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Andreas93 [3]
2 years ago
12

Which force is needed to give a 0.25-kg arrow an acceleration of 196 m/s2?

Physics
2 answers:
ludmilkaskok [199]2 years ago
8 0

Force = mass × accelaration


Force = 0.25Kg × 196 m/s²


Force = 49 Newtons

astra-53 [7]2 years ago
4 0

0.25 N hope it helps
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Answer:

a) 1.517\times10^{-11} s

b) 3.41 mm

Explanation:

a)

We take the speed of light, c = 3.0\times10^8 m/s and the refractive index of glass as 1.517.

Speed = distance/time

Time = distance/speed

Refractive index, n = speed of light in vacuum / speed of light in medium

n=\dfrac{c}{s}

s=\dfrac{c}{n}

t=\dfrac{d}{c/n}

t=\dfrac{dn}{c}

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b)

We take the refractive index of water as 1.333.

Speed in water = speed in vacuum / refractive index of water

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d=\dfrac{3\times10^{-3}\times 1.517}{1.333}

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Since our temperature on a cool spring day was 13.0°C, our new temperature must be T_f=T_0+\Delta T = 35.14°C

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