What are the three layers of the Sun's atmosphere, in order of increasing distance from the surface?
a. corona, chromosphere, photosphere
b. photosphere, corona, chromosphere
c. photosphere, chromosphere, corona
d. chromosphere, photosphere, corona
c
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An 8000 kg satellite is launched from the surface of the earth, and injected into a circular orbit at an altitude of 100 km above the surface of the earth. The gravitational potential energy of the satellite in the circular orbit is 
A. 
B. 
C. 
D. 
E. 
A quantity of ideal gas in a rigid container has a pressure of 1.00 × 10^6 Pa at 0°C. If the pressure is increased to 1.75 × 10^6 Pa, what is the temperature of the gas after this is done?
Why might increasing the temperature alter the rate of a chemical reaction?
A) The molecules will have a higher kinetic energy and bump into one another harder. B) The molecules are less reactive at higher temperatures. C) The molecules will more likely combine with other atoms at high temperature to save space. D) The density decreases as a function of temperature and this leads to an increase in volume which drops the rate of reaction. E) none of the above
The thermal conductivity of aluminum is twice that of brass. Two rods (one aluminum and the other brass) of the same length and cross-sectional area are joined together end to end
The free end of the brass rod is maintained at 0°C and the free end of the aluminum rod is maintained at 200°C. If no heat escapes from the sides of the rods, what is the temperature at the place where the two rods are joined together? A) 76°C B) 133°C C) 148°C D) 155°C