When the Martian springtime arrives and the daytime temperature reaches 20°C, what occurs?
a. Water melts and forms large pools of liquid.
b. The polar ice caps disappear.
c. Large planet-wide dust storms.
d. The entire planet changes color.
c. Large planet-wide dust storms.
You might also like to view...
Capacitance: When the magnitude of the charge on each plate of an air-filled capacitor is 4 ?C, the potential difference between the plates is 80 V. What is the capacitance of this capacitor?
A. 0.1 µF B. 50 µF C. 100 µF D. 20 µF E. 50 nF
Work: Two men, Joel and Jerry, push against a car that has stalled, trying unsuccessfully to get it moving. Jerry stops after 10 min, while Joel is able to push for 5.0 min longer. Compare the work they do on the car.
A. Joel does 75% more work than Jerry. B. Joel does 50% more work than Jerry. C. Jerry does 50% more work than Joel. D. Joel does 25% more work than Jerry. E. Neither of them does any work.
A negatively-charged particle is slowly moving as it enters a region that has a constant magnetic field. If the velocity of the particle is initially parallel to the magnetic field, what will be the subsequent motion of the particle?
a) It will follow a helical path around the magnetic field lines. b) It will follow a circular path in the plane perpendicular to the magnetic field lines. c) It will follow a straight line path in the same direction as it was initially traveling. d) It will follow a circular path in a plane parallel to the magnetic field lines. e) It is impossible to predict the path the particle will follow.
Which type of quantity is characterized by both magnitude and direction?
a. scalar c. trigonometric b. vector d. algebraic variable