lim cos 2x

2022-03-18
Answered

lim cos 2x

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alenahelenash

Answered 2022-04-29
Author has **368** answers

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asked 2020-11-22

A 0.145 kg baseball pitched at 39.0 m/s is hit on a horizontal line drive straight back toward the pitcher at 52.0 m/s. If the contact time between bat and ball is $1.00\times {10}^{-3}$ s,calculate the average force between the bat and ball during contest.

asked 2020-11-05

A 292 kg motorcycle is accelerating up along a ramp that is inclined 30.0° above the horizontal. The propulsion force pushing the motorcycle up the rampis 3020 N, and air resistance produces a force of 250 N that opposes the motion. Find the magnitude of the motorcycles

asked 2021-01-19

In a truck-loading station at a post office, a small 0.200-kg package is released from rest a point A on a track that is one quarter of a circle with radius 1.60 m.The size of the packageis much less than 1.60m, so the package can be treated at aparticle. It slides down the track and reaches point B with a speed of 4.80 m/s. From point B, it slides on a level surface a distanceof 3.00 m to point C, where is comes to rest.

(a) What is the coefficient of kinetic friction on the horizontal surface?

(b) How much work is done on the package by friction as it slides down the circular arc from A to B?

asked 2021-04-06

Find the point on the plane $x+2y+3z=13$ that is closest to the point (1,1,1). How would you minimize the function?

asked 2022-04-24

Simultaneous Equations Finding the Intersection of a Cubic and a Quadratic

My functions are

$y=-0.65{(x-8.165)}^{2}+1.5(x-8.165)+6.872$

$y=0.08{(x-11)}^{3}-2.2(x-11)+5.9$

By using simultaneous equations and equating the functions to one another I've simplified it to the point where:

$0.08{x}^{3}-1.99{x}^{2}+14.7255x-27.608=0$

This had me stuck for a while but when I looked it up online I found I could use the Newton - Raphson Method to solve it.

I got the intercepts:$x=2.85281,x=10.98682,x=11.03536$

And although this helped me greatly, for the assignment I'm doing I won't be marked on using that method as we haven't been taught it and it's not on the criteria.

I'm just wondering if there is another method I can use that would get the same results.

My functions are

By using simultaneous equations and equating the functions to one another I've simplified it to the point where:

This had me stuck for a while but when I looked it up online I found I could use the Newton - Raphson Method to solve it.

I got the intercepts:

And although this helped me greatly, for the assignment I'm doing I won't be marked on using that method as we haven't been taught it and it's not on the criteria.

I'm just wondering if there is another method I can use that would get the same results.

asked 2022-05-28

If $A,B,C\in \mathbb{R}$ and $\mathrm{cos}(A-B)+\mathrm{cos}(B-C)+\mathrm{cos}(C-A)=-\frac{3}{2}\phantom{\rule{thickmathspace}{0ex}},$, Then

$\frac{\sum {\mathrm{cos}}^{3}(\theta +A)}{\prod \mathrm{cos}(\theta +A)}\phantom{\rule{thickmathspace}{0ex}},$ , Where $\theta \in \mathbb{R}$

$\frac{\sum {\mathrm{cos}}^{3}(\theta +A)}{\prod \mathrm{cos}(\theta +A)}\phantom{\rule{thickmathspace}{0ex}},$ , Where $\theta \in \mathbb{R}$

asked 2022-05-08

Answer the following True or False questions, explaining your reasoning in terms of the laws of thermodynamics where appropriate: (a) The quantities U, H, A, and G all have the same dimensions (i.e. expressed in the same units). (b) A(TS) = (AT)S+TAS. (c) The chemical potential µ¡ of a component i is a state function. d) The chemical potential of benzene must equal the chemical potential of toluene in a benzene-toluene mixture.