temperature starts to rise above 0°C? The specific heat of ice is 2090 J/kg ? K and the latent heat of fusion of water is 33.5 × 104 J/kg.
Fill in the blank(s) with the appropriate word(s).
The current in a long wire creates a magnetic field in the region around the wire. How is the strength of the field at distance r from the wire's center related to the magnitude of the field?
a. field directly proportional to r c. field directly proportional to r2 b. field inversely proportional to r2 d. field inversely proportional to r