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PIT_PIT [208]
3 years ago
13

Ysical Science A

Physics
2 answers:
lisov135 [29]3 years ago
3 0
Answer:
4.5 Cm
Hope this help
ikadub [295]3 years ago
3 0

Answer: 42.41 cm

Explanation:

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If a circuit has a power of 50 W with a current of 4.5 A, what is the resistance in the circuit?
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{ \rm{power, \: p = current \times p.d}} \\ { \rm{50 = 4.5 \times (current \times resistance)}} \\ { \rm{50 = 4.5 \times (4.5 \times r)}} \\ { \rm{resistance =  \frac{50}{ {4.5}^{2} } }} \\  \\ { \rm{resistance = 2.5 \:  ohms}}

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Explanation:

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Why does it take much longer time and distance to stop a moving ship in water than a moving car on the road
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A Meteorite Strikes On October 9, 1992, a 27-pound meteorite struck a car in Peekskill, NY, leaving a dent 22 cm deep in the tru
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Acceleration of the meteorite, a=-38409.09\ m/s^2

Explanation:

It is given that,

A Meteorite after striking struck a car, v = 0

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Distance covered by Meteorite, s = 22 cm = 0.22 m

We need to find the magnitude of its deceleration. It can be calculated using the third equation of motion as :

a=\dfrac{v^2-u^2}{2s}

a=\dfrac{-(130)^2}{2\times 0.22}

a=-38409.09\ m/s^2

So, the deceleration of the Meteorite is -38409.09\ m/s^2. Hence, this is the required solution.

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Which of the following is used in Sonata II's prepared piano?
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