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cupoosta [38]
4 years ago
15

What is the best explanation of work?

Physics
2 answers:
DaniilM [7]4 years ago
8 0

Answer:

Work occurs when a force acts on an object and causes a displacement of that object.

Explanation:

a . Force applying over a distance or in other words force causing the movement (displacement) of an object is known as Work.

b. An activity with mental or physical effort is done in order to achieve a result is called work.  

c. A constant force integrates the product of the force and distance.

Ex : 1) when the body moves in the direction of force

2) shooting a bullet

3) Pushing a car horizontally from rest

4)walking up stairs

5) sawing a log.

Ivenika [448]4 years ago
4 0

Answer:

Work occurs when a force acts on an object and causes a displacement of that object.

Explanation:

If F is the force applied to an object and d is the displacement caused due to this force, then the amount of work done by it is given by :

W = F × d

Where

F is the force applied

d is the displacement

Work done also depends on the angle between force and the displacement. So, the correct option is "Work occurs when a force acts on an object and causes a displacement of that object".

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A balloon is filled with a gas at 111 kPa when the temperature was 22*C. If the temperature
storchak [24]

119.7kPa

Explanation:

Given parameters:

Pressure of gas in balloon = 111kPa

Temperature of gas = 22°C

Final temperature = 45°C

Unknown:

Final pressure = ?

Solution:

Since the gases in the balloon have the same number of moles. We can apply a derivative of the combined gas law to solve this problem.

At constant volume the pressure of a given mass of gas varies directly with the absolute temperature.

           \frac{P1}{T1}   =  \frac{P2}{T2}

P1 is the initial pressure

P2 is the final pressure

T1 is the initial temperature

T2 is the final temperature

 convert from celcius to kelvin:

       tK = 273 + tC

   T1 = 273 + 22 = 295K

   T2 = 273 + 45 = 318K

      \frac{111}{295}  =  \frac{P2}{318}

  P2 = 119.7kPa

learn more:

Ideal gas brainly.com/question/13064292

#learnwithBrainly

3 0
3 years ago
Which of the following is the correctly abbreviated SI unit describing the mass of an object
frosja888 [35]
Mass is Kg 
Mol is the amount of substance 
m is for meters
8 0
3 years ago
Read 2 more answers
In a classical model of the singly-ionized helium atom, a single electron orbits the nucleus in a circular orbit of radius.
NikAS [45]

Yes, in a classical model of the singly-ionized helium atom, a single electron orbits the nucleus.

<h3>What is singly ionized helium?</h3>

Singly ionized helium is an atom that has lost one electrons from its outermost shell. We consider its remaining electron like a hydrogen electron. There is only one difference between a hydrogen atom and a singly ionized helium atom which is the number of protons in the nucleus so the nucleus charge on singly ionized helium is -1.

Learn more about helium here: brainly.com/question/26226232

5 0
3 years ago
In a catapult, energy is transferred into useful kinetic energy stores. What store is the energy in when it is the catapult?
yawa3891 [41]

Answer:

actually I was just wondering what you are thinking

6 0
3 years ago
A moderate force will break an egg. However, an egg droppedon the road usually breaks while one dropped on the grass usuallydoes
Fed [463]

Answer:

C. the time interval for stopping is greater.

Explanation:

As the egg falls onto the grass, it takes a a greater amount of time for it to stop, and thus the force that is being applied to it is in increments; there is never enough force applied on the egg for it to break. That's why the egg doesn't break when it lands on the grass.

In contrast, when the egg is dropped on the road, <em>all of the force that is being applied by the road on the egg is in the tiny interval when the egg touches the road</em>, That force is large enough to break the egg because it is being applied in a tiny amount of time. That's why the egg dropped on the road breaks.

<em>So here is the rule of thumb: if you don't want to break your things but still want to drop them, drop them such that it takes  some for them to stop—because force will applied to them gradually. </em>

6 0
4 years ago
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