Answer : The amount of heat absorbed are, 258485.5 J
Formula used :
Q = heat gained = ?
m = mass of water = 650 g
c = specific heat of water =
= final temperature =
= initial temperature =
Now put all the given values in the above formula, we get the final temperature of copper.
Therefore, the amount of heat absorbed are, 258485.5 J
answer: a tank of height h is filled with water and sits on the ground. water squirts from a hole at a height y above the ground and has a range r. for two y values, 0 and h, r is zero. determine the value of y for which the range will be a maximum.
on passing the small ampere of electric current through the tube made of ar and hg of cfl generates uv rays which excites the fluorescent and thus emits the high radiation by consumption of just 5- 12 w in comparison to incandescent light which requires more power such as around 40 - 55 w to lighten.
moreover the life span of fluorescent or cfl is around 8000 h whereas the life span of incandescent is around 1200 h
hence, the building installed with incandescent lights bears more electricity bill.