2 years ago

The discovery that the universe appears to be expanding led to a widely accepted theory called ____?

Physics

2 answers:

Artemon [7]2 years ago

8 0

I believe the answer is c which is hubble’s law.

svet-max [94.6K]2 years ago

5 0

Answer:c hubble's law

Explanation:

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Singly charged uranium-238 ions are accelerated through a potential difference of 2.20 kV and enter a uniform magnetic field of

Aleonysh [2.5K]

Answer:

r = 0.0548 m

Explanation:

Given that,

Singly charged uranium-238 ions are accelerated through a potential difference of 2.20 kV and enter a uniform magnetic field of 1.90 T directed perpendicular to their velocities.

We need to find the radius of their circular path. The formula for the radius of path is given by :

$r=\dfrac{1}{B}\sqrt{\dfrac{2mV}{q}}$

m is mass of Singly charged uranium-238 ion, $m=3.95\times 10^{-25}\ kg$

q is charge

So,

$r=\dfrac{1}{1.9}\times \sqrt{\dfrac{2\times 3.95\times 10^{-25}\times 2.2\times 10^3}{1.6\times 10^{-19}}}\\\\r=0.0548\ m$

So, the radius of their circular path is equal to 0.0548 m.

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2 years ago

A car has a mass of 1.20 x 10^3 kilograms and a momentum of 2.00 x 10^4 kilogram meters/second. What is the velocity of the car?

lorasvet [3.4K]

The answer will be v=16.7m/s
I hope this helps you, have a great day!

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2 years ago

What is the correct answer?

Anastaziya [24]

Answer:

i think 2 but not sure

Explanation:

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Why is the simultaneous detection of methane and oxygen in an atmosphere a good indication of the existence of a biosphere on th

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Answer:

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