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Alexandra [31]
2 years ago
12

How do simple machines make work easier?

Chemistry
2 answers:
Semmy [17]2 years ago
7 0

Answer:

They increases the distance of applied force(torque)as well as they change the strenght or direction of a force(90 angle work).

Explanation:

Kobotan [32]2 years ago
7 0

Answer:

W=f× d

Increase the distance of applied forces

Explanation:

Increasing the distance between applied forces increases the work done on the machine which makes work easier..they change the direction and strength of the force.

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It takes a slug 20 minutes to travel from the grass to the trash can, a trip of 15 meters. How far could the slug travel in 60 m
ruslelena [56]

Answer:

45 meters

Explanation:

If it takes the slug 20 minutes to travel 15 meters, you multiply the 15 by three to get the distance for 60 minutes.

4 0
3 years ago
How many grams of Ca(NO3)2 are needed to make 25.0 g of a 15.0% Ca(NO3)2(aq)?
yarga [219]

Answer:

3.75 g.

Explanation:

<em>mass percent is the ratio of the mass of the solute to the mass of the solution multiplied by 100.</em>

<em />

<em>mass % = (mass of solute/mass of solution) x 100.</em>

<em></em>

mass of calcium nitrite = ??? g,

mass of the solution = 25.0 g.

∴ mass % = (mass of solute/mass of solution) x 100

<em></em>

<em>∴ mass of solute (calcium nitrite) = (mass %)(mass of solution)/100</em> = (15.0 %)(25.0 g)/100 = <em>3.75 g.</em>

5 0
3 years ago
Is an element’s flame color a chemical characteristic? Explain.
il63 [147K]

Answer:

It's a physical property because color is chemically not significant.

But occurance of a flame is chemical property because combustion takes place

8 0
2 years ago
How can you estimate the pH range of an indicator’s color change? Why do some indicators have two separate pH ranges?
erastova [34]

The color change of a pH indicator is caused by the dissociation of the H+ ion from the indicator.

<h3 /><h3>What is indicator?</h3>

In science, a marker capability or a trademark capability of a subset An of a set X is a capability characterized from X to the two components set {0, 1}, normally signified as, and it demonstrates whether a component in X has a place with A. Markers are insights used to gauge current circumstances as well as to figure monetary or financial patterns. In the realm of money management, pointers regularly allude to specialized diagram designs getting from the value, volume, or open revenue of a given security. Markers are insights used to gauge current circumstances as well as to conjecture monetary or financial patterns. In the realm of money management, pointers normally allude to specialized graph designs getting from the value, volume, or open revenue of a given security.

Learn more about indicator, visit

brainly.com/question/11422436

#SPJ4

4 0
1 year ago
whats the name of the group 13 of the periodic table? 14 is cristalogens and 15 pnictogens and 16 chalcogens and 17 halogens and
qaws [65]

Answer:

Boron family.

Explanation:

Group 13 is called boron family.

It consist of five members boron, aluminum, gallium, indium and thallium.

Boron is semi metal while other members are metals.

Boron hydrates are used to make organic compounds.

Al is soft metal and aluminum oxides are widely used as thermal insulator.

Aluminum sulfate is also very important commercial compound used in sizing paper.

Gallium is also very important element of this group. It form gallium arsenide which is used to convert the light into electricity.

Indium is malleable soft metal which is used in optical instruments.

Thallium is highly toxic and for the long period of time it as used as insect killing poison.

3 0
3 years ago
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