Answer:
In this reaction, sodium hydroxide (NaOH) disassociates into sodium (Na+) and hydroxide (OH-) ions when dissolved in water, thereby releasing OH- ions into solution. Arrhenius acids are substances which produce hydrogen ions in solution. Arrhenius bases are substances which produce hydroxide ions in solution.
You can’t solve it because you don’t have c in the question
Answer:
Part a)
Part b)
Explanation:
Part a)
Since the diver is moving under gravity
so here its acceleration due to gravity will be uniform throughout the motion
so here we will have
here we have
Part b)
at highest point of his motion the final speed will be zero
so we will have
Answer: 18000 coulombs
Explanation:
Given that:
Current, I = 5.0A
Electric charge Q = ?
Time, T = 1 hour
(The SI unit of time is seconds. So, covert 1.0 hour to seconds)
If 1 hour = 60 minutes and 60 seconds = 1 minute
Then, 1.0 hour = (60 x 60)
= 3600 seconds
Since electric charge, Q = current x time
i.e Q = I x T
Q = 5.0 A x 3600 seconds
Q = 18000 coulombs
Thus, 18000 coulombs of charge flows through the lamp in this time.
The mechanical impulse, of a force, is a vectorial magnitude that relates this force to the duration of its performance.
We have then:
I = F * delta t.
Since the impulse is a vector, we can then calculate the vector sum as:
I = ((20) * (0.2)) - ((0.4) * (2)) + ((24) * (0.05))
I = 4.4 N.s
Then, by definition:
I = delta p
I = delta m * v
I = m * delta v
I = m * (v-0)
Clearing v:
v = I / m
v = (4.4) / (0.10)
v = 44 m / s
answer:
the final velocity of the hockey puck is
v = 44 m / s
