Answer:
For 1 hour 75w light bulb requires 270 kj for burning
for 3 hours 75 w light bulb requires 270*3 = 810kj for burning
Explanation:
Answer:
e=hf conversion
hope it helps! stay safe as always!
Well what is part 2? but in general if we heat up two metals one the metal that has higher heat capacity and the other metal with lower heat capacity, the one with lower heat capacity gets hotter.
Answer:
Both are B. Hope this helps.
Is identical to the nucleus of a normal atomic mass four helium atom i.e. a doubly ionised helium atom