## Circuit Lab B/C

UTF-8 U+6211 U+662F
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### Re: Circuit Lab B/C

Restarting... what force is exerted between two protons one meter apart?

krasabnk
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### Re: Circuit Lab B/C

UTF-8 U+6211 U+662F wrote:Restarting... what force is exerted between two protons one meter apart?

Using Coulomb's law and knowing protons are elementary charges.... F = (9x10^9)(1.6x10^-19)(1.6x10^-19) / (1)^2... Would the answer be 2.30x10-28 N?
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UTF-8 U+6211 U+662F
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Posts: 1476
Joined: January 18th, 2015, 7:42 am
Division: C
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### Re: Circuit Lab B/C

krasabnk wrote:
UTF-8 U+6211 U+662F wrote:Restarting... what force is exerted between two protons one meter apart?

Using Coulomb's law and knowing protons are elementary charges.... F = (9x10^9)(1.6x10^-19)(1.6x10^-19) / (1)^2... Would the answer be 2.30x10-28 N?

krasabnk
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State: NC

### Re: Circuit Lab B/C

C Only

Given this orientation of an operational amplifier, find the value of Rf (in kΩ) if the Vin = 20 mV, Rg = 3.8 kΩ, and Vout = 64 mV
(sorry for my bad drawing, haha)
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UTF-8 U+6211 U+662F
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Posts: 1476
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### Re: Circuit Lab B/C

krasabnk wrote:
Given this orientation of an operational amplifier, find the value of Rf in kΩ if the Vin = 20 mV, Rg = 3.8 kΩ, and Vout = 64 mV
(sorry for my bad drawing, haha)

I love this drawing

krasabnk
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### Re: Circuit Lab B/C

UTF-8 U+6211 U+662F wrote:I love this drawing

Thank you, haha!
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UTF-8 U+6211 U+662F
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### Re: Circuit Lab B/C

Simplify the following logical expression in terms of only AND and OR: XOR(A, XOR(B, AND(NOT(OR(A, B)), NOT(XOR(B, NOT(AND(A, A)))))))

wec01
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### Re: Circuit Lab B/C

UTF-8 U+6211 U+662F wrote:Simplify the following logical expression in terms of only AND and OR: XOR(A, XOR(B, AND(NOT(OR(A, B)), NOT(XOR(B, NOT(AND(A, A)))))))

I probably messed up somewhere but here is an attempt:
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UTF-8 U+6211 U+662F
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### Re: Circuit Lab B/C

wec01 wrote:
UTF-8 U+6211 U+662F wrote:Simplify the following logical expression in terms of only AND and OR: XOR(A, XOR(B, AND(NOT(OR(A, B)), NOT(XOR(B, NOT(AND(A, A)))))))

I probably messed up somewhere but here is an attempt:

Oops, I forgot to specify you could use NOT too. Looks right, your turn!

wec01
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### Re: Circuit Lab B/C

Suppose you find an LED whose datasheet contains the above graph. What value resistor should you put in series with this LED and a 5V power source in order to have a current of 20 mA going through the circuit.
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krasabnk
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State: NC

### Re: Circuit Lab B/C

wec01 wrote:
Suppose you find an LED whose datasheet contains the above graph. What value resistor should you put in series with this LED and a 5V power source in order to have a current of 20 mA going through the circuit.

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wec01
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### Re: Circuit Lab B/C

krasabnk wrote:
wec01 wrote:
Suppose you find an LED whose datasheet contains the above graph. What value resistor should you put in series with this LED and a 5V power source in order to have a current of 20 mA going through the circuit.

Not quite, but I see what you did:
Hint
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2nd place Thermodynamics

krasabnk
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Posts: 31
Joined: March 4th, 2018, 10:08 am
State: NC

### Re: Circuit Lab B/C

wec01 wrote:
krasabnk wrote:
wec01 wrote:
Suppose you find an LED whose datasheet contains the above graph. What value resistor should you put in series with this LED and a 5V power source in order to have a current of 20 mA going through the circuit.

Not quite, but I see what you did:
Hint

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wec01
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Posts: 185
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State: VA

### Re: Circuit Lab B/C

krasabnk wrote:
wec01 wrote:
krasabnk wrote:

Not quite, but I see what you did:
Hint

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4th place Fossils
5th place Sounds of Music
2nd place Thermodynamics

krasabnk
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Posts: 31
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State: NC

### Re: Circuit Lab B/C

Explain the mathematical difference between the Product of Sums and the Sum of Products procedures of Boolean expressions
Hint
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