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3 years ago

Oil flows upward in the wick of a lantern because of the liquid property called

Physics

2 answers:

quester [9]3 years ago

4 0

Answer: Option (D) is the correct answer.

Explanation:

In a liquid, when an attractive force is exerted on the surface molecules by the inner molecules then there will be molecules in bulk on the surface of liquid. Due to this, the liquid acquires the shape having the least surface area. This is known as surface tension.

Whereas when a liquid rises in the upward direction due to surface tension and resists any external force then this action is known as capillary action.

Thus, we can conclude that oil flows upward in the wick of a lantern because of the liquid property called capillarity.

melomori [17]3 years ago

3 0

Oil flows upward in the wick of a lantern because of the liquid property called capillarity.
Final answer: D

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Please hurry

viktelen [127]

Answer:

The velocity will be "76.8 m/s".

Explanation:

The given values are:

Acceleration,

a = 2.4 m/s²

Time,

t = 32 seconds

By equation of motion,

⇒ $v=u+at$

On substituting the values, we get

⇒ $=0+2.4\times 32$

⇒ $=0+76.8$

⇒ $=76.8 \ m/s$

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3 years ago

How much power is used by car when it applies 40,000 J of work over a 5.6 second interval

Tcecarenko [31]

Answer:

7142.86W

Explanation:

Given parameters:

Work done by brake = 40000J

Time taken = 5.6s

Unknown:

Power used by car = ?

Solution:

Power can be defined as the rate at which work is done. It is mathematically expressed as;

Power = $\frac{work done }{time taken}$

Now input the variables;

Power = $\frac{40000}{5.6}$ = 7142.86W

8 0

3 years ago

A child pushes a toy box across the floor in 5 seconds. If he did 30 J of work on the toy box, what amount of power was required

s2008m [1.1K]

My answer is 6 watts because 30J/5s is 6

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3 years ago

Read 2 more answers

What is the relationship between chromosomes and a body's appearance? (A) Chromosomes make it possible for all bodies to exactly

Katen [24]

Answer: The correct option is B.

Chromosomes contain genes that tell the body how to grow and work.

Explanation:

This is because chromosomes contain alot of human genes which are found in the nucleus and every humans have 23 pairs of chromosomes. The sets of genes determines some of the body features, characteristics or traits. The genes in the body form the genotype and the genotype is expressed physically which is now the phenotype i.e traits expressed physically in the body which is an indication of body appearance.

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3 years ago

The ____ of emitted light depends directly on the energy between the two orbits and this determines the color of the light

Anna007 [38]

The frequency of emitted light is directly proportional to the energy between the two orbits and this determines the color of the light.

<h3>What is light?</h3>

Light can be defined as a form of electromagnetic waves that does not require any medium for its propagation. This ultimately implies that, light is a form of wave that is generally referred to as a visual signal because it can be seen with the eyes.

According to the model of light wave, the frequency of emitted light is directly proportional to the energy between the two orbits and this determines the color of the light.

In conlcusion, the frequency of emitted light is highly dependent on the energy between the two (2) orbits.

Read more on energy here: brainly.com/question/1242059

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3 years ago