Answer: resistance = 220 ohms
Explanation: given that
Power P = 55W
Current I = 0.5A
Potential difference V = 110V,
Using the formula
P = IV =V^2/R
55 = 110^2/R
R = 12100/ 55
R = 220 ohms
Hydrogen and oxygen are being formed if an <span>electric current is passed through water and bubbles start forming.
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Using the conservation of momentumwhere momentum = mass x velocity
so the let x be the initial velocity of the ball B
(30 kg) (-10 m/s) + (10 kg) (x) = (30 kg) (30 m/s) + ( 10 kg) (-10 m/s)
-300 + 10 x = 900 - 10010x = 900 - 100 + 30010x = 1100x = 1100 / 10x = 110 m/s
A). The apple has thermal energy, because its temperature is higher
than absolute zero.
It also has chemical energy, because if I eat it, I get a burst of energy
and I become ambitious for a while.
It also has gravitational potential energy, because if I drop it on my foot,
it could bruise one of my piggies.
b). I could increase its potential energy by lifting it higher, like over my head.
c). As long as I'm just holding the apple, it doesn't have any kinetic energy.
I could give it some kinetic energy by throwing it.
Or I could just drop it, and let gravity give it kinetic energy.
Math is not my strongest area. However, English poses no problems at all for me. You misspelled “wrap”. You buy gift wrap to wrap a gift. You buy an Eminem C.D. to listen to “rap” music. You “rap” on someone’s door.