If an ideal gas does positive work on its surroundings, we may assume, with regard to the gas
a. temperature increases.
b. volume increases.
c. pressure increases.
d. internal energy decreases.
b
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Explain why ships of any weight are balanced on the Falkirk Wheel
What will be an ideal response?
What was discovered in atomic spectra by physics pioneers Balmer, Rydberg, and Ritz?
A) unexplained randomness B) mathematical order C) all atoms are about the same size D) electrons occupy well-defined shells about the atomic nucleus E) electrons behave as standing waves
Two bulbs are shown in a circuit that surrounds a region of increasing magnetic field directed out of the page. When the switch is closed,
a.
bulb 1 glows more brightly.
b.
bulb 2 glows more brightly.
c.
both bulbs glow equally brightly.
d.
bulb 1 goes out.
e.
bulb 2 goes out.
Solenoid: Consider an ideal solenoid of length L, N windings, and radius b (L is much longer than b). A current I is flowing through the wire windings. If the length of the solenoid becomes twice as long (to 2L), but all other quantities remained the same, the magnetic field inside the solenoid will
A. remain the same. B. become twice as strong as initially. C. become one-half as strong as initially. D. become four times as strong as initially. E. become one-fourth as strong as initially.