Jerold
2021-02-18
Answered

A car’s rear windshield wiper rotates ${125}^{(}circ)$ The total length of the wiper mechanism is 25 inches and wipes the windshield over a distance of 14 inches. Find the area covered by the wiper.

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Aamina Herring

Answered 2021-02-19
Author has **85** answers

Given:

681.781-131.993=549.788

asked 2021-08-12

Three pipes, each of radius length 4 in., are stacked as shown. What is the exact height of the stack?

asked 2021-09-14

If the atomic radius of lead is 0.175 nm, calculate the volume of its unit cell in cubic meters

asked 2021-08-14

Two circles, whose radii are 12 inches and 16 inches respectively, intersect. The angle between the tangents at either of the points of intersection is $20}^{\circ},\text{}{30}^{\prime$ . Find the distance between the centers of the circle.

asked 2021-08-14

Five circles are placed in a rectangle as shown. If the length of the shorter side of the rectangle is 1, find the length of the other side.

asked 2022-08-12

I am trying to compute this integral ${\int}_{0}^{\mathrm{\infty}}\frac{x}{1+{x}^{6}}dx$ using the residue theorem. To do so, I am integrating $f(z)=\frac{z}{1+{z}^{6}}$ in the frontier of this sector of a circle: $\{z:|z|<R,0<arg(z)<\pi /3\}$.

I kwo how to deal with the integrals over the horizontal segment of the sector and over the arc of the circle. My problem is the "diagonal segment". When I parametrize it, I do not get something easy to integrate. How could I approach this?

(The path of integration was suggested in my book, so I do not think that is the problem).

I kwo how to deal with the integrals over the horizontal segment of the sector and over the arc of the circle. My problem is the "diagonal segment". When I parametrize it, I do not get something easy to integrate. How could I approach this?

(The path of integration was suggested in my book, so I do not think that is the problem).

asked 2022-04-06

Suppose I'm given two points: $({x}_{1},{y}_{1})$ and $({x}_{2},{y}_{2})$ (which are real numbers) lying on the circumference of a circle with radius r and centred at the origin, how do I find the arc length between those two points (the arc with shorter length)?

asked 2020-11-08

The square surface cover shown in the figure is 10.16 centimeters on each side. The knockout in the center of the cover has a diameter of 1.27 centimeters. Find the area of the cover to the nearest hundredth centimeter.