Each atom in a mole of water vapor (H2O) has one electron removed. What is the total charge of the ionized gas?
A. 96 kC
B. 290 kC
C. 600 kC
D. 190 kC
B. 290 kC
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A projectile leaves the ground at 150 m/s and reaches a maximum height of 0.57 km. If there was no air, at what angle above the horizontal did it leave the ground?
What will be an ideal response?
Using graphical techniques estimate the temperature distribution through the earth around the electrical power line shown in Figure 2-62. Then estimate the heat transfer per unit length between the line and the ground surface.
Equilibrium: A 6.00-kg ornament is held at rest by two light wires that form 30° angles with the vertical, as shown in the figure. An external force of magnitude F acts vertically downward on the ornament. The tension exerted by each of the two wires is denoted by T. A free-body diagram, showing the four forces that act on the box, is shown in the figure. If the magnitude of force F is 410 N, what is the magnitude of the tension T?
A. 271 N B. 235 N C. 188 N D. 376 N E. 470 N
Which of the following is required for helium fusion as compared to hydrogen fusion?
A) much higher temperature B) much higher density C) a star of much greater mass D) a star that is much older in age