The dependent in this case would be the type/quality of chairs as that is what you are changing.
Answer:
N = 1364 N
Explanation:
given data
accelerate upward = 5.70 m/s²
mass = 88.0 kg
solution
normal force is in upward direction so, weight of the student in downward direction and acceleration is in upward direction so formula is express as
N - mg = ma ...........................1
N = m × (g+a)
put here value
N = 88.0 × (9.8 + 5.70)
N = 1364 N
Answer: Positive.
Explanation:
Given that the ion has a charge of +3.2 x 10^14 C.
When another charge is brought near it, it experiences a repulsive electrostatic force. The other charge brought near the ion must be positive.
This is because the electric field which is a region of space created by the positive ion with a charge of +3.2 x 1014 C have electric lines of force moving outward. Therefore, when another charge is brought near the positive ion, it will either attract or repel depending on the charge of the ion brought into the electric field created by the positive ion.
If the charge on the second ion is also positive, the electric lines of force will be in the same direction as that on the first ion and will their repel. However, if the second ion is negative, the electric field lines are in the opposite direction to that of the first positive ion, thereby creating an attractive electrostatic force in the electric field.
In summary, like charges repel, unlike charges attract.
Answer:
E) the flow of energy due to a temperature difference.
Explanation:
Heat can be described as the flow of energy due to a temperature difference.
Which is expressed mathematically as;
H = MCΔT
Where;
H is the quantity of heat in a body, measured in Joules
M is the mass of the body, measured in kg
C is the specific heat capacity of the body, J/kg.K
ΔT is change in temperature or temperature difference.
So, heat energy in any system flows from a hotter region to a colder region due to temperature difference.
E) the flow of energy due to a temperature difference.