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3 years ago

What does the speed of sound depend on?

Physics

2 answers:

mr Goodwill [35]3 years ago

6 0

I believe it's 'A'. Hopefully this helps!~ :)

cluponka [151]3 years ago

5 0

I believe your answer would be "b"

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kondaur [170]

Answer:

true

Explanation:

or they will die to death

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Please help SUVAT question. answer + detailed explanation needed

oee [108]

Answer:

4 s

-24.5 m/s

Explanation:

y = y₀ + v₀ t + ½ at²

v = at + v₀

where y is the final position,

y₀ is the initial position,

v₀ is the initial velocity,

a is the acceleration,

and t is time.

Given:

y = 0 m

y₀ = 19.6 m

v₀ = 14.7 m/s

g = -9.8 m/s²

Find: t, v

Substitute values into the first equation and find t:

y = y₀ + v₀ t + ½ at²

0 = 19.6 + 14.7 t + ½ (-9.8) t²

0 = 19.6 + 14.7 t − 4.9 t²

0 = t² − 3 t − 4

0 = (t − 4) (t + 1)

t = -1 or 4

Since t must be positive, t = 4 seconds.

Now use the second equation to find v:

v = at + v₀

v = (-9.8) (4) + 14.7

v = -24.5

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4 years ago

A wood pipe having an inner diameter of 3 ft. is bound together using steel hoops having a cross sectional area of 0.2 in.2 The

WINSTONCH [101]

Answer:

31.67 in

Explanation:

Given:

Diameter of the pipe, D = 3ft = 36 in

cross-sectional area of the steel = 0.2 in²

Note: Refer to the figure attached

From the free body diagram represented in the figure, we have

ΣFx = 0

pressure × projected area = 2 × Force in steel

Now, the projected area = spacing (s) × diameter of the wood pipe

force in steel = stress in steel (σ) × cross-sectional area of the steel

on substituting the values we get

4 ksi × (s × 36 in) = 2 × σ × 0.2 in²

also, allowable hoop stress = 11.4 ksi

thus,

σ = 11.4 ksi = 11.4 × 10³ psi

therefore, we have

4 psi × (s × 36 in) = 2 × 11.4 × 10³ psi × 0.2 in²

thus,

s = 31.67 in

hence the maximum spacing is 31.67 in

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Answer:

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