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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The evolution of the distribution of dark and normal matter were____
a. both controlled by large differences in the cosmic microwave background radiation b. different because dark matter does not interact with electromagnetic forces c. different because dark matter does not interact with gravitational forces d. different because dark matter does not interact with weak nuclear forces e. different because dark matter does not interact with strong nuclear forces
In going from Sa to Sc, the size of the ________ reduces significantly
Fill in the blank(s) with correct word
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
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?
a. 1 N ? m2/C b. 2 N ? m2/C c. 4 N ? m2/C d. 16 N ? m2/C e. The correct value is not given.