A comet grows tails (plasma tail and dust tail) when it comes close to the Sun. Which of the following diagrams shows a comet's tails correctly oriented as they appear along its orbit?
Ans: Comets orbits lines are a vertical line opposing the sun
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Complete the equation: CH3C?CCH3 + 2 H2 ? ____________________
Fill in the blank(s) with correct word
If Q = 400 ?C and the potential difference VA ? VB = ?10 V in the circuit segment shown below, what is the current in the resistor?
a.
1.0 mA right to left
b.
1.0 mA left to right
c.
3.5 mA right to left
d.
3.5 mA left to right
e.
None of the above
A monatomic ideal gas at an initial temperature of 390 K is compressed adiabatically from an initial volume of 120 L to a final volume of 40.0 L. What is the final temperature of the gas?
A) 124 K B) 811 K C) 610 K D) 775 K E) 820 K
You ride a motor scooter 8 km in 15 minutes. Your [average] speed is
A) 16 km/hr. B) 2 km/hr. C) 4 km/hr. D) 32 km/hr. E) 48 km/hr.