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FinnZ [79.3K]
3 years ago
6

If the beam is made from wood having an allowable shear stress τallow = 390 psi , determine the maximum magnitude of p. set d =

4 in.

Physics
1 answer:
xenn [34]3 years ago
3 0

Answer:

19593.6 p

Explanation:

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A 2,700-kg truck runs into the rear of a 1,000-kg car that was stationary. The truck and car are locked together after the colli
Leto [7]

Answer:

6200 J

Explanation:

Momentum is conserved.

m₁ u₁ + m₂ u₂ = m₁ v₁ + m₂ v₂

The car is initially stationary.  The truck and car stick together after the collision, so they have the same final velocity.  Therefore:

m₁ u₁ = (m₁ + m₂) v

Solving for the truck's initial velocity:

(2700 kg) u = (2700 kg + 1000 kg) (3 m/s)

u = 4.11 m/s

The change in kinetic energy is therefore:

ΔKE = ½ (m₁ + m₂) v² − ½ m₁ u²

ΔKE = ½ (2700 kg + 1000 kg) (3 m/s)² − ½ (2700 kg) (4.11 m/s)²

ΔKE = -6200 J

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3 years ago
True or False. The Magnitude of the induced voltage in a coil of wire depends on how quickly the magnetic flux through the coil
EleoNora [17]

Answer:

Yes, its true

Explanation:

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5 0
3 years ago
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Explain two reasons why astronomers are continually building larger and larger telescopes. Explain two reasons why astronomers a
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Answer:

* Larger mirrors collect more light and therefore fainter and more distant objects can have enough intensity to be detected

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Explanation:

Refracting telescopes get bigger every day for two main reasons.

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Answer:

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Explanation:

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coldgirl [10]

Answer:

The correct answer is

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Hope this helps....

Have a nice day!!!!

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3 years ago
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