On February 15, 2013, a superbolide meteor (brighter than the Sun) entered Earth’s atmosphere over Chelyabinsk, Russia, and expl
oded at an altitude of 23.5 km. Eyewitnesses could feel the intense heat from the fireball, and the blast wave from the explosion blew out windows in buildings. The blast wave took approximately 2 minutes 30 seconds to reach ground level. The blast wave traveled at 10° above the horizon. (a) What was the average velocity of the blast wave? (b) Compare this with the speed of sound, which is 343 m/s at sea level.
2 answers:
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A single electron has a charge of
Therefore, if we have an excess of
electrons, the total net charge will be the product between the charge of a single electron and the total number of electrons in excess:
Therefore, if we have an excess of
Answer:
Power will be 166.66 watt when the heater are connected in series
Explanation:
We have given power of the first heater = 490 watt
And power of the second heater = 250 watt
We know that in series connection potential difference will be same
So let the potential difference is v
Power is given by
So
Similarly
As resistances are connected in series so equivalent resistance
So power