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3 years ago

Will name brainliest and give 50 points

Physics

2 answers:

otez555 [7]3 years ago

5 0

Answer:

Explanation:

Natalija [7]3 years ago

3 0

A I think it was sorry if not

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Why does sound travel slower at a cold temperature?

tatyana61 [14]

<h2>Answer:</h2><h2>It is due to a refractment of light.</h2>

Sound moves faster in warmer air than colder air the way bends away from the warm air and back towards of air.

7 0

3 years ago

Read 2 more answers

The water line from the street to my house is 1 inch diameter and made of PVC (i.e. smooth). The line is roughly 450 ft long. Th

jekas [21]

Answer:

The right solution is "126 Psi".

Explanation:

The given values are:

P₁ = 130 psig

i.e.,

= $130\times 6.894$

= $896.22 \ Kpa$

or,

= $896.22\times 10^3 \ Pa$

Z₂ = 10ft

= 3.05 m

$\delta$ = 1000 kg/m³

According to the question,

Z₁ = 0

V₁ = V₂

As we know,

⇒ $\frac{P_1}{\delta_g} +\frac{V_1^2}{2g} +Z_1=\frac{P_2}{\delta_g} +\frac{V_2^2}{2g} +Z_2$

On substituting the values, we get

⇒ $\frac{P_1}{\delta_g} +0+0=\frac{P_2}{\delta_g} +0+Z_2$

⇒ $\frac{896.22\times 10^3}{1000\times 9.8} =\frac{P_2}{1000\times 9.8} +3.05$

⇒ $P_2=866330 \ P_a$

i.e.,

⇒ $=866330\times 0.000145$

⇒ $=126 \ Psi$

8 0

2 years ago

Does the cereal or the milk go first? <br><br>

vazorg [7]

Answer:

Cereal

Explanation:

Nobody puts the milk first that's just communism

7 0

2 years ago

Read 2 more answers

Atmospheric pressure on the peak of Mt. Everest can be as low as 0.197 atm, which is why

lbvjy [14]

Answer:2,030

Explanation:

40 atm x 10.0 L = 400

400/0.197 atm = 2,030

7 0

3 years ago

Rock X is released from rest at the top of a cliff that is on Earth. A short time later, Rock Y is released from rest from the s

MArishka [77]

Answer:

<h2>D) S increases because at all times Rock X falls with a greater speed than Rock Y</h2>

Explanation:

As we know that Stone X is dropped first and then after some time stone Y is dropped

Now we have

$v_x = gt_1$

similarly for Y

$v_y = g(t_1 - \Delta t)$

now the relative acceleration of two stones while they are in air is ZERO

also we know from above equations

$v_x > v_y$

so the separation between two stones will keep on increasing as the speed of X is more than the speed of Y

5 0

3 years ago