One gram of water is heated from 0°C to 100°C at a constant pressure of 1 atm. Determine the approximate change in internal energy (in cal) of the water.
A. 160
B. 130
C. 100
D. 180
E. 50
Answer: C
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In going from Sa to Sc, the size of the ________ reduces significantly
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A point charge is located at the origin. Centered along the x axis is a cylindrical closed surface of radius 10 cm with one end surface located at x = 2 m and the other end surface located at x = 4 m. If the magnitude of the electric flux through the surface at x = 2 m is 4 N ? m2/C, what is the magnitude of the electric flux through the surface at x = 4 m?
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The Doppler effect can reveal the rotation speed of a star by the splitting of the spectral lines
Indicate whether the statement is true or false
The evolution of the distribution of dark and normal matter were____
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