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3 years ago

2. A 4-kg gun shoots a 0.1-kg bullet at 400 m/s. Find the recoil speed of the gun.

Physics

1 answer:

aliya0001 [1]3 years ago

7 0

Answer:10m/s

Explanation:

M=mass of gun=4kg

U=recoil velocity of gun

m=mass of bullet=0.1kg

V=velocity of bullet=400m/s

M x U=m x V

4 x U=0.1 x 400

4xU=40

Divide both sides by 4

(4xU)/4=40/4

U=10m/s

Recoil velocity=10m/s

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Answer:

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3 years ago

200 J of work is done when a force is applied to an object and the object moves 10 m to the right. How much Force was applied?

ArbitrLikvidat [17]

Answer:

20N

Explanation:

Given parameters:

Work done = 200J

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Unknown:

Amount of force applied =?

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4 years ago

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2 years ago

Based on the evidence for the impact theory, what was the most probable order of events for the collision that led to the format

anastassius [24]

Answer:

Answered

Explanation:

According to the impact theory, a glancing collision between a Mars-sized object and Earth led to the formation of the Moon. The iron core of Earth had formed before this collision, leading to the similarity between the composition of the Moon and Earth's mantle. After the collision, any iron core of the Mars-sized object would have been left behind on Earth and eventually merged with Earth's core. The Moon then formed out of the debris thrown into space by the collision.

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3 years ago

A series LRC circuit consists of a 12.0-mH inductor, a 15.0-µF capacitor, a resistor, and a 110-V (rms) ac voltage source. If th

finlep [7]

Answer:

61.85 ohm

Explanation:

L = 12 m H = 12 x 10^-3 H, C = 15 x 10^-6 F, Vrms = 110 V, R = 45 ohm

Let ω0 be the resonant frequency.

$\omega _{0}=\frac{1}{\sqrt{LC}}$

$\omega _{0}=\frac{1}{\sqrt{12\times 10^{-3}\times 15\times 10^{-6}}}$

ω0 = 2357 rad/s

ω = 2 x 2357 = 4714 rad/s

XL = ω L = 4714 x 12 x 10^-3 = 56.57 ohm

Xc = 1 / ω C = 1 / (4714 x 15 x 10^-6) = 14.14 ohm

Impedance, Z = $\sqrt{R^{2}+\left ( XL - Xc \right )^{2}}$

Z = \sqrt{45^{2}+\left ( 56.57-14.14 )^{2}} = 61.85 ohm

Thus, the impedance at double the resonant frequency is 61.85 ohm.

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3 years ago