• ### As a Beginning investor, would TD Ameritrade or Scotttrade be better?

I am planning to invest long term, not be a day trader. I also want to use a mobile app.
I am planning to invest long term, not be a day trader. I also want to use a mobile app.
4 answers · Investing · 2 months ago
• ### What do the points mean in the stock market (DOW, NASDAQ, S&P 500)?

Ex: S&P 500 is at 2,411.8. What does 2,411.8 mean and what does it translate to? I know 1 pt = 1 dollar. The S&P 500 can't be only 2,411.8 dollars.
Ex: S&P 500 is at 2,411.8. What does 2,411.8 mean and what does it translate to? I know 1 pt = 1 dollar. The S&P 500 can't be only 2,411.8 dollars.
3 answers · Investing · 2 months ago
• ### 1 million volts at 1 amp vs 7,200 volts at amp, would they do equal harm to the body?

They would both push 1 amp of current through the body, same path and duration. The amperage is the same, but the 1mv supply has 1MW of energy, vs the 7,200W. Is there much of a difference in the effects if you came onto contact with one vs the other one?
They would both push 1 amp of current through the body, same path and duration. The amperage is the same, but the 1mv supply has 1MW of energy, vs the 7,200W. Is there much of a difference in the effects if you came onto contact with one vs the other one?
2 answers · Physics · 5 months ago
• ### Will a high voltage shock feel much different (5Kv) compared to a low voltage shock (70v) if the current output is the same?

Ex: If I hooked up some TENS pads to my body, and I used a 5Kv@6ma unit (It doesn't exist, but lets just say they sold it too). The unit that I have is 70v@6ma. Will the 2 units effects differ much if the pads have good contact? Does the current flow affect the shock it gives you, or does the voltage make much of a difference as long as the... show more
Ex: If I hooked up some TENS pads to my body, and I used a 5Kv@6ma unit (It doesn't exist, but lets just say they sold it too). The unit that I have is 70v@6ma. Will the 2 units effects differ much if the pads have good contact? Does the current flow affect the shock it gives you, or does the voltage make much of a difference as long as the current and everything else is the same?
5 answers · Engineering · 5 months ago
• ### What are the odds of me winning the Mega Millions Jackpot 3x in a row?

If I only buy one ticket each win.
If I only buy one ticket each win.
1 answer · Mathematics · 7 months ago
• ### Why do football players have that "Puffy" look?

You know, you can look at them and tell they play football. Their neck, face is buff, but in a "puffed up" kind of way. Other athletes don't have that quality, at least not in the way that football players do. Power-lifters, weight lifters, body builders, basketball players don't have that feature. The closest athletes with that... show more
You know, you can look at them and tell they play football. Their neck, face is buff, but in a "puffed up" kind of way. Other athletes don't have that quality, at least not in the way that football players do. Power-lifters, weight lifters, body builders, basketball players don't have that feature. The closest athletes with that feature are some hockey players.
4 answers · Football (American) · 7 months ago
• ### Who is crazier, Poppy or Harley Quinn?

The Theatrical version of Harley Quinn. Poppy is the girl from YouTube. Poppy: https://www.youtube.com/watch?v=p4KFR_j8...
The Theatrical version of Harley Quinn. Poppy is the girl from YouTube. Poppy: https://www.youtube.com/watch?v=p4KFR_j8...
3 answers · Comics & Animation · 7 months ago
• ### Why is an electric current through the head so dangerous?

I know the brain is there, but what does it do? Even small currents are hazardous.
I know the brain is there, but what does it do? Even small currents are hazardous.
1 answer · Physics · 7 months ago
• ### In a lot of movies and with male models, why do they always clench their jaw?

Mainly masculine or "handsome" characters? Here's an example :https://s-media-cache-ak0.pinimg.com/564...
Mainly masculine or "handsome" characters? Here's an example :https://s-media-cache-ak0.pinimg.com/564...
3 answers · Movies · 7 months ago
• ### Why is an electric shock to the head or neck so dangerous?

You know those electrical pads that make your muscles contract? It warns you not to put it anywhere where the electricity will pass through the head or neck. Can it potentially be fatal if the current goes through the head or neck (even if the current is at a non-fatal level)?
You know those electrical pads that make your muscles contract? It warns you not to put it anywhere where the electricity will pass through the head or neck. Can it potentially be fatal if the current goes through the head or neck (even if the current is at a non-fatal level)?
1 answer · Pain & Pain Management · 7 months ago
• ### Does the output voltage of a car amplifier have an effect how loud a Subwoofer is?

