The rings around Uranus and Neptune are confined by shepherd satellites
a. True
b. False
Indicate whether the statement is true or false
True
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Which statement best describes the atmosphere of Venus? a. Similar to Earth, it contains mostly nitrogen and oxygen
b. Venus' atmosphere is high in carbon dioxide and considered a runaway greenhouse. c. Venus has a negligible atmosphere. d. Similar to Uranus, it contains mostly methane. e. Similar to Mercury, it has a thin atmosphere high in carbon dioxide.
Intensity: About 1350 W/m2 of electromagnetic energy reaches the upper atmosphere of the earth from the sun, which is 1.5 × 1011 m away. Use this information to estimate the average power output of the sun.
A. 1 × 1026 W B. 2 × 1026 W C. 3 × 1026 W D. 4 × 1026 W
A generator produces 60 A of current at 120 V. The voltage is usually stepped up to 4500 V by a transformer and transmitted through a power line of total resistance 1.0 ?
Find the percentage power lost in the transmission line if the voltage is not stepped up. A) 0.018% B) 0.036% C) 5.0% D) 25% E) 50%
Which is greater, the gravitational attraction between a newborn baby and the Earth, or the gravitational attraction between the Earth and all the planets of the solar system?
A) the attraction between the baby and Earth B) the attraction between the planets and Earth C) They are roughly equal. D) The baby's and the planets gravitational attractions are inversely proportional to each other.