The cell probably needs protien and minerals (or vitamins too)
Answer:
The force the ceiling exert on the hook is 321.67 N
Explanation:
Here we have the weights being 75 N and 125 N
The weight of the pulley = 80 N
Total weight hung from the ceiling = 75 + 125 + 80 = 280 N
Therefore since the forces acting on the ceiling tends to act downwards as they are the forces due to weights, we have
The force on the
T₁ - 125 = m₂a =
m₂ = 125/9.8 = 12.76 kg
Similarly T₂ - 75 = m₁a, m₁ = 7.65 kg
acceleration is given by
= 2.042 m/s²
Therefore
T₁ - 125 = m₂a = 12.76 × 2.042 = 26.04 N and
T₁ = 125 + 26.04 = 151.04 N
Similarly T₂ - 75 = m₁a = 7.65 × 2.042 = 15.63 N
T₂ = 15.63 + 75 = 90.63 N
Force on hook = Force exerted by ceiling on hook = T₁ + T₂ + Weight of pulley = 151.04 + 90.63 + 80 = 321.67 N
A. Relaxing under a tree.
The parasympathetic nervous system is known as the “rest and digest” system. Activities that require as little movement as possible help the heart rate to slow down. The other activities would be associated with the Sympathetic nervous system which is known as the “fight or flight,” or when your heart rate is up and running.
Hi there!
Recall the equation for work given a potential difference and charge:
W = Work (J)
q = charge (C)
V = Potential difference (V)
The work is equivalent to the change in KINETIC ENERGY, and only depends on the particle's charge and the potential difference that it experiences. Mass has no impact on this.
Thus:
This is equivalent to: