For this case the main unit is liter.
The first thing you should know is that the liter is a unit of volume.
The difference then between hectoliter and kiloliter is the conversion factor.
For hectoliter we have:
1 hectoliter = 100 liters
For kiloliter we have:
1 kiloliter = 1000 liters
Answer:
The difference between both is the conversion factor:
1 hectoliter = 100 liters
1 kiloliter = 1000 liters
B. 0.004021624m3
C. 0.002021624m3
D. 0.000010812m3
As per the question the volume of mercury is given as 0.002 m^3 at 20 degree Celsius.
We are asked to calculate the volume of the mercury at 50 degree Celsius.
This problem is based on thermal expansion of matter.
Let us consider the initial and final volume of the mercury is denoted as -
Let the initial and final temperature of the mercury is denoted as -
As per question
The change in temperature is
Mercury is a fluid.So we have to apply volume expansion of liquid .
The coefficient of of volume expansion of mercury at 20 degree Celsius is 0.00018 per centigrade.
As per volume expansion of liquid,
Here is the volume at T degree Celsius.
Hence volume at 50 degree Celsius is calculated as-
[ans]
As per the options given in the question ,option A is close to the calculated value. So option A is right.
Increase the friction between its moving parts.
Reduce the friction between its moving parts.
Redefine the machine’s system boundaries.
Based on the law of conservation of energy, we know that we can't create energy, machines can only convert one type of energy into another. So, if we want to improve a machines ability then we need to reduce it's loss energy (part of energy which is useless).
"The law of conservation of energy states that the amount of energy is neither created nor destroyed. For example, when you roll a toy car down a ramp and it hits a wall, the energy is transferred from kinetic energy to potential energy."
"Energy is defined as the “ability to do work, which is the ability to exert a force causing displacement of an object.” Energy is just the force that causes things to move. Energy is divided into two types: potential and kinetic.
Know more about energy here
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B. atom
C. element
D. molecule
Answer:
Movement of Galaxies away from us.
Explanation:
Big Bang theory is the most widely accepted theory which says that the universe started with a huge expansion, it was not an explosion. By that logic everything must be moving from each other even today. This was proved by observing the Redshift in the spectrum of the galaxies which means that they are moving away from us.
the answer is given in the picture pasted
Hopefully it Helps.