Physics
Energy = Power*time Power = I^2*r = I*V = 1.5*1.2 5 * 10^3 = 1.5*1.2*time solve for time. Your answer will be in the SI units of seconds; divide this answer by 60 sec/min to convert the answer to minutes
computer science
You're going to have to look up the functions in the particular language you're working with to learn how to store arrays, select elements of the array, and print statements.
Chemistry
Calcium propanoate or calcium propionate has the formula Ca(C2H5COO)2 . . . try using your textbook to look up the chemical formulas for the other reactants involved in these equations. . . such as hydrogen chloride and anhydrous ethanoic acid. Then research how these compound...
maths
I imagine you're supposed to solve for the missing variables. I'll do a couple so you get the idea. 1) 2a - a/5 = 2/3 adding like terms: 1.8 a = 2/3 9/5 a = 2/3 a = 10/27 2) 3(a+4)+1 = a/2 3*a + 12 + 1 = a/2 3*a + 13 = a/2 13 = -2.5a a = 13/-2.5 . . .
Algebra 1- Math
2x - y = -4 -3x + y = -9 From the first equation: y = 2x + 4 Substitute this into the second equation: -3x + 2x + 4 = -9 -x + 4 = -9 -x = -13 x = 13 Then plug this answer back into the first equation 2*13 - y = -4 26 - y = -4 -y = -30 y = 30
Chemistry
You need to calculate the equilibrium constant K, which for C would be ([H2BO3-]*[CO3 2-]) / ([HCO3-]*[HBO3 2-]) Look up the equilibrium concentrations [] of the various compounds, and solve. If K > 1, products are favored. If K is less than 1, than reactants are favored
help
First, plot the parallelogram on graphing paper. Next, calculate the length of each side using the formula for the distance between 2 points (x1, y1), (x2, y2): ((x1-x2)^2 + (y1-y2)^2)^0.5 Then calculate the slope of each line passing through these two points: slope = (y2-y1)/...
geometry
why don't you try getting out your compass, following each of the student's steps, and see which one yields a parallelogram PQRS?
Math
Let P be the principal invested. The amount at the end of four years will be for each scenario 1: P*(1+0.0225/2)^(4*2) 2: P*(1+0.0225/4)^(4*4) 3: P*(1.0195^4)
statistics
I. 71. The mode, by definition is the answer that appears most frequently. II. The midrange is 64, which is by definition the arithmetic mean of the largest and the smallest values in a sample or other group. The range is 55. Let H = highest score, and L = lowest score. Then,...
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