Answer:
559.5 N
Explanation:
Applying,
v² = u²+2gs............. Equation 1
Where v = final velocity,
From the question,
Given: s = 5.10 m, u = 0 m/s ( from rest)
Constant: 9.8 m/s²
Therefore,
v² = 0²+2×9.8×5.1
v² = 99.96
v = √(99.96)
v = 9.99 m/s
As the diver eneters the water,
u = 9.99 m/s, v = 0 m/s
Given: t = 1.34 s
Apply
a = (v-u)/t
a = 9.99/1.34
a = -7.46 m/s²
F = ma.............. Equation 2
Where F = force, m = mass
Given: m = 75 kg, a = -7.46 m/s²,
F = 75(-7.46)
F = -559.5 N
Hence the average force exerted on the diver is 559.5 N
Explanation:
Given that,
Number of sodium ions at the negative electrode, 
Number of chloride ions at the positive electrode, 
(a) The current flowing in the circuit is due to the positive as well as negative charges such that total charge becomes:


Q = 0.01056 C
The current is given by :


So, the current passing between the electrodes is 10.56 mA.
(b) The direction of electric current is towards negative electrodes.
3. Distance is a quantity that is always a vector.
B.
I believe it is velocity correct me if I’m wrong