Ask question

Ask question

All categories

4 years ago

5

In the doorknob shown above, when the handle is rotated a distance of 189 millimeters, the spindle is rotated a distance of 27 m

illimeters. What is the mechanical advantage of this doorknob? A. 7 B. 27 C. 189 D. 20

2 answers:

Alisiya [41]4 years ago

7 0

If my math is right its A) 7

because 189 divided by 27 is 7

Klio2033 [76]4 years ago

5 0

I’m thinking it’s A! Sorry if I’m wrong! :)

You might be interested in

What is a concern about recovered memories?

Fittoniya [83]

Answer:

D because those are both concerning.

4 0

3 years ago

Read 2 more answers

An atom of 6/2 He decays by beta decay. What atom is left after decay

olya-2409 [2.1K]

Answer:

6/3 LI

Explanation:

7 0

3 years ago

when the color purple is reflected off a hat, what can we say is happening to the light waves?

pochemuha

That every wave length of light except purple is being absorbed by the hat. The hat will be the color purple

6 0

3 years ago

Read 2 more answers

a wave's amplitude is 0.5 meters. if its amplitude is increased to 1 meter, how much does its energy change?

AfilCa [17]

The energy becomes 4 times greater.

5 0

3 years ago

A helix with 17 turns has height H and radius R. Charge is distributed on the helix so that the charge density increases like (i

marishachu [46]

The total charge on the helix is

Q = $\frac{221}{2}\sqrt{(\frac{H}{17})^2+(2\piR)^2$

Height of one turn = $\frac{H}{n}$

Horizontal distance in one turn = $2\pi R$

<h3>length of spring in one turn is</h3>

$l = \sqrt{h^2+(2\piR)^2}\\\\
l = \sqrt{(\frac{H}{n})^2+(2\piR)^2}
$

So, the total length of spring

$L = n*l\\\\
L = n * \sqrt{(\frac{H}{n})^2+(2\piR)^2}
$

Therefore, charge on spring

$Q = \frac{1}{2}*L*(13-0)\\\\
Q = \frac{1}{2}*n\sqrt{(\frac{H}{n})^2+(2\piR)^2}*13\\\\
Q = \frac{1}{2}*17*13\sqrt{(\frac{H}{17})^2+(2\piR)^2}\\\\
Q = \frac{221}{2}\sqrt{(\frac{H}{17})^2+(2\piR)^2\\\\
$

For more information on linear charge density, visit

brainly.com/question/15359786

8 0

2 years ago