Answer
3
Explanation:
x=
<em>t + 1/2 </em>
<em />
The answer is C
The colour that you see is what is being reflected and the colour that you don't see is what is being absorbed. In this case, you don't see any colour, so all wavelengths are being absorbed.
Answer:
a)COP = 1.67
b) W = 300 J
Explanation:
given,
refrigerator removes = 500 J from a cold reservoir
discharge = 800 J to its hot reservoir
a) COP =
COP =
COP = 1.67
b) heat per cycle exhausted to the
W + 500 = 800
W = 800- 500
W = 300 J
2N- if it is sliding at a constant velocity, the net force (total force)=0 so the applied force and friction force are equal to make 0
Hope's apparatus is a glass cylinder encircled with a trough half-way up to contain a freezing mixture. Holes in the cylinder at the top and the bottom allow thermometers to be inserted into the water to sample its temperature.
~From: Google http://physics.kenyon.edu/EarlyApparatus/Thermodynamics/Hopes_Apparatus/Hopes_Apparatus.html