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3 years ago

PLEASE HELP ME I NEED THIS ASAP!!!!

Physics

2 answers:

pshichka [43]3 years ago

5 0

Answer:

Sound energy is the movement of energy through a substance – such as air or water – in the form of waves. It is produced when a force causes an object or substance to vibrate.

Explanation:

sound energy can be air conditioning fan, balloon popping and a buzzing bee

hope this helps:)

Zina [86]3 years ago

3 0

Answer:

loud bangs

Explanation:

the pots for cooking fell

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Explain how valence electrons can result in the<br> creation of ions.

Brums [2.3K]

So as you may know atoms are neutral because the number of protons (+ charge) and the number of electrons( - charge) are the same so they cancel out. When a valence electron leaves an atom it will have a +1 charge because there is one less negative than positives or there is one more positive than negatives since a negative electron left. If a valence electron is added a -1 charge because there is now one more negative than positive!!!
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3 years ago

An object that has a mass of 36.0kg is pushed along a horizontal surface with a force of 85.0N. IF

Oksana_A [137]

Answer:

0.36m/s^2

Explanation:

a=f/m

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3 years ago

Suppose the collision between the packages is perfectly elastic. To what height does the package of mass m rebound?

Hitman42 [59]

The height, h to which the package of mass m bounces to depends on its initial velocity, v and the acceleration due to gravity, g and is given below:

$h = \frac{v^{2}}{2g}$

<h3>What are perfectly elastic collision?</h3>

Perfectly elastic collisions are collisions in which the momentum as well as the energy of the colliding bodies is conserved.

In perfectly elastic collisions, the sum of momentum before collision is equal to the momentum after collision.

Also, the sum of kinetic energy before collision is equal to the sum of kinetic energy after collision.

Since some of the Kinetic energy is converted to potential energy of the body;

$\frac{mv^{2}}{2} = mgh$

$h = \frac{v^{2}}{2g}$

Therefore, the height to which the package m bounces to depends on its initial velocity and the acceleration due to gravity.

Learn more about elastic collisions at: brainly.com/question/7694106

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2 years ago

A ball is dropped off a building and falls past a window that is 2.2m long. If it takes .28s for the ball to cross the window wh

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0.616 is the distance from the top
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2 years ago

True or false: When an object becomes polarized, it acquires a charge and becomes a charged object.

PSYCHO15rus [73]

Answer:

i think its true

Explanation:

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3 years ago