• A)Find the magnitude of force on each charge. B)Find direction of the force on each charge. Assume positive x-axis is directed to the right?

    Best answer: You don't give the position of the square, so I'll put its lower left corner at the origin. (B) The direction of the force on each charge is diagonal, away from the center of the square. The magnitude of the force on each charge is the same as the magnitude of the force on each of the other charges, so I'll calculate only... show more
    Best answer: You don't give the position of the square, so I'll put its lower left corner at the origin. (B) The direction of the force on each charge is diagonal, away from the center of the square. The magnitude of the force on each charge is the same as the magnitude of the force on each of the other charges, so I'll calculate only the magnitude of the force on the single charge at the origin. (A) The force due to the charge at (0.100, 0) is (9 x 10^9 Nm^2/C^2)(4.60 mC)^2/(0.100 m)^2 = 1.9044 x 10^7 N, directed in the negative x-direction. The force due to the charge at (0, 0.100) is 1.9044 x 10^7 N, directed in the negative y-direction. The force due to the charge at (0.100, 0.100) is (1.9044 x 10^7 N)/2, because the distance is greater by a factor of sqrt(2). This force (9.522 x 10^6 N) is directed diagonally into the 3rd quadrant. The sum of the forces due to the charges at (0,0.100) and (0.100,0) is also directed diagonally into the 3rd quadrant, and the magnitude of that sum is (1.9044 x 10^7 N)*sqrt(2) = 2.6932 x 10^7 N. So finally, the magnitude of the force on the charge at the origin is 2.6932 x 10^7N + 9.522 x 10^6 N = 3.645 x 10^7 N.
    1 answer · Physics · 8 hours ago
  • How many subsets of { 1, 2, 3, 4, 5, 6} have either 4 or 5 as their largest element? So your work.?

    The ones that have 4 as their largest element are 8 in number (because 1 and 2 and 3 are all either "in" or "out"). The ones that have 5 as their largest element are 16 in number (because 1 and 2 and 3 and 4 are all either "in" or "out"). So the total is 24.
    The ones that have 4 as their largest element are 8 in number (because 1 and 2 and 3 are all either "in" or "out"). The ones that have 5 as their largest element are 16 in number (because 1 and 2 and 3 and 4 are all either "in" or "out"). So the total is 24.
    6 answers · Mathematics · 13 hours ago
  • Math question . help please?

    Because there are four identical surfaces, the answer ought to be a multiple of 4. But, who knows... Each one of the four surfaces is a triangle with base 33m and height 39m. The area of each such surface is 643.5 m^2. If we don't have to worry about the shape of the shingles, then each side can be covered with 585 shingles. That would make... show more
    Because there are four identical surfaces, the answer ought to be a multiple of 4. But, who knows... Each one of the four surfaces is a triangle with base 33m and height 39m. The area of each such surface is 643.5 m^2. If we don't have to worry about the shape of the shingles, then each side can be covered with 585 shingles. That would make the answer 2340. The answer should probably really be larger, as the shingles themselves probably aren't triangular! But 2340 is the largest answer given, so use it.
    3 answers · Mathematics · 13 hours ago
  • The graph of the derivative, f '(x) is shown below. On what interval is the graph of f (x) concave up?

    Concave upward on (-1,+infinity), because f"(x) will be positive on that branch.
    Concave upward on (-1,+infinity), because f"(x) will be positive on that branch.
    2 answers · Physics · 13 hours ago
  • Use your knowledge of proportions to answer the questions below.?

    Height-to-head at 6 mos = 21/4.5 = 14 to 3. At 20, that would've given her a head of diameter (73*3)/14 = 15.6 in. Height-to-head at 20 yrs = 73/7.65 = 9.54. At 6 mos, that would've given her a height of (4.5")(9.54) = 43 in.
    Height-to-head at 6 mos = 21/4.5 = 14 to 3. At 20, that would've given her a head of diameter (73*3)/14 = 15.6 in. Height-to-head at 20 yrs = 73/7.65 = 9.54. At 6 mos, that would've given her a height of (4.5")(9.54) = 43 in.
    4 answers · Mathematics · 13 hours ago
  • CALCULUS HELP?

