3 years ago

A generator makes electricity from_____.

1 answer:

5 0

Kinetic energy.

Based on Fleming left hand principle, the coil in a generator produces a magnetic field whereby and alternator converts it to electricity.

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if you are curious at to why so many of ur family members have certain hair or eye color, you might want to look at... A. Astrol

densk [106]

Answer:

c) hereditary

Explanation:

This means that if your parents had one eye colour, you'll most likely have the same one because you share the same genes, and it's passed down to you.

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3 years ago

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What is the ionic charge for the calcium ion in CaCO3?

Lunna [17]

The ionic charge of Calcium (Ca) in calcium carbonate (CaCO3) is 2+. CaCO3 has a neutral ionic charge sin CO3 has a 2- charge.

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3 years ago

In which group of the Periodic Table do most of the elements exhibit both positive and negative oxidation states?

Shtirlitz [24]

C i think but you should pick it anyway

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3 years ago

What is the mean free path for the molecules in an ideal gas when the pressure is 100 kPa and the temperature is 300 K given tha

sladkih [1.3K]

Answer:

The mean free path = 2.16*10^-6 m

Explanation:

Given:

Pressure of gas P = 100 kPa

Temperature T = 300 K

collision cross section, σ = 2.0*10^-20 m2

Boltzmann constant, k = 1.38*10^-23 J/K

To determine:

The mean free path, λ

Calculation:

The mean free path is related to the collision cross section by the following equation:

$\lambda =\frac{1}{n\sigma }------(1)$

where n = number density

$n = \frac{P}{kT}-----(2)$

Substituting for P, k and T in equation (2) gives:

$n = \frac{100,000 Pa}{1.38*10^{-23} J/K*300K} =2.42*10^{25}\ m^{3}$

Next, substituting for n and σ in equation (1) gives:

$\lambda =\frac{1}{2.42*10^{25}m^{-3}* .0*10^{-20}m^{2}}=2.1*10^{-6}m$

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3 years ago

Which has more volume a kilogram of feathers or a kilogram of bricks please answer quickly thank you

elena55 [62]

I'll answer the first question: the answer is....a kilogram of bricks.

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