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julsineya [31]
3 years ago
13

Two speakers produce waves of the same wavelength that are in phase. 1) At a point midway between the speakers, you would expect

to hear: Louder sound Softer sound Alternating louder and softer sounds Louder or softer sounds depending on the wavelength No interference You currently have 0 submissions for this question. Only 10 submission are allowed. You can make 10 more submissions for this question. (Survey Question) 2) Briefly explain your answer to the previous questio
Physics
1 answer:
sweet [91]3 years ago
4 0

Answer:

louder

Explanation:

Since the two speakers producing same wavelength that are in phase,at the midpoint, the waves travel the same distance and hence path difference is zero

hence constructive interference takes place , due to this a louder sound is observed .

hence the answer is a) louder

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Compute the mean and maximum velocities for a liquid with a flow rate of 20 L/min in a 1.5-in nominal diameter sanitary pipeline
vlada-n [284]

Answer:

Mean velocity = 0.292 m/s

Maximum velocity = 0.584 m/s

The flow is laminar as Re = 229.2

Explanation:

D = 1.5 inches = 0.0381 m

Q = volumetric flow rate = 20 L/min = 0.000333 m³/s

Q = A × v

A = Cross sectional Area = πD²/4 = π(0.0381)²/4 = 0.00114 m²

v = average velocity

v = Q/A = 0.000333/0.00114 = 0.292 m/s

For flow in circular pipes, maximum velocity = 2 × average velocity = 2 × 0.292 = 0.584 m/s

To check if the flow is laminar or turbulent, we need its Reynolds number

Re = (ρvD)/μ

ρ = 1030 kg/m

v = 0.292 m/s

D = 1.5 inches = 0.0381 m

μ = 50 cP = 0.5 poise = 0.05 Pa.s

Re = (1030 × 0.292 × 0.0381)/0.05 = 229.2

For laminar flow, Re < 2100

For turbulent flow, Re > 4000

And 229.2 < 2100, hence, this flow is laminar.

7 0
3 years ago
The diagram shows Ned’s movement as he left his house and traveled to different places throughout the day. Which reference point
aleksley [76]

The pet store would be the reference point because it is where he started and it will not move. Hope this helped.

6 0
3 years ago
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The pulley system has a mechanical advantage of 5. Determine how much input force is required to achieve 1000 N of lifting force
Katen [24]
I don’t think I need anything from my dad to get my hair fixed so I’m just bored I don’t want you guys
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3 years ago
Which does not provide a significant voltage difference in a circuit?
Gnom [1K]

Answer:

<em>b - wires</em>

Explanation:

cells , dry cells , electrical outlets are all responsible for the varying electron pressure/ potential difference hence wires is our answer because wires are just conductors which can only influence resistance.

5 0
3 years ago
Four metals were kept in contact with each other. The table below shows the initial temperature of the metals.
disa [49]

Answer:

metal B

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5 0
2 years ago
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