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eduard
3 years ago
10

How to find current in a series circuit

Physics
1 answer:
Alisiya [41]3 years ago
7 0
Divide the battery voltage by the sum of all the resistances in the series circuit. The quotient is the circuit current, in Amperes.
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În ce raport de mase trebuie amestecate două cantități din același lichid, având temperaturile t1=10 grade Celsius, respectiv t2
Brilliant_brown [7]

Răspuns:

7: 4

Explicaţie:

Formula pentru calcularea cantității de căldură absorbită este exprimată ca;

Q = mc∆t

m este masa substanței

c este capacitatea termică specifică

∆t este schimbarea temperaturii

Conform legii calorimetriei, căldura pierdută de substanța rece = căldura câștigată de substanța fierbinte.

Folosind formula

(mc∆t) rece = (mc∆t) fierbinte

McCw∆tc = MhCw∆th

Deoarece au aceeași capacitate de căldură specifică, se vor anula. Ecuația devine;

Mc∆tc = Mh∆th ...... 1

Pentru apa rece;

∆tc = 45 ° C - 10 ° C

∆tc = 35 ° C

Pentru apa fierbinte:

∆th = 65 ° C - 45 ° C

∆th = 20 ° C

Înlocuiți în ecuația 1;

Mc (35) = Mh (20)

35Mc = 20Mh

Luând raportul dintre masa apei reci și cea fierbinte:

Mh / Mc = 35/20

Mh / Mc = 7/4

Prin urmare, lichidul trebuie amestecat împreună în raportul 7: 4

8 0
3 years ago
which properties change the composition of a substance? A) physical properties B) neither chemical nor physical properties C) ch
svlad2 [7]

Answer:

C) chemical properties is the answer....

8 0
2 years ago
Two solid spheres of radius R made of the same type of steel are placed in contact. The magnitude of the gravitational force the
dimulka [17.4K]
F1 = G * m*m / [2r]  ^2 = G * m^2 / 4r^2

Given the the mass is proportional to the volume and the volume is proportional to r^3, the mass of each big sphere is  3^3 = 27 times the mass of the small spheres. And the distance between the centers is 3r + 3r = 6r

F2 = G * [27m * 27m]/* [6r]^2 = G* 27^2 m^2 / 36r^2 = 81 G*m^2 / 4r^2 = 81*F1

Therefore, F2 = 81F1

Answer: option D) 81F1.
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3 years ago
The average, year-after-year conditions of temperature, precipitation, winds, and cloud in an area are known as its
STatiana [176]

Answer:

a. global warming

Explanation:

that's the definitain of global warming

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3 years ago
Place the ball in the plastic bag, and twist the top so the ball is secure in the bag. Wrap the twisted portion with tape so it
Irina18 [472]

I observe two phenomena:

Obs-1:  I don't have the materials here to perform this experiment.

Obs-2:  You have not done the assigned experiment, and you apparently have no intention of doing it.

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