The number of significant digits to the answer of the following problem is four.
<h3>What are the significant digits?</h3>
The number of digits rounded to the approximate integer values are called the significant digits.
The following problem is
(2.49303 g) * (2.59 g) / (7.492 g) =
On solving we get
= 0.86184566204
The answer is approximated to 0.86185
Thus, the significant digits must be four.
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Electrical energy is and 100% correct answer
<u>Answer:</u>
"Where friction or rubbing results in the transfer of electrons between particles, objects can become negatively or positively charged."
<u>Explanation:</u>
The motion resistance of one moving object with respect to another is called as "Friction". It isn't a basic force, like gravity or electromagnetism. Alternatively, scientists believe it is the product of the electromagnetic attraction in two touching surfaces between charged particles.
The friction have formula:
Friction force (<em>f </em>) = coefficient of friction × normal force (N)
For an instances when one ride a bicycle, an example of rolling friction is the contact between the wheel and the way.
The pressure drop in pascal is 3.824*10^4 Pascals.
To find the answer, we need to know about the Poiseuille's formula.
<h3>
How to find the pressure drop in pascal?</h3>
- We have the Poiseuille's formula,
where, Q is the rate of flow, P is the pressure drop, r is the radius of the pipe, 
is the coefficient of viscosity (0.95Pas-s for Glycerin) and l being the length of the tube.
- Thus, the pressure drop will be,
Thus, we can conclude that, the pressure drop in pascal is 3.824*10^4 Pascals.
Learn more about the Poiseuille's formula here:
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