What temperature increase is necessary to increase the power radiated from an object by a factor of 8?
a. 8 K
b. 2 K
c. 100%
d. about 68%
e. about 168%
d
You might also like to view...
A large cylindrical water tank is mounted on a platform with its central axis vertical. The water level is 3.75 m above the base of the tank, and base is 6.50 m above the ground
A small hole 2.22 mm in diameter has formed in the base of the tank. Both the hole and the top of the tank are open to the air. We can ignore air resistance and treat water as an ideal fluid with a density of 1000 kg/m3. (a) How many cubic meters of water per second is this tank losing? (b) How fast is the water from the hole moving just as it reaches the ground? What will be an ideal response?
In a vacuum where air resistance is zero, which variable below has no effect on the final falling velocity of an object?
If an R = 1.0-k? resistor, a C = 1.0-?F capacitor, and an L = 0.20-H inductor are connected in series with a V = 150 sin (377t) volts source, what is the maximum current delivered by the source?
a. 0.007 0 A b. 27 mA c. 54 mA d. 0.31 A e. 0.34 A
As a body falls through air starting from rest, its velocity
a. stays constant b. continuously decreases c. continuously increases d. gets larger and larger, eventually reaching a constant value e. gets smaller and smaller, eventually approaching zero