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2 years ago

Match these items.

Physics

1 answer:

aleksandrvk [35]2 years ago

3 0

Answer:

Here's your answer :

Asteroids - Between mars and Jupiter
Fission - splitting atoms
Energy - Sun's atmosphere
Fusion - The combining of atomic nuclei to form one nucleus
Corona - Ability to do work
Comets - Ice, dust, frozen gases

hope it helps!

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Which of these statements is correct about Newton's law on gravity?

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Newton's law of gravity does not explain WHY objects exert gravitational force.

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Answer:

2.77 * 10^5 m/s

Explanation:

Let us recall that kinetic energy is given by 1/2 mv^2

Where;

m = mass of the body

v = velocity of the body

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m = 3.38 * 10^31 kg

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v = √2KE/m

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2 years ago

Define 1 unit electricity

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Answer:

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2 years ago

An expensive vacuum system can achieve a pressure as low as 1.00×10^{-7} N/m^2 at 20ºC . How many atoms are there in a cubic cen

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Answer:

$24.70818432141\times 10^7\ atoms$

Explanation:

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V = Volume = 1 cm³

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T = Temperature = 273.15+20 = 293.15 K

From the ideal gas law

$PV=nRT\\\Rightarrow n=\frac{PV}{RT}$

$n=\frac{N}{N_A}$

$\frac{N}{N_A}=\frac{PV}{RT}\\\Rightarrow N=N_A\times \frac{PV}{RT}\\\Rightarrow N=\frac{1\times 10^{-7}\times 1\times 10^{-6}}{8.314\times 293.15}\times 6.022\times 10^{23}\\\Rightarrow N=24708184.32141\ atoms=24.70818432141\times 10^7\ atoms$

The number of atoms is $24.70818432141\times 10^7\ atoms$

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2 years ago

A Carnot heat engine uses a hot reservoir consisting of a large amount of boiling water and a cold reservoir consisting of a lar

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Answer:

W= 4.89 KJ

Explanation:

Lets take

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2 years ago

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