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3 years ago

According to the picture of the Electromagnetic spectrum [EMS] below, What color has a wavelength of 700 nm?

Physics

2 answers:

White raven [17]3 years ago

5 0

Answer:

Red

Explanation:

I looked at the picture...where it says red is 700

Alecsey [184]3 years ago

4 0

Answer:

red can i have brainlest

Explanation:

i did the test

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An open-end mercury manometer is connected to a low-pressure pipeline that supplies a gas to a laboratory. Because paint was spi

Svetllana [295]

Answer:

$P_G = 14.03 \ psig$

$h_m = 0.148 \ m$

Explanation:

From the question we are told that

The pressure of the manometer when there is no gas flow is $P_{m} = 15.5 \ psig = 15.5 * 6894.76 = 106868.78 \ N/m^2$

The level of mercury is $h = 950 \ mm = 0.950 \ m$

The drop in the mercury level at the visible arm is $d = 39.0 = 0.039 \ m$

Generally when there is no gas flow the pressure of the manometer is equal to the gauge pressure which is mathematically represented as

$P_g = P_m = g * \delta h * \rho$

Here $\rho$ is the density of mercury with value $\rho = 13.6 *10^{3} kg/m^3$

and $\delta h$ is the difference in the level of gas in arm one and two

$\delta h = \frac{106868.78}{ 13.6 *10^{3} * 9.8 }$

$\delta h = 0.802 \ m$

Generally the height of the mercury at the arm connected to the pipe is mathematically represented as

$h_m = 0.950 - 0.802$

=> $h_m = 0.148 \ m$

Generally from manometry principle we have that

$P_G + \rho * g * d - \rho * g * [h - (h_m + d)] = 0$

Here $P_G$ is the pressure of the gas

$P_G +13.6 *10^{3} * 9.8 * 0.039 - 13.6 *10^{3} * 9.8 * [0.950 - (0.148 + 0.039)] = 0$

$P_G = 9.6724 04 *10^{4} \ N/m^2$

converting to psig

$P_G = \frac{ 9.6724 04 *10^{4} }{6894.76}$

$P_G = 14.03 \ psig$

6 0

3 years ago

The gravity of Earth is attracting a person towards the center with 500N of gravitational force. The person is exerting a reacti

slavikrds [6]

Answer:

The force is being pulled my the gravity or it could be a third party thing like a black hole you feel me

Explanation:

8 0

3 years ago

A bolt is dropped from a bridge under construction, falling 97 m to the valley below the bridge. (a) how much time does it take

exis [7]

The first thing we have to do for this case is write the kinematic equationsto
vf = a * t + vo
rf = a * (t ^ 2/2) + vo * t + ro
Then, for the bolt we have:
100% of your fall:
97 = g * (t ^ 2/2)
clearing t
t = root (2 * ((97) / (9.8)))
t = 4.449260429
89% of your fall:
0.89*97 = g * (t ^ 2/2)
clearing t
t = root (2 * ((0.89 * 97) / (9.8)))
t = 4.197423894
11% of your fall
t = 4.449260429-4.197423894
t = 0.252

To know the speed when the last 11% of your fall begins, you must first know how long it took you to get there:
86.33 = g * (t ^ 2/2)
Determining t:
t = root (2 * ((86.33) / (9.8))) = 4.19742389 s
Then, your speed will be:
vf = (9.8) * (4.19742389) = 41.135 m / s

Speed just before reaching the ground:
The time will be:
t = 0.252 + 4.197423894 = 4.449423894 s
The speed is
vf = (9.8) * (4.449423894) = 43.603 m / s

answer
(a) t = 0.252 s
(b) 41,135 m / s
(c) 43.603 m / s

6 0

3 years ago

Which of the following is an example of a buoyant force acting on an object?

baherus [9]

Answer:

option c theobject floats on top of a fluid

3 0

3 years ago

Soil can best be described as the

mr Goodwill [35]

C. It is C because it really is loose covering.

7 0

3 years ago