The hydrometer displays the density of the liquid you stick it in, COMPARED TO WATER.
If you stick it in pure water, it should read 1.00 . This is a good way to check your hydrometer and see whether it's reading correctly ("calibrated").
Answer:
Explanation:
The data given in the question is
Charge : q =
Electric field Strength : E = 
Electrical potential Energy : U = 
Let, the distance be "d"
So, the formula for Electrical potential energy is
Simplified formula for distance become
Now , insert the value
or,
Rounding off
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❖ The correct answer choice is A. A chemical change has occurred because new compounds have been produced.
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<span>It is the lowest velocity which a body must have in order to escape the gravitational attraction of a particular planet or other object.
Every planet has their own corresponding escape velocities. Example - Earth has escape velocity of 11.2 Km/s. It means, if you want to leave the Earth's gravitational field then it's the lowest speed which you need to acquire otherwise you wouldn't do that!
Hope this helps!</span>
<span>The correct answer is an incident ray. The ray that is reflected is always reflected at the same angle at which the incident ray hits the surface. This of course only applies if it hits a straight surface, since hitting a lense would be different as it might reflect under a different angle or it might not even reflect.</span>