Example: Measuring the output (speaker wires going to subwoofer), amp#1 feeds 40v and 100a to the sub (4,000w). If amp#2 feeds 400v and 10a to the sub (also 4,000w), how will the acoustic output (SPL, loudness) be affected? (I know the voltage is extreme, but its just an example for the sake of the question) Does the output amperage have more... show more
Example: Measuring the output (speaker wires going to subwoofer), amp#1 feeds 40v and 100a to the sub (4,000w). If amp#2 feeds 400v and 10a to the sub (also 4,000w), how will the acoustic output (SPL, loudness) be affected? (I know the voltage is extreme, but its just an example for the sake of the question) Does the output amperage have more effect on how loud it is than the output voltage, or does the output wattage alone matter, regardless of the volts/amps ratio?
1 answer · Car Audio · 8 months ago
• ### How does the number of turns in a transformer change the voltage?

I know the magnetic field reverses 120x a second (for 60hz), but how is the voltage value "carried over" to the other coil if amperes are the only cause of a magnetic field? How is the voltage "translated" to the other coil?
I know the magnetic field reverses 120x a second (for 60hz), but how is the voltage value "carried over" to the other coil if amperes are the only cause of a magnetic field? How is the voltage "translated" to the other coil?
2 answers · Physics · 8 months ago
• ### Why does a car audio amplifier put out 40 volts to the subwoofer instead of 12 or 14v?

If you measure the speaker wire terminals of a Class-D Amplifier that has 1,100w RMS, the voltage going to the speakers is 40v (should be 27 amps to get 1,100w). Why is that? Wouldn't 14v and 78 amps (same wattage) to the subs cause more thump, or is it only the wattage to the speakers that matter (regardless of volt/amp ratio)? Its a 1 ohm setup. show more
If you measure the speaker wire terminals of a Class-D Amplifier that has 1,100w RMS, the voltage going to the speakers is 40v (should be 27 amps to get 1,100w). Why is that? Wouldn't 14v and 78 amps (same wattage) to the subs cause more thump, or is it only the wattage to the speakers that matter (regardless of volt/amp ratio)? Its a 1 ohm setup.
4 answers · Car Audio · 8 months ago
• ### How is the wattage of a radio transmitter determined?

I didn't know how to word this question. Example: If I was to run a signal to the antenna (100v and 1A), that would be 100 watts of energy being emitted? Would the RF output be the same if the antenna's signal was run at 10v and 10A instead (also 100 watts)? Does there have to be a certain voltage/amp ratio in the electric current being... show more
I didn't know how to word this question. Example: If I was to run a signal to the antenna (100v and 1A), that would be 100 watts of energy being emitted? Would the RF output be the same if the antenna's signal was run at 10v and 10A instead (also 100 watts)? Does there have to be a certain voltage/amp ratio in the electric current being oscillated (fed) into the antenna?
2 answers · Engineering · 8 months ago
• ### Does voltage alone effect an electromagnets strength in any way?

For example, I have 2 identical electromagnets with the same number of turns and the same wire, core, everything the same. Electromagnet #1 is powered by a power supply putting out 100V DC and 10A. Electromagnet #2 is powered by a power supply putting out 10V DC and 10A (same current as #1). Since the amperage going through the coils are the same,... show more
For example, I have 2 identical electromagnets with the same number of turns and the same wire, core, everything the same. Electromagnet #1 is powered by a power supply putting out 100V DC and 10A. Electromagnet #2 is powered by a power supply putting out 10V DC and 10A (same current as #1). Since the amperage going through the coils are the same, and the electromagnets are identical, will the voltage alone have any effect on the strength of the electromagnet? If so, how?
1 answer · Physics · 8 months ago
• ### What would happen if I got zapped by a 3,200 volt MOT at 2 amperes?

Dual resonant Mots wired in parallel. I am safe around it, just want to know how powerful 2 amperes are.
Dual resonant Mots wired in parallel. I am safe around it, just want to know how powerful 2 amperes are.
2 answers · Physics · 8 months ago
• ### How does law enforcement identify suspects on video footage?

Ex: Surveillance cameras catching a bad shot of the suspects face, bad quality camera, even a good camera with a clear shot of his face (a robber of a store or something)
Ex: Surveillance cameras catching a bad shot of the suspects face, bad quality camera, even a good camera with a clear shot of his face (a robber of a store or something)
4 answers · Law Enforcement & Police · 8 months ago
• ### If I have to move back in with my mom, will people (girls) look down on me?

I'm 29 years old and live in the US. I live in a city.
I'm 29 years old and live in the US. I live in a city.
1 answer · Singles & Dating · 10 months ago
• ### How many cats can a man take on all at once in a fight?

House cats. No weapons. 220 lb guy, strong and knows how to fight and kill with his bare hands. Fight to the death.
House cats. No weapons. 220 lb guy, strong and knows how to fight and kill with his bare hands. Fight to the death.
3 answers · Polls & Surveys · 11 months ago
• ### Why am I only getting \$80 more (net) when I got a \$280 raise (gross)?

Monthly pay (monthly salary). I work for the State of Texas. I received a promotion. I'm making \$2,162/mo gross now.
Monthly pay (monthly salary). I work for the State of Texas. I received a promotion. I'm making \$2,162/mo gross now.
4 answers · Personal Finance · 11 months ago