If a solar eclipse occurs today when might you have a chance to see a lunar eclipse?
A. in 27 days
B. in 11 days
C. in 21 days
D. in 15 days
in 15 days
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Why are sunsets and sunrises red?
A) The Sun emits more red light when it's near the horizon. B) Sunlight must pass through more atmosphere to reach our eyes at those times, so more blue light is scattered away. C) Sunlight must pass through more atmosphere to reach our eyes at those times, which means it passes through a larger volume of red air molecules. D) The lower temperatures of morning and evening (compared to midday) make the sky redder in color.
Helium fusion is sometimes referred to as the _______________ because three helium nuclei are needed to make a carbon nucleus, and because the helium nucleus is called an alpha particle
Fill in the blank(s) with correct word
Power: A series ac circuit containing a resistor, inductor, and a capacitor has a peak voltage of 116 V and a peak current of 2.00 A. If the current lags the voltage by 52.0°, what is the average power of the circuit?
A. 71 W B. 142 W C. 148 W D. 296 W
Relative Velocity: A 960-m wide river flows at 16 m/s as shown in the figure. Alice and John have a race in identical boats which each travel 20 m/s in still water. Alice leaves point A and steers so that she goes straight to point B directly across and then back to A. John leaves point A and steers up to point C (960 m upstream) and then returns to A.(a) Which person arrives back at point A first?(b) How much sooner than the loser does the winner arrive back at point A?
What will be an ideal response?