Two candles have equal length of . The first candle melts completely in time and the second one melts in time . The three distances , , shown in the figure are all equal. What are the speeds of the shadows on the screens A and B?
Attachments:
Answers
Answered by
0
》》Answer《《
=》 after 2 hours.
●● explanation ●●
=》
two candles of equal length are lit at the same time. one candle takes 6 hours to burn out and the other takes 3 hours. After how much time will the slower burning candle be exactly twice as long as the faster burning one? ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~Faster candle rate of burning is L%2F3 of its length per hour.Slower candle rate of burning is L%2F6 of its length per hour.The length of the remaining part for the faster candle is after t hours.The length of the remaining part for the slower candle is after t hours.The question asks about time t when Slower(t) = 2*Faster(t), or12 - 4t = 6 - t ---> 12 - 6 = 4t - t ---> 6 = 3t ---> t = 2.Answer. After 2 hours.
Similar questions