What is the maximum efficiency of a heat engine operating between 293 Kelvins and 273 Kelvins, the temperatures at the surface and several hundred meters below the surface, respectively, of the ocean?
6.8%
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Seasons here are Earth are a result of
A) the rotation of our planet about its axis. B) the revolution of our planet around the Sun. C) the movement of our planet within the Milky Way. D) the tilt of Earth's axis.
Polymer products with a triangular three-arrow recycle symbol with the number 02 in the center are made of
(a) Polyethylene terephthalate (PET) (b) HDPE (c) PVC (d) PP
In geocentric theories, Earth is assumed to be the center of the solar system.
Answer the following statement true (T) or false (F)
The circuit below shows three resistors in series. R3 > R2 > R1. The resistors are all made of the same wire with the same diameter but have different lengths. Rank the magnitudes of the electric fields in the resistors from least to greatest
a.
E3 < E2 < E1.
b.
E2 < E1 = E3.
c.
E1 = E2 = E3.
d.
E1 = E3 < E2.
e.
E1 < E2 < E3.