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3 years ago

What is atom and it use

Physics

2 answers:

melomori [17]3 years ago

7 0

Answer:

the basic unit of a chemical element.

synonyms:

particle · molecule · bit · little bit · tiny bit · tiny piece · fragment · fraction · grain · [more]

atoms as a source of nuclear energy.

"the power of the atom"

an extremely small amount of a thing or quality.

"I shall not have one atom of strength left"

synonyms:

particle · molecule · bit · little bit · tiny bit · tiny piece · fragment · [more]

Explanation:

azamat3 years ago

5 0

Answer: An atom is just like energy and its used for electricty

Explanation:

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Según el diagrama anterior, ¿cómo se forman las rocas metamórficas?

torisob [31]

Answer:

Explanation:

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3 years ago

An 80-kg bungee jumper jumps off a bridge. Rubber bungee cords act as a large spring attaching the jumper to the bridge. A bear

inysia [295]

Answer:

The force is $F_b = 216 \ N$

Explanation:

From the question we are told that

The mass of the bungee jumper is m = 80 kg

The spring constant is $k = 20 \ N/ m$

The extension of the rubber bungee cords is x = 50 m

Generally the weight of the jumper is

$W = m * g$

=> $W = 80 * 9.8$

=> tex]W = 784 \ N [/tex]

Generally the returning force of the rubber bungee cords is mathematically represented as

$F = k * x$

=> $F = 20 * 50$

=> $F = 1000 \ N$

The force to be applied by the bear is

$F_b = F - W$

=> $F_b = 100 - 784$

=> $F_b = 216 \ N$

6 0

3 years ago

If a planet has 3 times the radius of the Earth, but has the same density as the Earth, what is the gravitational acceleration a

xz_007 [3.2K]

Answer:

The Gravitational Acceleration of the Big planet is G = 3g

where G is the gravitational acceleration of the Big Planet and g is the gravitational acceleration of the Earth

So, it becomes G = 3 x 9.8 $ms^{-2}$

G = 29.4 $ms^{-2}$

Explanation:

Let's start by calculating the <u>Density of the Earth</u> of mass m anad Radius r

We know that mass is density times the volume

ρ = $\frac{m}{V}$

m = ρV

we know the volume is V = $\frac{4}{3}$ $πr^{3}$ (please ignore the symbol of Pi)

m = ρ $\frac{4}{3}$ $πr^{3}$

Calculating the <u>Density of Big Planet</u>

→For Big Planet we know that radius is 3-times the radius of Earth, that is 3r

M = ρ $\frac{108}{3}$ $π(r)^{3}$

So in conclusion, the mass of Earth and the mass of Big planet are related as M = 27m

Now let's come to the Gravitational Force, we know that gravitational force is directly proportional to the mass of the body and inversely proportional to the radius.

→Suppose for Earth: Mass = m, Radius = r

For Big Planet: Mass = M, Radius = R

$\frac{m}{r^{2} }$ : $\frac{M}{R^{2} }$ = g : G

$\frac{Gm}{r^{2} }$ = $\frac{gM}{R^{2} }$

G = $\frac{gMr^{2}}{mR^{2}}$

→ Putting the value of R = 3r and M = 27m

G = $\frac{g27mr^{2}}{m(3r)^{2}}$

By cutting the terms, we get

G = 3g

value of g= 9.8 $ms^{-2}$

G = 3 x $9.8ms^{-2}$

G = 29.4 $ms^{-2}$

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4 years ago

You have a dark-colored piece of cloth and a light-colored piece of cloth. what would be the best way to determine which piece o

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3 years ago

How do we know that an object has accelerated?

Olin [163]

A change in velocity or a change in direction, or both! Hope this helps

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3 years ago

What is atom and it use​

What is atom and it use