The current in a 100-W bulb connected to a 120-V source is

A) 0.5 A.
B) 1.2 A.
C) 12,000 A.
D) none of the above


Answer: D

Physics & Space Science

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An “empty” steel barrel with its lid off has some gasoline remaining in the bottom, as shown. If the vapor pressure is 1 psia, estimate the evaporation rate of the gasoline and its vapor pressure half-way up in the barrel. Assume the mass diffusivity of gasoline into air is 0.0094 ft^2/s and assume that the vapor pressure of the gasoline is zero at the top.

Physics & Space Science

On a PV diagram representing an isothermal compression, what is the relationship between the initial P value and the final P value?

A. The initial is greater than the final B. The initial is less than the final C. They may be either – it depends on the temperature of the process D. They may be the same.

Physics & Space Science

The heat of formation of Jupiter was high enough to start a nuclear fusion reaction

Indicate whether the statement is true or false

Physics & Space Science

Equipotential surfaces around a point charge are

a. spherical. c. planar. b. cylindrical. d. none of these choices.

Physics & Space Science