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vovikov84 [41]
4 years ago
7

A colloidal liquid in a has is called

Physics
1 answer:
S_A_V [24]4 years ago
8 0
Aerosol is the answer
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(2)
katrin [286]
What if I don’t give you the answer
6 0
2 years ago
a tungsten and coil has a resistance of 12 ohm at 15 degree celsius is the temperature coefficient of resistance of tungsten is
Dennis_Churaev [7]

Answer:

The resistance of the tungsten coil at 80 degrees Celsius is 15.12 ohm

Explanation:

The given parameters are;

The resistance of the tungsten coil at 15 degrees Celsius = 12 ohm

The temperature coefficient of resistance of tungsten = 0.004/°C

The resistance of the tungsten coil at 80 degrees Celsius is found using the following relation;

R₂ = R₁·[1 + α·(t₂ - t₁)]

Where;

R₁ = The resistance at the initial  temperature = 12 ohm

R₂ = The resistance of tungsten at the final temperature

t₁ = The initial temperature = 15 degrees Celsius

t₂ = The final temperature = 80 degrees Celsius

α = temperature coefficient of resistance of tungsten = 0.004/°C

Therefore, we have;

R₂ = 12×[1 + 0.004×(80 - 15)] = 15.12 ohm

The resistance of the tungsten coil at 80 degrees Celsius = 15.12 ohm.

6 0
3 years ago
Which one i need help
Lostsunrise [7]

Answer:

C

Explanation:

7 0
3 years ago
A 5.45-g combustible sample is burned in a calorimeter. the heat generated changes the temperature of 555 g of water from 20.5°c
Y_Kistochka [10]
Given:
m = 555 g, the mass of water in the calorimeter
ΔT = 39.5 - 20.5 = 19 °C, temperature change
c = 4.18 J/(°C-g), specific heat of  water

Assume that all generated heat goes into heating the water.
Then the energy released is
Q = mcΔT
    = (555 g)*(4.18 J/(°C-g)*(19 °C)
    = 44,078.1 J
    = 44,100 J (approximately)

Answer:  44,100 J

3 0
3 years ago
A 0.20-f capacitor is desired. what area must the plates have if they are to be separated by a 3.2-mm air gap?
Igoryamba
Air gap means that the dielectric is air.

So <span>ε0 = </span><span>8.85 x 10^-12 [F/m].......................permitivity of free space

Lets use the equation

</span>C= ( ε0x A) / d

Where A is the area of the plate

And d the distance between the plates

d = <span>3.2-mm = 3.2 E-3 m

so ............> A = C *d /</span>ε0 = 0.20 F * 3.2 E-3 m /  8.85 x 10^-12 [F/m]

A = 7.23 E 7 [m2]
5 0
3 years ago
Read 2 more answers
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