If a 100 watt light bulb burns for 60 minutes, how many joules of energy are consumed?
Choose one answer. a. 360,000 joules
b. 6.000 joules
c. 360 joules
d. 600 joules
e. 60 joules
2007-12-17 01:49:15 · 3 answers · asked by Thorn within a rose bush 1 in Science & Mathematics ➔ Mathematics
1 watt = 1 joule / sec
1 joule = 1 watt sec
100 x 3600 joules = 360,000 joules
OPTION a
2007-12-17 02:00:49 · answer #1 · answered by Como 7 · 3⤊ 1⤋
1 watt is the amount of power gained by expending 1 joule per second of energy.
A 100 watt light bulb expends 100 joules per second.
There are 3600 seconds in 60 minutes so the total is
100*3600 = 360,000 joules
This is answer a.
2007-12-17 09:54:04 · answer #2 · answered by Astral Walker 7 · 1⤊ 1⤋
Power (W)= Energy ( J ) / Time (s)
100 = Energy / 60x60
Energy = 360000 J
a. 360,000 joules
2007-12-17 09:53:35 · answer #3 · answered by Murtaza 6 · 0⤊ 1⤋