The velocity after 30s would be 38. 99 m/s
<h3>How to calculate the velocity</h3>
Using the formula
F = m Δ V/ t
Where, F = force = 76. 7N
m = mass = 7. 25kg
Δv = change in velocity= V2 - V1 and V1 = 2. 25 m/s
t = time = 3. 50s
76. 7 = 7. 25 × (v2 - 2. 25) / 3. 50
76. 7 = 2. 07 × (v2 - 2. 25)
make v2 subject of formula
v2 - 2. 25 = 76. 07 ÷ 2. 07
v2 = 36. 74 + 2. 25
v2 = 38. 99 m/s
Thus, the velocity after 3. 50s would be 38. 99 m/s
Learn more about change in velocity here:
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<span>D) The spring has potential energy and the hands have kinetic energy. </span>
<span>The plates make up Earth's outer shell, called the lithosphere. (This includes the crust and uppermost part of the mantle.) Churning currents in the molten rocks below propel them along like a jumble of conveyor belts in disrepair. Most geologic activity stems from the interplay where the plates meet or divide.</span>
The MCB of a rupas room is tripped and keeps on tripping again and again, and if it is a domestic circuit, what could be the reason for this phenomenon?
The reason could be a short circuit which is resulting in higher level of currents to pass through the MCB which is resulting in trip every time.
OR
The MCB is faulty and might need a replacement.
To Diagnose the problem further more.
Turn off all the switches in rupas room and then try turning on the MCB. If it trips again then MCB is faulty (Subjective to the fact there everything was normal before this issue and no signs of short circuit or spark in wiring were observed)
If MCB does not trip in point 1 then Turn ON all the switches one by one. This shall give you the cause of problem.
