Some very hot rocks have a temperature of #190 ^o C# and a specific heat of #90 J/ (Kg*K)#. The rocks are bathed in #270 L# of boiling water. If the heat of the rocks completely vaporizes the …

What are the mean and standard deviation of a binomial probability distribution with #n=190 # and #p=7/11 #?

Feb 11, 2016 · When decaying by alpha emission a nucleus drops by 4 in mass number and 2 in atomic number and emits a helium nucleus (alpha particle) which has mass number 4 and …

Find the exact soultions on the interval from (-90degrees, 720degrees) cos3x=-sqrt3/2?

Dec 6, 2015 · #190 * color (blue) (T_"f") - 3800 = -1470 * color (blue) (T_"f") + 117600# #1660 * color (blue) (T_"f") = 121400 implies color (blue) (T_"f") = 121400/1660 = 73.13^@"C"# Now, …

x=+-sqrt(a-v) v=sqrt(a^2)-x^2 Apply square root rule sqrt(b^2)=b. v=a-x^2 Add x^2 to both sides. v+x^2=a Subtract v from both sides. x^2=a-v Take the square root of both sides. sqrt(x^2)=+ …

A teacher weighed 145 lbs in 1986 and weighs 190 lbs in 2007. What is the rate of change in pounds per year? A plane from Dallas to Boston flies 1,558 miles in 4 hours. About how many …

How would you prepare 250 mL of 0.158 M solution of #MgCl_2# from a 3.15 M stock solution? What is the concentration of a solution formed by diluting 190 mL of 18 M HCL solution to 730 …

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Q&A and Videos that make learning easy. Math, History, Chemistry, Algebra, Calculus, Biology and more.