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3 years ago

11

A homeowner has a new oil furnace which has an efficiency of 60%. For every 100 barrels of oil used to heat his house, how much

(in barrels of oil) goes up the chimney as waste heat?

1 answer:

nasty-shy [4]3 years ago

4 0

Answer:

below

Explanation:

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Phase, color, and ductility are all examples of what type of property?

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Physical properties.

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In the Bohr model of the atom, atomic electrons approximatately 'orbit' the nucleus. The hydrogen atom consists of a proton of m

lara31 [8.8K]

Answer:

$F=3.61\times 10^{-47}\ N$

Explanation:

Mass of a proton, $m_p=1.67\times 10^{-27}\ kg$

Mass of an electron, $m_e=9.11\times 10^{-31}\ kg$

The distance between the electron and the proton is, $r=5.3\times 10^{-11}\ m$

We need to find the mutual attractive gravitational force between the electron and proton. The gravitational force is given by :

$F=G\dfrac{m_em_p}{r^2}$

Where G is the universal Gravitational constant

$F=6.67\times 10^{-11}\times \dfrac{9.11\times 10^{-31}\times 1.67\times 10^{-27}}{(5.3\times 10^{-11})^2}\\\\F=3.61\times 10^{-47}\ N$

So, the force between the electron and proton is $3.61\times 10^{-47}\ N$ .

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3 years ago

What is the formula for force?

Vitek1552 [10]

Choice 'b' is one possible way to state
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The other choices are meaningless.

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4 years ago

A car traveling at 5m/s starts to speed up after 3 seconds its velocity has increased to 11 m/s what is its acceleration

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Answer:

a=(v-u)/t

Explanation:

a =(11-5)/3

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a= 2.6 m/s

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Im pretty sure it’s a because it makes more sense you know?.

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