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Zanzabum
3 years ago
6

Say you dropped a cannonball from the 17–meter mast of a ship sailing at 2 meters/second. How far from the base of the mast will

the ball land?
Physics
1 answer:
vichka [17]3 years ago
3 0
It should land at the base of the mast. the cannonball, whilst in your hand, is travelling at the same rate as the boat in the horizontal plane ie at 2m/s. as it leaves you hand it should retain that velocity and therefore land right underneath where it was dropped. this assumes all other things are equal, eg there is no air resistance etc that might cause the ball to accelerate or decelerate.
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A tourist averaged 82km/hr for a 6.5h trip in her volkswagen. how far did she go?
Whitepunk [10]
82 ÷ 6.5 = 12.615384615384... repeating
round = 12.6
12.6 · 6.5 = 81.9
round = 82
She went an average of 12.6 km an hour
Hope this helps! ;)
4 0
2 years ago
Suppose we measure the energy stored in some inductor to be E when there is a current I running through it. If I double the curr
slavikrds [6]

Answer:

If I double the current in the inductor, the new total energy will become 4E (option f).

Explanation:

The coil or inductor is a passive component made of an insulated wire that stores energy in the form of a magnetic field due to its form of coiled turns of wire, through a phenomenon called self-induction. In other words, inductors store energy in the form of a magnetic field. The energy stored in the space where there is a magnetic field in the inductor is:

E=\frac{1}{2} *L*I^{2}

where E is Energy [J], L is Inductance [H] and I is Current [A].

If you double the current in the inductor, then the new value of the current is I'= 2*I. So replacing the new total energy is:

E'=\frac{1}{2} *L*I'^{2}=\frac{1}{2} *L*(2*I)^{2}=\frac{1}{2} *L*4*I^{2}=4*\frac{1}{2} *L*I^{2}

Then:

E'=4*E

<em><u>If I double the current in the inductor, the new total energy will become 4E (option f).</u></em>

3 0
3 years ago
What is the resolution of three skeleton key?
Arisa [49]
It depends because it’s might be lolilolololol 21212132
3 0
3 years ago
okay so there is a wheel and it shows it when its high, in the middle, and below. my question is when is its potenial energy the
earnstyle [38]
At the highest point 


cheers

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A=m/s^2(meter per second square)
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3 years ago
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