Recent content by brycenrg

Homework Statement 2-squareroot(16) = -2 Homework EquationsThe Attempt at a Solution Why is there not two answers? I thought the squareroot of something always has two answers.

Whoops, i mean series. Yeah I'm wondering why its better to make a solar panel with high voltage than high current. People prefer to put in series to get the higher voltage out of the system. Maybe it depends on the item? Oh sorry, so W = Joule/second , Wh = joule? makes sense now. Wh is total...

Thank you, isn't W and Wh the same thing but just Watt over that hour which gives it practical application? Ok so putting them in series or parallel doesn't effect the power. Interesting. Now I'm wondering why people prefer to use series to obtain higher voltage.

So I am trying to figure out how much Wh I would have with these solar cells I have. Each solar cell is rated to have 2.8w. Does this mean if I have 40 of them I would have 112 wh? I am going to be putting the solar cells in series. Does this affect the power? I know adding in series is good...

Good question, there are magnets that we are used to, these are called permanent magnets. The actual type of material gives them this property. There are also electromagnets which are more common, these produce the magnetic effect by induced electric current. If you have a electric stove...

Homework Statement The rms speed of molecules in a gas at 20.0C is to be increased by 2 percent. To what temperature must it be raised? Homework Equations Vrms = Squareroot((3kt)/m) The Attempt at a Solution vrms.02 + vrms = squareroot((3kt)/m) vrms(1.02) = squareroot((3kt)/m) Too many...

Thank you, Yeah i googled it but thought the Q's changed as well. So it didn't make sense. Sometimes i need someone to explain it to me like I am 5.

Thank you so, r is the only value that is changing?

Homework Statement F = k(Q2*Q1)/(r^2) Homework EquationsThe Attempt at a Solution I asked my teacher and he said that this is an inverse square law. Didn't say anything else. He also mentioned k is constant. I assume i can plug in random values and see if there is a pattern... k=1 for all Set...

The percent is the amount of Ag ions of the whole solution, pretty sure

Homework Statement An aqueous solution is found to be 0.0050% Ag+ ions. Calculate the ppm concentration of the solution. Homework Equations 1mg / 1 L The Attempt at a Solution 0.0050%/100 = 0.00005g Assuming there is 1 L of solution .00005g *(1/1000) 0.00000005 mg/L 1mg/L = 1 ppm...

Thank you :D

Yeah that was the question. Is it possible for a more powerful engine to get higher gas mileage? Or if not why is that? I just learned that it doesn't matter how fast you accelerate to the destination you will use the same amount of energy. But In my car if I punch the accelerator I get less...

Thank you, that makes perfect sense. So the reason we have difference fuel economy for cars is because air resistance.

The only equation I have learned so far is W = KEf-KEi I guess there is other equations I need to know to understand the question