Answer:
Volume of head = 1000 cm^3
Explanation:
The head of a normal person can be assumed as a sphere with radius 10 cm.
Volume of sphere
, where r is the radius.
We have approximate radius = 10 cm.
Approximate volume of head 
In the given options the closest value to the approximate volume is 1000 cm^3.
So, volume of head = 1000 cm^3
Answer:
8.9 units
Explanation:
The magnitude of a 3-D vector B can be calculated by using the formula:
where 
are the x, y and z components of the vector, respectively.
For the vector in the problem:
Substituting into the equation, we find the magnitude of B:
So, the magnitude of B is 8.9 units.
It would react with metals to form hydrogen gas.
Explanation:
A compound that releases hydrogen ions in solution would most likely react with metals to form hydrogen gas.
This compound is called an acid.
- An acid is any compound that produces excess hydrogen ions in solutions.
- Most of the common acids reacts with electropositive metals to produce hydrogen gas.
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Acid brainly.com/question/11062486
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The answer is C -
because reversibility means when taking a break it'll be hard to get back on schedule
