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4 years ago

BTW THIS A 2 QUESTION TEST THERE WILL BE 2 THINGS TO ANSWER

1 answer:

8 0

William finds a piece of pure iron in his garden. After a few days, the iron begins to rust. What are the two types of substances involved in the rusting process of iron?

Iron is (B) an element.

with one kind of atom that combines with oxygen from the air to form rust (iron oxide). Rust contains two types of atoms, which means it is

(A) a compound

Hope this helps. Have a nice day.

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What is the relashinship between net force and balanced forces

MatroZZZ [7]

Answer: A net force is the overall force on an object when all the individual forces acting on an object are added together. When there is a net force acting on an object, the force is said to be unbalanced. With balanced forces, equal forces are exerted in opposite directions providing a net force of zero

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2 years ago

Which statement best describes how waves carry energy?

ratelena [41]

Correct answer choice is :

A) Energy moves from one place to another through the wave.

Explanation:

Waves can carry energy over a range without moving matter the complete distance. For instance, an ocean wave can move many kilometers without the water itself traveling many kilometers. The water moves up and down a motion recognized as a disturbance. A wave brings its energy without carrying matter. Waves are observed to travel through an ocean or lake, yet the water perpetually reverts to its rest state. Energy is carried through the medium, yet the water particles are not carried.

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3 years ago

Read 2 more answers

Help Me, this is my first time taking physics class.

bonufazy [111]

if we have to download something then probaly a virus

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3 years ago

Read 2 more answers

Electrons are ejected from sodium metal by any light that has a wavelength shorter than 544 nm. What is the kinetic energy of an

wel

Answer:

KE=2.3 x 10⁻¹⁹ J

Explanation:

Given that

λ = 544 nm

λ' = 485 nm

The kinetic energy KE given as

KE= E - Ф

Where

$E=\dfrac{hC}{\lambda'}$

$\phi=\dfrac{hC}{\lambda}$

h= 6.626 x 10⁻³⁴

C=3 x 10⁸ m/s

Now by putting the values

$KE=\dfrac{hC}{\lambda'}-\dfrac{hC}{\lambda}$

$KE=\dfrac{34.34\times 10^{-34}\times 3\times 10^8}{485\times 10^{-9}}- \dfrac{34.34\times 10^{-34}\times 3\times 10^8}{544\times 10^{-9}}$

KE=2.3 x 10⁻¹⁹ J

This is kinetic energy.

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3 years ago

Les

fomenos

Explanation:

I'm corona positive and isolated feeling depressed just logged in to talk someone but people ignoring me thanks for this behaviour got disappointed bye everyone logging out had a great time

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3 years ago