The lunar maria are
a. the lava plains of the lunar lowlands.
b. the smooth plateaus of the lunar highlands.
c. less than one billion years old.
d. moving plates of lunar crust.
e. older than the lunar highlands.
a
You might also like to view...
Constant Angular Acceleration: An old LP record that is originally rotating at 33.3 rad/s is given a uniform angular acceleration of 2.15 rad/s2. Through what angle has the record turned when its angular speed reaches 72.0 rad/s?
A. 83.2 rad B. 316 rad C. 697 rad D. 66.8 rad E. 948 rad
Potential of Point-Charges: A +5.0-µC point charge is 12 cm from a -5.0-µC point charge. What is the magnitude of the electric field they produce at the point on the line connecting them where their electric potential (relative to infinity) is zero? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
A. 0 N/C B. 12.5 MN/C C. 0.75 MN/C D. 25 MN/C E. 1.5 MN/C
During a slow adiabatic expansion of a gas:
A. the pressure remains constant B. energy is added as heat C. work is done on the gas D. no energy enters or leaves as heat E. the temperature is constant
A sample of gas expands. Which of the following would not account for this?
1.The pressure on the gas increased. 2.The temperature of the gas increased. 3.The pressure on the gas decreased. 4.All of these could account for this.