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3 years ago

2. How does your expanding balloon model represent an expanding universe?

Physics

2 answers:

givi [52]3 years ago

7 0

Answer:

Found this off of google, "When you inflate the balloon, the dots slowly move away from each other because the rubber stretches in the space between them. ... This stretching of space, which causes the distance between galaxies to increase, is what astronomers mean by the expansion of the Universe."

Nadusha1986 [10]3 years ago

5 0

Answer:

When you inflate the balloon it makes similar marks and dots comparing to the universe.

Have a good day.

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Two spheres carry a charge of 1x10^-7 C. Their centers are separated by 0.7m. Calculate the magnitude of the force between the t

Drupady [299]

We have that the force between the two charged objects is mathematically given as

F=2.349N

<h3>Magnitude of the force between two charged objects.</h3>

Question Parameters:

Two spheres carry a charge of 1x10^-7 C.

Their centers are <u>separated</u> by 0.7m.

Generally the equation for the Force is mathematically given as

$F=\frac{q1q2}{4*\pi e*r}$

Therefore

$F=\frac{(1e-7)^2}{9e9*0.7}$

F=2.349N

For more information on Force visit

brainly.com/question/26115859

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3 years ago

Select all THREE of the correct response about the diagram of an atom.

STALIN [3.7K]

Answer: HI

Explanation:

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3 years ago

How many molecules of water are recycled into one molecule of glucose during photosynthesis?

SashulF [63]

Answer: A.) 6 molecules of water

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2 years ago

Read 2 more answers

When the starter motor on a car is engaged, there is a 300 A cunent in the wires between the bauery and the motor. Suppose the w

docker41 [41]

Answer:

diameter of transmission is 3.473 mm

Explanation:

given data

current = 300 A

total wire length = 1.0 m

voltage drop = 0.55 V

solution

as here Resistivity of copper is = 1.68 × $10^{-8}$ ohm- m

so we get here resistance of wire that is

resistance = $\frac{V}{I}$ ..............1

R = $\frac{0.55}{310}$

R = 1.774 × $10^{-3}$ ohm

and now we get diameter of wire that is

R = $\frac{\rho l}{A}$ .............2

$\pi \frac{d^2}{4} = \frac{\rho l}{R}$

d² = $\frac{4\rho l}{\pi R}$ ...............3

put here value

d² = $\frac{4\times 1.68\times 10^{-8} \times 1}{\pi \times 1.774\times 10^{-3}}$

d = $\sqrt{12.064\times 10^{-6}}$

d = 3.473 × $10^{-3}$ m

d = 3.473 mm

so diameter of transmission is 3.473 mm

4 0

4 years ago

Two straight wires are in parallel and carry electrical currents in opposite directions with the same magnitude of LaTeX: 2.02.0

koban [17]

Answer:

$2.4\times 10^{-5} N$

Explanation:

We are given that

$I_1=I_2=2.0 A$

Distance between the wires, $d=5.0 mm=5\times 10^{-3} m$

1mm= $10^{-3} m$

Length of other wire,l=0.3 m

Length of one wire is infinite.

We have to find the magnitude of force between the two wires.

We know that magnetic force

$F=\frac{2\mu_0 I_1I_2 l}{4\pi d}$

Where $\frac{\mu_0}{4\pi}=10^{-7}$

$F=\frac{2\times 10^{-7}\times 2\times 2\times 0.3}{5\times 10^{-3}}$

$F=2.4\times 10^{-5} N$

When the wires carrying equal current in opposite direction then the force between two wires repel to each other.

3 0

3 years ago