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3 years ago

1) How is chemical energy transformed into potential energy?

Physics

1 answer:

tia_tia [17]3 years ago

6 0

Answer:

Chemical potential energy is a form of potential energy related to the structural arrangement of atoms or molecules. This arrangement may be the result of chemical bonds within a molecule or otherwise. Chemical energy of a chemical substance can be transformed to other forms of energy by a chemical reaction.

Explanation:

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You are standing on a skateboard, initially at rest. A friend throws a very heavy ball towards you. You can either catch the obj

kicyunya [14]

Answer:

B) You should catch the ball.

Explanation:

In order to minimize the speed on the skateboard, you should catch the ball.

Let 'M' be the mass of the ball, 'm' the mass of the skater, 'V0' the speed the ball was thrown and 'Vs' the speed of the skater.

By conservation of momentum, if the skater catches the ball:

$M*V_{0} + m*0 = (m+M)*V_{s}\\V_{s} = \frac{M*(V_{0} - V_{s})}{(m)}\\$

If the skater deflects the ball, it will assume a new velocity with direction opposite to that of the skater, let it be 'Vb':

$M*V_{0} + m*0 = m*V_{s}-M*V_{b}\\V_{s} = \frac{M*V_{0}+ M*V_{b}}{(m)}\\V_{s} = \frac{M(V_{0}+ V_{b})}{m}$

Since:

$V_{0} - V_{s} < V_{0}+ V_{b}$

A lower velocity would be achieved by catching the ball.

5 0

3 years ago

if you looked at the frequency spectrums of two friends saying the word dog, would they look the same or different?

klasskru [66]

Answer:

different

Explanation:

everybody have there own way of saying it.

6 0

3 years ago

What kind of scattering (Rayleigh, Mie, or non-selective) would you expect to be most important when radiation of the specified

oee [108]

Answer:

hello your question is not properly arranged attached below is the arranged table and solution

answer : attached table below

Explanation:

Given data:

02 molecules size = 10^-10m

smoke particles size = 0.3 mm

cloud droplets size = 20 mm

Rain droplets size = 3 mm

Attached below is a table showing the kind of scattering that is expected to occur at various wave lengths

Note : For Rayleigh scattering the wave particle is smaller than the wave length while for Non-selective scattering the wave particle is greater than the wavelength.

and For Mie scattering the wavelength is the same as the wavelength.

3 0

3 years ago

if the moon is 238,000 miles from earth, convert this distance to meters and leave your answer in scientific notation.

Softa [21]

The result of the value conversion is 382,942,000 meters and it can be written by scientific notation as $\sf{\bold{3.83 \times 10^8 \: meters}}$

<h2>Introduction </h2>

Hi ! I'm Deva from Brainly Indonesia. Here I will help you convert between units and convert it to scientific notation.

<h3>International Standard Unit</h3>

In the world of physics, we know a system called International Standard units, so that the non-standard form of units (which are agreed upon by several countries or people only), must be converted to this international standard.

<h3>Scientific Notation</h3>

Scientific notation is the notation used to simplify the mention of too long zeros as integers or decimal number. Scientific notation is denoted by:

$\boxed{\sf{\bold{x \cdot 10^n}}}$

With the following condition :

x = any number starting from 1 and less than 10 and can be decimal.
n = any number both positive and negative integers.

<h2>Problem Solving</h2>

We know that :

1 mile ≈ 1.609 kilometers ≈ 1,609 meters
The distance >> 238,000 miles.

What was asked :

Distance = ... meters
Scientific notation = ... ?

Step by step :

Distance = d

$\sf{d = 238,000 \times 1,609}$

$\boxed{\sf{d = 382,942,000 \: meters}}$

Scientific Notation

The result states the number in the hundreds of millions. The number hundreds of millions always has a power of 8 ( $\sf{10^8}$ ). So, we convert 382.942,000 >> 3.82942000 and because the last three zeros can be omitted.

The scientific notation become :

$\boxed{\sf{Distance \: = 3.83 \times 10^8 \: meters}}$

8 0

2 years ago

An experiment in your science class lists the materials needed for the lab. It is your job, as a lab partner, to measure out 25

andreyandreev [35.5K]

Overview:
You would use a graduated cylinder to measure 25 ml of the liquid and use a scale to weigh the amount of Magnesium (it can be a balance but most labs now have small scales) and you would carefully put small amounts of magnesium until it states 2.5 grams.

Procedure:
Take the graduated cylinder and place it on the table. Carefully take the water and fill the graduated cylinder up to 25ml. If you took to much just simply pour some out and if you didnt take enough then put more. After you measured the water then you can pour the 25 ml of water into a beaker, but this is totally optional.

For the magnesium first you put on the scale and set it to grams. Afterwards just take small pieces of the magnesium and place it on the scale until you reach 2.5 grams. Afterwards you can carefully place the magnesium in another beaker or something like that.

5 0

3 years ago