Monday
April 21, 2014

Posts by Icy


Total # Posts: 9

physics - energy question
ya thts rt . so h will be 0.187m

physics - energy question
A simple pendulum, 2.0 m in length, is released with a push when the support string is at an angle of 25° from the vertical. If the initial speed of the suspended mass is 1.2 m/s when at the release point, what is its speed at the bottom of the swing? (g = 9.8 m/s2). i don...

math of investment
An article cost $29885. To buy this article, a down payment of $3420 is needed.If interest charged is 16% compunded quarterly, how much should be paid at the end of every 3 months for 1 year in order to payoff the balance? please explain,i don't understand...thank you very...

Music
I was wondering about transposing. Suppose I had to transpose something that's written for piano (F major with one flat) to let's say Bb clarinet (G major with one sharp). My question is what method can I use to determine how many flats or sharps the second instrument ...

Calculus
1. Chris makes an open-topped box from a 30-cm by 30-cm piece of cardboard by cutting out equal squares from the corners and folding up the flaps to make the sides. What are the dimensions of each square to the nearest hundredth of a centimetre, so that the volume of the resul...

Calc
Determine the max & min of g(x) = x(x^2 - x^3)^3 Get the derivative of the function and set it to zero, then solve for x.

Calculus
Find the intervals on which y=1/(x^2+1)^2 is increasing and decreasing. find the first derivative which is -4x/(x^2+1)^3 you should know that if the first derivative is positive, then the function is increasing and if it is negative, the function is decreasing. Now by inspecti...

Calc
1. Determine an expression for dy/dt if x^2+2y^2=8 and dx/dt=3. 2. A point is moving along the right branch of a hyperbola defined by 4x^2-y^2=64. What is dy/dt when the point is at (5, -6) and dx/dt=3? I will start you on the first, using implicit differention. x^2+2y^2=8 2x ...

Calculus
Find the equation of the tangent line to the graph of f(x)= (8x^2-3)/(x^2+4) at the point where x=-1. Take the derivative of f(x). That gives you m, the slope. Then, y= mx + b Put in x,f(x) for x,y. Calculate b. I get it now. Thanks for your help!

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