I need help with can someone please help me.....
1. Determine how far electricity travels in 16 minutes. Express your answer in miles.
2. I think I have the answer to this, is it correct
5 7/10 - 3 14/15= 2 23/30
Thanks for the help..
2006-09-01 08:48:23 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
For problem 1, what does your book give for the velocity of electricity?
Problem 2: indeed, the common denominator is 30. You can subtract the wholes (5 - 3) but be careful: 7/10 < 14/15, so leave one. You get
4 - 3 = 1
1 7/10 - 14/15 = 51/30 - 28/30 = 23/30
The answer is 1 23/30. You were almost correct.
2006-09-01 08:51:31 · answer #1 · answered by dutch_prof 4 · 0⤊ 0⤋
in km/sec
electricity travels at about 300000 km/sec
so in 16 minutes it goes 16*60*300000 km
2) no wrong 5 - 3 = 2.
7/10 - 14/15 = 21/30 - 28/30 = - 7/30
thus total 2 - 7/30 = 1 23/30
2006-09-01 08:56:46 · answer #2 · answered by gjmb1960 7 · 0⤊ 0⤋
Current electricity travels at almost the speed of light. Nervous system impulses are around 200 mph.
2006-09-01 08:55:38 · answer #3 · answered by Scatman 5 · 0⤊ 0⤋
The 'usual' speed (in miles per second) for light/electricity is 186,000 miles/sec. So
186,000 miles/sec * 60 sec/min * 16 min = 178,560,000 miles
Dutch Prof has #2 nailed.
Doug
2006-09-01 08:59:14 · answer #4 · answered by doug_donaghue 7 · 0⤊ 0⤋
Try using a calculator.( don't know how that would help)
2006-09-01 08:56:25 · answer #5 · answered by >:o} 3 · 0⤊ 0⤋
STUDY and answer it yourself
2006-09-01 08:50:35 · answer #6 · answered by Anonymous · 0⤊ 0⤋