    When x is very large, the "25" can be neglected, and f(x) will be near 2. Ans: y = 2
    When x is very large, the "25" can be neglected, and f(x) will be near 2. Ans: y = 2
    4 answers · Mathematics · 13 hours ago
  • If g(x) = 2x - 7 and h(x) = ((x=4)/3), what is g(h(x))?

    2[(x+4)/3] - 7 = 2[(x+4)/3] - 21/3 = [2(x+4) - 21]/3 = (2x + 8 - 21)/3 = (2x - 13)/3.
    2[(x+4)/3] - 7 = 2[(x+4)/3] - 21/3 = [2(x+4) - 21]/3 = (2x + 8 - 21)/3 = (2x - 13)/3.
    4 answers · Mathematics · 13 hours ago
  • Do dairy cows have horns?

    Nearly 80% of US dairy cows have their horns removed each year, to protect their handlers and the other cattle. SOME have been bred to remain hornless.
    Nearly 80% of US dairy cows have their horns removed each year, to protect their handlers and the other cattle. SOME have been bred to remain hornless.
    3 answers · Zoology · 13 hours ago
  • What happens to mercury in a vacuum, or in Space?

    Vaporizes. But it's hard to find a phase diagram for mercury on the Internet, as searches involving "low pressure" and "mercury" typically turn up a lot of items where the mercury is simply the "measuring stick" (as in, 760 mm Hg).
    Vaporizes. But it's hard to find a phase diagram for mercury on the Internet, as searches involving "low pressure" and "mercury" typically turn up a lot of items where the mercury is simply the "measuring stick" (as in, 760 mm Hg).
    6 answers · Astronomy & Space · 13 hours ago
  • I need help with numbers 57 and 58?

    2 PCl3 --> 2P + 3Cl2. MgF2 + Br2 --> F2 + MgBr2. CaSO4 + 2KNO3 --> Ca(NO3)2 + K2SO4. CH4 + 2O2 --> CO2 + 2H2O. 2Na + Cl2 --> 2 NaCl. Reaction types: Decomposition, Single replacement, Double replacement, Combustion, Composition. BTW, the classification of reaction types depends what textbook they're using !
    2 PCl3 --> 2P + 3Cl2. MgF2 + Br2 --> F2 + MgBr2. CaSO4 + 2KNO3 --> Ca(NO3)2 + K2SO4. CH4 + 2O2 --> CO2 + 2H2O. 2Na + Cl2 --> 2 NaCl. Reaction types: Decomposition, Single replacement, Double replacement, Combustion, Composition. BTW, the classification of reaction types depends what textbook they're using !
    2 answers · Chemistry · 13 hours ago
  • I can't verify my solutions on Project Euler. How do I check to see if my solution is correct?

    Think of the numbers from 1 to 1000 as being organized in groups of 15. In each group of 15, there are 7 numbers that are multiples of 3 or 5. For the first 15, the sum is 3+5+6+9+10+12+15 = 60. For the next set of 15, each one is augmented by 15, so the sum will be 60+105 = 165. (Check: 18+20+21+24+25+27+30 = 165.) For the "nth" set... show more
    Think of the numbers from 1 to 1000 as being organized in groups of 15. In each group of 15, there are 7 numbers that are multiples of 3 or 5. For the first 15, the sum is 3+5+6+9+10+12+15 = 60. For the next set of 15, each one is augmented by 15, so the sum will be 60+105 = 165. (Check: 18+20+21+24+25+27+30 = 165.) For the "nth" set of 15, the sum will be 105n - 45. The 66th set of 15 ends at 990. The sum up to there will be the sum from n = 1 to 66 of (105n - 45) = 105(67*33) - 66*45 = 229185. Finally, a few numbers must be added on, namely, 993 + 995 + 996 + 999 = 3983. Add that to 229185, you get 233168. Looks a lot like your answer. One of us (you or me) has made a minor error. You can probably figure it out!.
    2 answers · Mathematics · 14 hours ago
  • (12x-15)/log4(16)= ? Please show steps to this problem TIA?

    log to the base 4 of 16 would be 2. So it looks like your expression would simplify to 6x - 7.5
    log to the base 4 of 16 would be 2. So it looks like your expression would simplify to 6x - 7.5
    5 answers · Mathematics · 14 hours ago
  • What is the radius of a sphere with center at the origin that passes trough point (2,3,4)?

