Although sunspots are cooler areas in the photosphere, when they increase in number that tells us the Sun is becoming more active
Indicate whether the statement is true or false
TRUE
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Metric System: Express the number 13.5 gigameters in meters without using scientific notation.
A. 135,000 m B. 135,000,000 m C. 135,000,000,000 m D. 13,500,000,000 m
The Polynesian navigators of the South Pacific found their way primarily by observing the position of Polaris in the night sky
Indicate whether the statement is true or false
A proton that is initially at rest is accelerated through an electric potential difference of magnitude 500 V. How much kinetic energy does it gain? (e = 1.60 × 10-19 C)
A) 500 J B) 8.0 × 10-17 J C) 1.6 × 10-19 J D) 800 J
The formation of which of the following is not directly caused by erosive wave action?
a. Wave-cut cliffs b. Sea stacks c. Pocket beaches d. Sea caves