The distance between the fixed point of a Celsius thermometer is20cm. what is the temperature when the mercury level is 4.5cm ab
1 answer:
Answer:
22.5°C
Explanation:
Given height of Celsius thermometer is 20 cm.
As we know the limit of a Celsius thermometer is 100°C
It is given that total height of thermometer is 20 cm.
So, this limit that is 100°C should be equal to 20 cm.
°C
°C
°C
Now, we want to find the temperature when the level of mercury was 4.5 cm.
°C
°C
Hence, we have 22.5°C temperature in Celsius thermometer when height of mercury is 4.5 cm above the lower mark.
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The potential energy of a 2-μc charge at that point in space is joules.
Given,
V=400v, q=2-μc=2*,
U(potential energy)=V*q=400*2*=
joules.
The energy that an item retains due to its position in relation to other objects, internal tensions, electric charge, or other reasons is known as potential energy in physics. The gravitational potential energy of an object is based on its mass and the distance from the centre of mass of another object. Other common types of potential energy include the elastic potential energy of an extended spring and the electric potential energy of an electric charge in an electric field. The joule, denoted by the sign J, is the SI's definition of an energy unit.
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At a certain point in space there is a potential of 400 v. what is the potential energy of a 2-μc charge at that point in space? group of answer choices'
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Answer:
6.3 rev/s
Explanation:
The new rotation rate of the satellite can be found by conservation of the angular momentum (L):
The initial moment of inertia of the satellite (a solid sphere) is given by:
Where : is the satellite mass and r: is the satellite's radium
Now, the final moment of inertia is given by the satellite and the antennas (rod):
Where : is the antenna's mass and l: is the lenght of the antenna
So, the new rotation rate of the satellite is:
Therefore, the new rotation rate of the satellite is 6.3 rev/s.
I hope it helps you!