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zeig_101
 2 years ago
*reward: 1 medal for answers*
1) If the current in a wire is at 0.5 A and the voltage is measured at 100 volts, what is the resistance in the wire?
2)What is the electric power used by an appliance if the current is 2 A and the voltage is 50 volts?
3)How are sound waves produced, and what impacts do different types of matter have on the speed of the wave?
4)What is the electromagnetic spectrum? Explain and give an example.
5)
http://img254.imageshack.us/img254/6528/459431120201182932am187.png
In the figure shown, how could you determine the wavelength?
6)Explain how you can quickly determine whether a string of lights is wired in series or in parallel.
zeig_101
 2 years ago
*reward: 1 medal for answers* 1) If the current in a wire is at 0.5 A and the voltage is measured at 100 volts, what is the resistance in the wire? 2)What is the electric power used by an appliance if the current is 2 A and the voltage is 50 volts? 3)How are sound waves produced, and what impacts do different types of matter have on the speed of the wave? 4)What is the electromagnetic spectrum? Explain and give an example. 5) http://img254.imageshack.us/img254/6528/459431120201182932am187.png In the figure shown, how could you determine the wavelength? 6)Explain how you can quickly determine whether a string of lights is wired in series or in parallel.

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zeig_101
 2 years ago
Best ResponseYou've already chosen the best response.0See, I dont know how to use Ohm's law

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2For number one, I=0.5 and V=100

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2so you just back substitute the numbers in: (0.5)=100/R Next you isolate R. 0.5R=100 R=200

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2It's not a variable. If it helps you, use Amps instead of A

zeig_101
 2 years ago
Best ResponseYou've already chosen the best response.0Ok, I don't get this can you walk me through it?

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2Okay. We know that I=V/R. We also know that I=0.5Amps and V=100Volts Do you follow?

zeig_101
 2 years ago
Best ResponseYou've already chosen the best response.0What do the things in I=V/r mean?

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2It's a relationship between current, voltage, and resistance. I is a variable that represents current. V is a variable that represents voltage. R is a variable that represents resistance. We usually give these measurements in Amperes (A), Volts (V) and Ohms (omega), respectively.

zeig_101
 2 years ago
Best ResponseYou've already chosen the best response.0ok, so its really C=V/R?

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2We don't use C for current. We use I. This is out of habit, so use I okay?

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2(In mathematics we often encounter constants and we represent them with C's. If we used C for current it would be confused with other values and would not be clear). BUt essentially yes, the relationship is I=V/R

zeig_101
 2 years ago
Best ResponseYou've already chosen the best response.0now where do i go from there?

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2Multiply both sides by R.

zeig_101
 2 years ago
Best ResponseYou've already chosen the best response.0What is the electric power used by an appliance if the current is 2 A and the voltage is 50 volts? I=V/r 2=50/r 2r=50 r=100?

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2btw, the units for the resistance are in ohms.

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2sorry they are different formulas.

zeig_101
 2 years ago
Best ResponseYou've already chosen the best response.0What is the electric power used by an appliance if the current is 2 A and the voltage is 50 volts? P=I*V? P=2A*50V P=100?

inkyvoyd
 2 years ago
Best ResponseYou've already chosen the best response.2Do you need help with the rest?
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