Physics
Physics Help!!!!! Maximum Kinetic Energy based on a graph? A 2.50kg ball is attached to an unknown spring and allowed to oscillate. The figure shows a graph of the ball’s position x as a function of time t.(Figure 1) Part A: What is the maximum kinetic energy of the vibra...
U.S/history AP
Hi, what are evidence of the 2 superpowers in the cold war.
statistics
Given that the general population is normally distributed on a standard scale measuring math aptitude with Mean = 50 (s.d. = 10), approximately what percentage of the population has a math aptitude score between 40 and 60?
Calc
Find the area between the x axis and the graph of y = (2e^x)/(1+e^(2x)) a. e^2 b. pi c. pi/2 d. 2pi d. none of the above
Calc
Calculate the area under the curve y=e^-x above the x axis on the interval [1, infinity). a. infinity b. 0 c. -1/e d. 1/e e. none of the above
Calc
Evaluate the integral or show that it diverges: Integrand 0, lower, to 3, upper, (1/x)dx. a. infinity b. negative infinity c. 0 d. ln 3 e. none of the above
Calc
Find the limit as x approaches 0: (e^x^2-1)/(2x^2) a. 0 b. 1/2 c. infinity d. does not exist e. none of the above
Calc
Evaluate the integral (3x+4)/[(x^2+4)(3-x)]dx a. (1/2)ln(x^2+4) + ln|3-x| + C b. (1/2)arctan(x/2) + ln|3-x| + C c. (1/2)arctan(x/2) - ln|3-x| + C d. ln|(sqrt(x^2+4)/(3-x))| + C e. None of the above
Calc
Compute the average value of f(x) = x/(x+3) over the interval [-a,a], 0 < a < 3. a. 1 + (3/2a)ln[(3-a)/(3+a)] b. 2a + 3ln[(3-a)/(3+a)] c. 3/(9-a^2) d. 1/(2a) e. None of the above
Math
93*3^2-6^2-4^3
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