    The distance from (0,0,0) to (2,3,4) is sqrt(4+9+16) = sqrt(29), and that's the radius.
    The distance from (0,0,0) to (2,3,4) is sqrt(4+9+16) = sqrt(29), and that's the radius.
    7 answers · Mathematics · 15 hours ago
  • What will happen to me in this situation?

    It's probably best if you break only his ankles. That way, you may be able to argue "self-defense."
    It's probably best if you break only his ankles. That way, you may be able to argue "self-defense."
    5 answers · Biology · 16 hours ago
  • CHEMISTRY HELP!!!!! EASY 10 PTS?

    The mass density of the gas is 10g/40L = 0.25 g/L. But you seem to be also asking about the grams per mole: n = pV/RT = (12 atm)(40 L)/[(0.08206 Latm/molK)*(300K)] = 19.50 moles. If 19.50 moles have a mass of 10g, the molar mass is 0.51 g/mol. But this is impossible, there is no such gas!!
    The mass density of the gas is 10g/40L = 0.25 g/L. But you seem to be also asking about the grams per mole: n = pV/RT = (12 atm)(40 L)/[(0.08206 Latm/molK)*(300K)] = 19.50 moles. If 19.50 moles have a mass of 10g, the molar mass is 0.51 g/mol. But this is impossible, there is no such gas!!
    2 answers · Chemistry · 16 hours ago
  • Need a help in # DIFFERENTIAL EQUATION # problem .....?

    It would be (0,5), because ln(x) is undefined at x = 0, and 1/(x-5) is undefined at x = 5.
    It would be (0,5), because ln(x) is undefined at x = 0, and 1/(x-5) is undefined at x = 5.
    2 answers · Other - Alternative · 16 hours ago
  • David’s car does 14 miles for every pound spent on fuel. To the neared penny, how much would it cost to travel 200 miles?

    (200 miles)/(14 miles/pound) = 14.29 pounds.
    (200 miles)/(14 miles/pound) = 14.29 pounds.
    4 answers · Mathematics · 16 hours ago
  • A container is filled with a gas, how will the following values change? (increase, decrease, stay the same)?

    Pressure increases. Volume stays the same (it's a container!). Moles increase. One cannot tell what will happen to the temperature, without knowing what was in the container before. Most likely, the temperature will increase because the pressure has increased.
    Pressure increases. Volume stays the same (it's a container!). Moles increase. One cannot tell what will happen to the temperature, without knowing what was in the container before. Most likely, the temperature will increase because the pressure has increased.
    3 answers · Chemistry · 17 hours ago
  • .500 kg of Ethel alcohol at 33°C are added to .500 kg of water at 22°C.What is the equilibrium temperature?(Ethyl alcohol=2450) (water=4186)?

    I suppose those final numbers are the heat capacities in J/(kgK). So you have (0.500 kg)(2450 J/kgK)(33 - T) = (0.500 kg)(4186 J/kgK)(T - 22) => 2450(33 - T) = 4186(T - 22) => 2450*33 + 4186*22 = 6636 T => T = 26C.
    I suppose those final numbers are the heat capacities in J/(kgK). So you have (0.500 kg)(2450 J/kgK)(33 - T) = (0.500 kg)(4186 J/kgK)(T - 22) => 2450(33 - T) = 4186(T - 22) => 2450*33 + 4186*22 = 6636 T => T = 26C.
    2 answers · Physics · 17 hours ago
  • What would you expect tosee for beaker A&B for followingproperties.BEAKER AvsBEAKER BConductivity,pH,Bromothymol blue,Reactionwithzinc,Taste?

    What are you talking about? We know nothing at all about "beaker A" and "beaker B."
    What are you talking about? We know nothing at all about "beaker A" and "beaker B."
    1 answer · Biology · 17 hours ago