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2 years ago

In a uranium fission reaction, uranium splits into two smaller atoms and energy. Where did the energy come from?

Physics

2 answers:

postnew [5]2 years ago

7 0

Answer: C. Some of uranium's mass is converted into energy, so the smaller atoms have less mass.

Explanation:

From Einstein's mass-energy relation:

E = mc²

Mass and energy are equivalent. Mass can be converted into energy and energy into mass.

When Uranium atoms under go nuclear fission, smaller atoms are formed and huge amount of energy is released. This energy comes from the mass difference of the uranium nuclei and new nuclei formed. This mass converted into energy according to Einstein's equation.

Nadya [2.5K]2 years ago

5 0

Answer:

The answer is C: Some of uranium's mass is converted into energy, so the smaller atoms have less mass. I took the test

Explanation:

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Electromagnetic waves differ from the other types of waves because they are

Ronch [10]

Correct answer choice is :

B) Able to travel through a vacuum.

Explanation:

Electromagnetic waves are applied to carry long/short/FM wavelength radio waves, and TV/telephone/wireless signals or services. They are also effective for transferring energy in the form of microwaves, infrared radiation, visible light, ultraviolet light, X-rays, and gamma rays. Electromagnetic waves change from mechanical waves in that they do not need a medium to generate. This means that electromagnetic waves can move not only in the air and solid matters but also in the void of space.

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2 years ago

Read 2 more answers

The sound from a bolt of lightning travelled 4.08 km in 12.0 s. What was the speed

LenaWriter [7]

Answer:

83.67 m/s

Explanation:

Set up a calculation to convert units of measure to what you need.

You have km/s and you need m/s.

4.08km 1000 m 83.67m

----------- X ---------- = --------------- the km will cancel out and you are left

12.0 s 1 km s with m/s

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2 years ago

1 kg air in a piston-cylinder assembly is heated at constant pressure, resulting the expansion of the volume. the initial temper

rewona [7]

Answer:

57,42 KJ

Explanation:

By a isobaric proces, the expresion for the works in the jpg adjunt. Then:

W = Pa(Vb - Va) = Pa*Vb - Pa*Va ---(1)

By the ideal gases law: PV=RTn

Then, in (1): (remember Pa = Pb)

W = R*Tb*n - R*T*an = R*n*(Tb - Ta) --- (2)

Since we have 1 Kg air: How much is this in moles?

From bibliography: 28.96 g/mol

Then, in 1 Kg (1000 g) there are:

n = 34,53 mol

Finally, in (2):

W = (8,3144 J/K.mol)*(34,53 mol)*(500K - 300K) = 51 419,9 J ≈ 57,42 KJ

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2 years ago

Why is it harder to breathe on a

Law Incorporation [45]

I think it’s d but I’m not sure

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2 years ago

A luge and its rider, with a total mass of 85 kg, emerge from adownhill track onto a horizontal straight track with an initial s

Verdich [7]

(1) Through the Second Law of motion, the equation for Force is:

F = m x a

Where m is mass and a is acceleration (deceleration)

(2) Distance is calculated through the equation,

D = Vi^2 / 2a

Where Vi is initial velocity

(3) Work is calculated through the equation,

W = F x D

Substituting the known values,

Part A:

(1) F = (85 kg)(2 m/s^2) = 170 N

(2) D = (37 m/s)^2 / (2)(2 m/s^2) = 9.25 m

(3) W = (170 N)(9.25 m) = 1572.5 J

Part B:

(1) F = (85 kg)(4 m/s^2) = 340 N

(2) D = (37 m/s)^2 / (2)(4 m/s^2) = 4.625 m

(3) W = (340 N)(4.625 m) = 1572.5 J

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2 years ago