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Vikki [24]
3 years ago
9

If Jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, _____... is being

done.
A. COMPRESSION
B. WORK
C. RADIATION
Chemistry
2 answers:
Pachacha [2.7K]3 years ago
8 0

<u>Answer;</u>

-Work

If Jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, <u>work </u> is being done.

<u>Explanation;</u>

  • Work refers to the application of a given force over a distance. Thus, we can say work is the product of force and distance.
  • Energy on the other hand is the ability of a body to change, its location, shape, or state of another body.
  • According to the work-Energy principle, a change in the kinetic energy, which is the energy possessed by a body in motion, is equivalent to the net work done on the body.
worty [1.4K]3 years ago
6 0

Answer: Option (B) is the correct answer.

Explanation:

Any activity which requires any physical or mental efforts in order to reach towards the result is known as work.

For example, when Jerome is swinging on a rope then he is doing a physical activity in which he is putting his efforts.

Thus, we can conclude that if Jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, work is being done.

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In a certain industrial process involving a heterogeneous catalyst, the volume of the catalyst (in the shape of a sphere) is 10.
mamaluj [8]

Answer:

D

Explanation:

We know that the

reaction catalyzing power of a catalyst ∝ surface area exposed by it

Given

volume V1= 10 cm^3

⇒\frac{4}{3} \pi r^3= 10

hence r= 1.545 cm

also, surface area S1= 4\pi r^2

now when the sphere is broken down into 8 smaller spheres

S2= 8×4πr'^2

now, equating V1 and V2 ( as the volume must remain same )

\frac{4}{3}\pi r^3=8\times\frac{4}{3} \pi r'^3

and solving we get

r'= r/2

therefore, S2=8\times4\pi\frac{r}{2}^2

S2=2\times4\pi r^2

S2= 2S1

hence the correct answer is

. The second run has twice the surface area.

8 0
3 years ago
Calculate the concentration (in mol/l) of 33% by weight (33 g naoh per 100 g of solution) naoh solution. (the density of the 33%
Shtirlitz [24]
Molarity is measured in moles per Liter. If there are 1.35 g/mL, find out how many grams there are in a liter of solution.

If there are 1000 mL in one liter, we can multiply by 1000 to get g/L

1.35 g/mL x 1 Liter/1000 mL = 1350 g per Liter of solution

By weight, the NaOH is 33% or .33

1350 g x .33 = 445.5 g of NaOH

Molar mass of NaOH is 39.997 g

445.5 g  x 1 mol NaOH/39.997 g = 11.13833538 moles per Liter

Rounded to significant figures, the answer is 11 mol/L NaOH


7 0
3 years ago
What is the element that is in period 5 and group 3?
rjkz [21]

Answer:

Rubidium

Rubidium is the first element placed in period 5. 

6 0
3 years ago
Help plz I rly. Need it
babymother [125]

Answer:

It should be D.

Explanation:

3 0
3 years ago
Write down examples of some natural acids and natural bases. Also write use of them.
trasher [3.6K]

Answer:

Formic acid, citric acid, Oxalic acid, washing soda, baking soda, etc. can be some examples of natural acids and natural bases. They both have domestic, industrial, and various other purposes.

Explanation:

<h3><u>NATURAL ACIDS</u>:</h3>

There are lots of natural acids present in our nature. Some of them are the following:

> <u>Formic acid</u>

 USE: It is used in the stimulation of oil and gas wells as it is less reactive towards the metal.

> <u>Citric acid</u>

 USE: It is considered as the best rust remover as it doesn't harm the metal just remove the rust.

> <u>Oxalic acid</u>

USE: It easily remove iron and ink stains and that's why it is used as an acid rinsing material in Laundries.

<h3><u>NATURAL BASES</u>:</h3>

There is a variety of natural base found in our nature which founds a lot of uses in day to day life. some of them are the following:

> <u>Washing soda</u>

USE: It is used in commercial detergent mixture to treat hard water.

> <u>Baking soda</u>

USE: It is the best rising agent used mostly in cooking and for domestic purposes like removing stains, etc..

3 0
3 years ago
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