Mechanical advantage is a quantity that measures how much a machine multiplies force or distance.
99.0km/h =27.5m/s (this is the initial speed)
The final speed is zero
The distance is 50.0m
Therefore you use the formula:
vfinal²=vinitial²+2ad
a=(vfinal²-vinitial²)/2d
= (0²-27.5²)/(2x50.0)
=-7.5625 or in correct sigdigs -7.56m/s²
Hope this helps!
<h3><u>Answer;</u></h3>
They are anions.
<h3><u>Explanation</u>;</h3>
- Polyatomic ions are the ions that contain 2 or more different atoms that are covalently bonded to each other.
- Examples include; Nitrate : NO₃⁻, Sulfate : SO₄²⁻,Hydroxide : OH⁻, and Phosphate : PO₄³⁻, etc.
- Polyatomic ions are tightly bound group of atoms that has a positive or negative charge and behaves as a unit.
Answer:
The density is
Explanation:
From the question we are told
The radius of the cylinder is
The length of the cylinder is
The density of the glucose is
The depth is
The net force on the string is
The net force on the string is mathematically represented as
Here is the force due to the weight of the cylinder
Which mathematically evaluated as
Where is the volume of liquid displaced which is equal to the volume of the cylinder which is mathematically represented as
=>
is the buoyant force acting on the cylinder due to the glucose
So substituting into formula for