If a ball leaves the ground with a vertical velocity of 5.46 m/s, how long does it take
1 answer:
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The Newton’s law Nikolas would use to come up with this idea is the <span>Third law that states:
</span><span>When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.
</span>
So, in this case, let's name the first Body A which is the skateboard and the second body B which is <span>the compressed carbon dioxide in a fire extinguisher. Then, as shown in the figure below, according to the Third law:
</span>
<span>
</span>
</span><span>When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.
</span>
So, in this case, let's name the first Body A which is the skateboard and the second body B which is <span>the compressed carbon dioxide in a fire extinguisher. Then, as shown in the figure below, according to the Third law:
</span>
</span>
Answer:
the force required to accelerate a 1,100kg car is 550N
Explanation:
Let are the number of turns in primary and secondary coil of the transformer such that,
A resistor R connected to the secondary dissipates a power
For a transformer,
...............(1)
The power dissipated through the secondary coil is :
.............(2)
Let are the new number of turns in primary and secondary coil of the transformer such that,
New voltage is :
...............(3)
So, new power dissipated is
So, the new power dissipated by the same resistor is 6400 watts. Hence, this is the required solution.