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3 years ago

Physics question about density

Physics

2 answers:

scZoUnD [109]3 years ago

7 0

So the right answer is 4kg/m^3.

Look at the attached picture

Hope it will help you

Good luck on your assignment

ohaa [14]3 years ago

6 0

Answer:

The answer is option 4.

Explanation:

Firstly, you have to convert the mass of tea bagto kilogram as the question wants the unit in kg/m³.

$1000g = 1kg$

$100g = 1kg \div 10$

$100g = 0.1kg$

So the mass of tea bag is 0.1 kg. Next you have to use density formula ρ = mass/volume. Then you have to substitute the values into the formula :

$ρ = \frac{mass}{volume}$

Let mass = 0.1kg,

Let volume = 0.025m³,

$ρ = \frac{0.1}{0.025}$

$ρ = 4kg \: per \: {m}^{3}$

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slega [8]

Answer:

The thermal conductivity of the wall = 40W/m.C

h = 10 W/m^2.C

Explanation:

The heat conduction equation is given by:

d^2T/ dx^2 + egen/ K = 0

The thermal conductivity of the wall can be calculated using:

K = egen/ 2a = 800/2×10

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Applying energy balance at the wall surface

"qL = "qconv

-K = (dT/dx)L = h (TL - Tinfinity)

The convention heat transfer coefficient will be:

h = -k × (-2aL)/ (TL - Tinfinty)

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From the given temperature distribution

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3 years ago

What is the magnitude of the gravitational force the apple exerts on earth?

blagie [28]

It's downward vector from the centre of apple in the direction to the centre of the Earth.

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irga5000 [103]

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here given that

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aalyn [17]

Answer:

Explanation:

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7 0

3 years ago