Advanced Placement (AP), 14.03.2020 00:14 rosie20052019

Which statement is true about nuclear fusion?
A)
It involves the splitting of a very large atom.
B)
It requires a fission reaction to power it.
C)
It produces lesser energy than nuclear fission.
D)
It powers the atomic bomb.
E)
It does not normally occur in nature.

Answers: 1

Show answers

Answers

Answer from: Quest

consider the following scenario, then describe how you might conduct a study using ansrs, convenience sample, and a voluntary response sample. you are interested in parents' opinion of the war in iraq. your population is parents of high school students. your question is, "do you believe that the war in

Answer from: Quest

correct answer for apex users would be /opportunities for growth/

Answer from: Quest

Answer: the interval on which the curve is concave up is (-∞, -1/2)====== $\displaystyle y = \int_{0}^x \frac{1}{1 + t + t^2} \; dt$ we find the interval where this curve is concave up by finding the interval in which the 2nd derivative is positive.differentiate the curve equation with respect to x $\begin{aligned} \frac{dy}{dx} & = \frac{d}{dx} \int_{0}^x \frac{1}{1 + t + t^2} \; dt \end{aligned}$ let the function f denote be the anti-derivative of the inside expression, i.e. a function such that $(d/dx)f(x) = 1/(1 + t + t^2)$ .then use the fundamental theorem of calculus: $\begin{aligned} \frac{dy}{dx} & = \frac{d}{dx} \int_{0}^x \frac{1}{1 + t + t^2} \; dt \\& = \frac{d}{dx} \big[ f(x) - f(0) \big] & & \text{\footnotesize apply ftc} \\ & = \frac{d}{dx}f(x) - 0 \\ & = \frac{1}{x + x + x^2} & & \text{\footnotesize since $\frac{d}{dx}f(x) = \frac{1}{1 + x + x^2}$ } \end{aligned}$ differentiate again to get second derivative. we can use chain rule with 1/x as the outside function and 1 + x + x² as the inside function $\begin{aligned} \frac{d}{dx} \left( \frac{dy}{dx} \right) & = \frac{d}{dx}\left(\frac{1}{1 + x + x^2} \right) \\ \frac{d^2y}{dx^2} & = \frac{-1}{\left(1 + x + x^2\right)^2} \cdot \tfrac{d}{dx}(1 + x + x^2) \\ & = \frac{-1}{\left(1 + x + x^2\right)^2} \cdot (1 + 2x) \\ & = \frac{-(1 + 2x)}{\left(1 + x + x^2\right)^2} \end{aligned}$ find critical numbers of the second derivative. these numbers are where the 2nd deriv. is undefined or zero.where the 2nd derivative is zero: set (d²y/dx²) to equal 0 and solve for x $\begin{aligned} 0 & = \frac{-(1 + 2x)}{\left(1 + x + x^2\right)^2} \\ 0 & = -(1+2x) \\ -1 & = 2x \\ x & = -1/2 \end{aligned}$ where the 2nd derivative is undefined: if the denominator is equal to zero, the derivative will be undefeined. attempting to solve the equation 1 + x + x² = 0results in a discriminant of $b^2 - 4ac = 1^2 - 4(1)(1) = -3$ meaning that the equal 1 + x + x² = 0 has no real solutions and therefore will never equal zero.======our only critical number is x = -1/2.this forms two intervals to test the sign for: (-∞, -1/2) and (-1/2, ∞)test values into the 2nd derivative for (-∞, -1/2)if we try x = -1, we get $\begin{aligned} \left.\frac{d^2y}{dx^2}\right|_{x = -1} & = \frac{-(1+2(-1))}{\left(1+(-1)+(-1)^2\right)^2} \\ & = \frac{-(1-2)}{1} \\ & = 1 \end{aligned}$ so the since the 2nd derivative of the curve is positive on the interval (-∞, -1/2), the curve is concave up on (-∞, -1/2)test values into the 2nd derivative for (-1/2, ∞)if we try x = 0, we get $\begin{aligned} \left.\frac{d^2y}{dx^2}\right|_{x = 0} & = \frac{-(1+2(0))}{\left(1+(0)+(0)^2\right)^2} \\ & = \frac{-(1)}{1} \\ & = -1 \end{aligned}$ so the since the 2nd derivative of the curve is positive on the interval (-∞, -1/2), the curve is concave down on (-∞, -1/2).the interval on which the curve is concave up is (-∞, -1/2)

Answer from: Quest

no we should not be nervous we should have that confident to do works and should have faith on own self hop u got answer

Another question on Advanced Placement (AP)

Advanced Placement (AP), 22.06.2019 04:00

How is organizing history by theme different from organizing history by region? a. a historian who organizes history by theme focuses on a specific individual, whereas a historian who organizes history by region focuses on a big idea over an extended length of time. b. a historian who organizes history by theme studies a specific time period, whereas a historian who organizes history by region studies a specific individual from human history. c. a historian who organizes history by theme studies a big idea that occurs over an extended length of time, whereas a historian who organizes history by region focuses on a specific length of time. d. a historian who organizes history by theme studies a big idea that occurs over an extended length of time, whereas a historian who organizes history by region focuses on a specific area of the world.

Answers: 1

Answer

Advanced Placement (AP), 24.06.2019 16:00

Julie’s psychologist her get over her fear of spiders. which goal of psychology has the psychologist met? a.describeb.predictc.controld.explain select the best answer from the choices providedabcd

Answers: 1

Answer

Advanced Placement (AP), 25.06.2019 03:50

Leia a charge e o texto a seguir: esse é o texto : a nova gestão escolar encontra-se centrada em aspectos fundamentais à consolidação de um clima organizacional favorável ao desenvolvimento das diferentes atividades que ela realiza. desses aspectos, destacamos a valorização e o investimento no capital humano, a conferência de autonomia e responsabilidades aos profissionais que integram as equipes educativas, o estímulo ao trabalho coletivo e a criação de espaços de diálogo. nesse sentido, verificamos que o clima exerce uma influência muito grande no comportamento e nos sentimentos dos professores e demais colaboradores em relação à organização escolar. relacione a charge ao texto e exemplifique clima organizacional. não se esqueça de organizar sua resposta em um parágrafo de pelo menos dez linhas, com argumentos bem fundamentados e estruturados, primando pela norma culta da escrita.

Answers: 1

Answer

Advanced Placement (AP), 26.06.2019 10:30

Which control would most likely achieve the greatest reduction of noise pollution? limiting airplane traffic insulating buildings and homes reducing road and highway traffic using headphones to listen to music building noise barriers beside highways

Answers: 1

Answer

You know the right answer?

Which statement is true about nuclear fusion?
A)
It involves the splitting of a very lar...

Questions