Which describes the experiment of becquerel and the curies

Answers

Answer 1

Answer:

The correct answer is D. Becquerel showed that uranium gave off radioactivity, and the Curies discovered other radioactive elements.

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What did Rutherford’s model of the atom include that Thomson’s model did not have?

Answers

Answer with Explanation:

Atom=Smallest Particle present on earth

Subatomic Particle=Smaller than Atom(Electron +Proton)

Electron = -vely Charged Particle

Proton =+vely Charged Particle

In J.J Thompson Model of Atom , which is called Plum Pudding model ,Electrons and Protons that is Subatomic particles were uniformly Distributed inside the Nucleus of Atom.

But Rutherford Contradicted Thompson by saying that, Protons are fixed inside the nucleus and Electrons are moving in Elliptical path around the nucleus like the planets around the sun.This Model is Known as Planetary Model.

Rutherford’s new evidence allowed him to propose a more detailed model with a central nucleus. he suggested that the Positive charge was all in a central nucleus.

A gas isn’t heated from 298 k to 367 k while it’s volume changes from 2.5 L to 3.9 L. If the initial pressure of the gass is 1.1 atm , what is the final pressure of the gass

Answers

Answer:

0.8684 atm

Explanation:

Using combined gas equation,

PV / T = k

P1*V1 / T1 = P2*V2 / T2

P1 = 1.10 atm

P2 = ?

V1 = 2.5L

V2 = 3.9L

T1 = 298k

T2 = 367k

P1*V1 / T1 = P2*V2 / T2

Making P2 the subject of formula;

P2 = P1*V1*T2 / V2*T1

P2 = 1.1*2.5*367 / 3.9*298

P2 = 1009.25 / 1162.2

P2 = 0.8684 atm

Here you go

This problem can be solved using one of the different gas laws, which is shown below:

PV/T

Given:

P1 = 1.1 atm

V1 = 2.5 L

T1 = 298 K

P2 = ?

V2 = 3.9 L

T2 = 367 K

Substituting the given:

P1V1/T1 = P2V2/T2

(1.1 * 2.5)/298 = (P2 * 3.9)/367

P2 = 0.868 atm

Hope it helps

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Which sphere has a radius of 4 in.? A sphere with volume StartFraction 32 Over 3 EndFraction pi inches cubed. A sphere with volume 36 pi inches cubed. A sphere with volume StartFraction 256 Over 3 EndFraction pi inches cubed. A sphere with volume 288 pi inches cubed.

Answers

Answer: The answer is C

Explanation: I just tried it

Answer:

Explanation:

What is the direction of transfer of energy in the waves produced?

Answers

Transverse waves occur when a disturbance causes oscillationsperpendicular (at right angles) to the propagation (the direction of energy transfer). Longitudinal waves occur when the oscillations are parallel to the direction of propagation.

Transverse waves occur when a disturbance causes oscillations perpendicular

Astronomy can best be described as a/an

Answers

as·tron·o·my- the branch of science that deals with celestial objects, space, and the physical universe as a whole. That's the definition hope it is what you need and that it helps:)

The study of heavenly bodies.

How that differs from astrophysics, astro dynamics, cosmology, etc., I'm not entirely sure.

The term test variable refers to:A) control variables

B) dependent variables

C) independent variables

Answers

Answer:

answer should be C.) Independent variable since its the one being changed

Explanation:

Answer:

The answer should be B.)

Explanation:

I took the test and got this correct

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What are the 3 ways that magma can form

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