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siniylev [52]
3 years ago
11

Why is the HR diagram important to scientists?

Physics
2 answers:
katovenus [111]3 years ago
6 0
A. yeah is A. i bet my wifes life on
VashaNatasha [74]3 years ago
5 0

Answer:

the answer is not A. its D

Explanation:

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Use the information and diagram to answer the following question.
Mumz [18]

Answer:b

Explanation:

Because I don’t know

8 0
3 years ago
A boxed 12.0 computer monitor is dragged by friction 7.50 up along the moving surface of a conveyor belt inclined at an angle of
sasho [114]
Thank you for posting your question here at brainly. I hope the answer will help you. Feel free to ask more questions here.

Below is the solution:

W done by Normal = 0. (make the incline flat, Normal force goes directly up: no work done) 
<span>W done by gravity = w*displacement = (11kg*9.8) * 7.5sin(35) = -463J </span>
<span>W done by friction is the opposite of the work done by weight because the object is not moving. Therefore W done by friction = 463J</span>
8 0
4 years ago
A strip of copper 150 μm thickand 4.5 mm wide is placed in a uniform magnetic field B (vector) ofmagnitude 0.65 T, with B (vecto
kykrilka [37]

Answer:

V_H=7.3544\times 10^{-6} \,V

Explanation:

Given that:

thickness of the metal strip, d=150\times 10^{-6} m

width of the metal strip, w=4.5\times 10^{-3}m

magnitude of the perpendicular magnetic field, B=0.65 \,T

current through the strip, I=23\,A

charge density, n=8.47\times 10^{28} \,electrons\,per\,m^3

Hall voltage is a transverse voltage given by:

V_H=\frac{I.B}{n.e.d}

putting the respective values

V_H=\frac{23\times 0.65}{(8.47\times 10^{28})\times 1.6\times 10^{-19}\times (150\times 10^{-6} )}

V_H=7.3544\times 10^{-6} \,V

Note:

V = E d is used when a charge is moved in a uniform electric field between the two oppositely charged plates, it can't be used here because it is the case of Hall effect where the small voltage develops transverse  to the direction of current flow.

6 0
3 years ago
PLZ HELP ITS A TIMED TEST!!!!!!!!!!!!!!!!
sergij07 [2.7K]
Image #3 good luck!!!!!!!!!!!
7 0
3 years ago
Value of mass of a body is fixed everywhere. true or false<br>​
PSYCHO15rus [73]
Mass is the amount of particles present and weight is the amount of gravitational force experienced by a body. Since gravity changes from one celestial object to another, weight of a body changes accordingly. But it's mass remains constant since the amount of particles present in that object doesn't change anywhere
6 0
3 years ago
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