A cook plugs a 500 W crockpot and a 1 000 W kettle into a 240 V power supply, all operating on direct current. When we compare the two, we find that
a. Icrockpot < Ikettle and Rcrockpot < Rkettle.
b. Icrockpot < Ikettle and Rcrockpot > Rkettle.
c. Icrockpot = Ikettle and Rcrockpot = Rkettle.
d. Icrockpot > Ikettle and Rcrockpot < Rkettle.
e. Icrockpot > Ikettle and Rcrockpot > Rkettle.
b
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A planar cross section through two spherical waves emanating from the sources S1 and S2 in the plane is shown in the figure. S1 and S2 are in phase. The black circles are one and two wavelengths from their respective sources. The lighter circles are one-half and one-and-a-half wavelengths distant from their respective sources. If the waves shown arriving at P1 both arrive with amplitude A, the resultant amplitude at point P1 is
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A.
B.
.C.
D.
.E.
How does the distance traveled vary with time in uniform linear motion? (Hint: Examine Eq. 4.1 in the Laboratory Guide.)
The distance between two successive ‘like' points on a wave is the wave's __________
Fill in the blank(s) with correct word
If a new force were discovered that had a range on the order of 10-18 meters: (a) predict the mass of the exchange particle. (b) how long is conservation of energy violated in the exchange of this particle?
What will be an ideal response?