Answer:
The acceleration of the woman is 0.44 m/s²
Explanation:
Given;
mass of the woman, m₁ = 90 kg
mass of the boy, m₂ = 60 kg
The force applied by the boy, f₂ = 40 N
The net horizontal force on the woman = 40 N
Apply Newton's second law of motion to determine the acceleration of the woman;
f = ma
a = f / m
a = 40 / 90
a = 0.44 m/s²
Therefore, the acceleration of the woman is 0.44 m/s²
Answer:
The near point is 
Explanation:
From the question we are told that
The power is 
The distance from the eye is 
The distance of the book from the eye is 
Generally the focal length of the glasses is
=> 
=> 
=> 
The object distance is evaluated as
=> 
=> 
The image distance is evaluated from lens formula as
=> 
=> 
=> 
The near point is evaluated as
=> 
=>
Explanation:
The balanced chemical equation is given as:
2H₂O₂ → O₂ + 2H₂O
А There are two peroxide molecules on the reactant side.
The statement is correct because the left hand side is the reactant side. We can read the reaction as;
2 molecules of hydrogen peroxide decomposed to given 1 molecule of oxygen gas and 2 molecules of water .
D Mass must be conserved so there are an equal number of molecules in the reactants and products.
E Mass must be conserved so there are an equal number of atoms in the reactants and products.
Since the chemical equation is balanced, choices D and E are correct. The reaction will have equal number of molecules and atoms on both sides of the expression.
Answer:
3.91
Explanation:
Given that
Final reading of the voltmeter, V2 = 45 v
Initial reading of the voltmeter, V1 = 11.5 v
The dielectric constant k, of a material is usually given as
k = V2/V1
k = 45 / 11.5
k = 3.91
Therefore, the dielectric constant of the material as we've calculated above is sure to be 3.91.
I hope that helps you understand
Hi there!
In this instance, the centripetal force experienced by the moon is equivalent to the gravitational force.
Thus:
Centripetal acceleration, according to Newton's Second Law:
Therefore:
