Prominences are extensions of the solar magnetic fields above sunspots
Indicate whether the statement is true or false
TRUE
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A 35 mm camera using a standard 50.0 mm lens is focused on a 1.80 m tall person who is standing 3.25 m from the lens. You now refocus the camera on a 15.0 cm tall flower that is 75.0 cm from the lens
(a) In refocusing, by how much did you move the lens? Did you move it toward the film or away from it? (b) What is the height of the flower's image on the film?
The Earth is 1.49 × 10^11 meters from the sun. If the solar radiation at the top of the Earth's atmosphere is 1340 W/m2, what is the total power output of the sun?
a. 7.10 × 10^27 W b. 2.20 × 10^30 W c. 6.62 × 10^26 W d. 3.74 × 10^26 W e. 2.98 × 10^25 W
In Europe, the combined Mississippian and Pennsylvanian periods are known as the
a. Carboniferous. b. Devonian. c. Pliocene. d. Tertiary.
A rocket with a mass of 500 grams is launched straight up. It achieves a velocity of 20.0 m/s in 2.00 seconds. The average thrust force of the engines on the rocket is
A. 7.50 N. B. 9.90 N. C. 12.0 N. D. 13.5 N. E. 20.0 N