A current carrying circular loop of wire lies flat on a table top. When viewed from above, the current moves around the loop in a counterclockwise sense
What is the direction of the magnetic field caused by this current, inside the loop? The magnetic field A)
circles the loop in a clockwise direction.
B)
circles the loop in a counterclockwise direction.
C)
points straight up.
D)
points straight down.
E)
points toward the east.
C
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The heat of fusion for silver at 960.8is 88.3 kJ/kg and the specific heat of silver is 0.235 kJ/kg
What is the energy needed to melt 100 grams of silver starting at 0
?
A. 40.5 kJ B. 31.4 kJ C. 25.4 kJ D. 19.5 kJ E. 13.7 kJ
The specific heat of steam is 2,020 J/kg K in the mks system of units. What is the value of the specific heat of steam in cal/gm ?
A. 1.000 B. 0.8765 C. 0.6812 D. 0.4826 E. 0.2563
Are small ripples sent out across the surface of a lake truly "waves", as that word is used in physics?
A) Yes, because the water itself doesn't go anyplace but simply oscillates up and down. B) No, because true water waves are longitudinal. C) Yes, because the water itself moves across the lake, away from the source of the wave. D) No, because the water's motion is "mass motion", similar to the motion of a ball that has been thrown. E) No, because the water itself doesn't go anyplace but simply oscillates up and down in one place.
What is the temperature of a system in thermal equilibrium with another system made up of ice and water at one atmosphere of pressure?
a. 0°F c. 0 K b. 273 K d. 100°C