Astronomers estimate the total number of comets in the solar system to be about
A) 100 million.
B) 1 billion.
C) 10 billion.
D) 100 billion.
E) 1 trillion.
E) 1 trillion.
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A 12.0-V battery (potential source) is connected across a 6.00-µF air-filled capacitor. (a) How much energy can be stored this way? (b) How much excess charge is on each plate of the capacitor?
What will be an ideal response?
The coefficient of linear expansion of copper is 17 × 10-6 K-1
A block of copper 30 cm wide, 45 cm long, and 10 cm thick is heated from 0°C to 100°C What is the change in the volume of the block? A) 2.3 × 10-5 m3 B) 4.6 × 10-5 m3 C) 5.2 × 10-5 m3 D) 6.9 × 10-5 m3 E) 13.8 × 10-5 m3
What is interesting about Jupiter's rotation period?
A) It is the same as Earth's. B) It is the same as its orbital period. C) It is the same as the Sun's. D) It is the slowest in the solar system. E) It is the fastest in the solar system.
If ? = 40°, ? = 60°, and M = 4.0 kg, determine the tension in string 1.
A. 15 N B. 22 N C. 17 N D. 20 N E. 36 N