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3 years ago

11

When a sound source is moving toward the observer, the observer will hear a higher pitch. This is due to

2 answers:

Goryan [66]3 years ago

5 0

Number one a and b are automatically out if you decrease the pitch or frequency you wont hear it louder it does not add up ok?
number 2 the answer would be C the higher the frequency the higher the pitch the lower the frequency the lower the pitch this just comes back to common sense. for example you cant decrease the frequency and than expect a louder pitch its like saying I am going to smash the key on this piano with all my strength and it will make a small very low pitch sound you get what I mean so your answer would indeed be C.

Svetach [21]3 years ago

3 0

Answer:

A decrease in the frequency of the sound wave

Explanation:

:)

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A 45.0-kg woman stands up in a 69.0-kg canoe that is 5.00 m long. She walks from a point 1.00m from one end to a point 1.00 m fr

Sonja [21]

Answer:

The center of the canoe is displaced 1.18m in the opposite direction to the movement of the woman.

Explanation:

Let's assume the woman is on the left of the canoe and that the origin of our system is in the middle of the canoe.

The position of the center of gravity of the whole system remains in the same position, so:

$m_{c}*r_{oc}+m_{w}*r_{ow}=m_{c}*r_{fc}+m_{w}*r_{fw}$

Since our origin is in the middle of the canoe, all of the positions become:

$r_{oc}=0$

$r_{ow}=-(2.5-1)=-1.5$

$r_{fc}=-X$ (It is <em>negative</em>, assuming that the canoe will move to the <em>left</em>).

$r_{fw}=-X+(2.5-1)=-X+1.5$

Being X the displacement we want to find.

Replacing all of these values, we get:

$69*0+45*(-1.5)=69*(-X)+45*(-X+1.5)$

Solving for X:

X=1.18m Since the result is positive, we conclude that our assumption was correct.

6 0

3 years ago

Cardiorespiratory endurance involves these systems Group of answer choices A.Respiratory and digestive B.Digestive and circulato

yaroslaw [1]

C. Circulatory and respiratory

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3 years ago

A parallel-plate air capacitor is connected to a constant-voltage battery. If the separation between the capacitor plates is dou

Oliga [24]

Answer:

Drop to half of the previous value

Explanation:

Energy stored in capacitor is inversly propotional to the distance between the plates.

3 0

4 years ago

A constant force moves an object along the line segment from to . Find the work done if the distance is measured in meters and t

vladimir2022 [97]

This question is incomplete, the complete question is;

Flag

A constant force F = 6i+8j-6k moves an object along a straight line from point (6, 0, -10) to point (-6, 7, 2).

Find the work done if the distance is measured in meters and the magnitude of the force is measured in newtons.

Answer:

the work done is -88 J

Explanation:

Given the data in the question;

we know that;

Work done = F × S

where constant force F = ( 6i + 8j - 6k )

S = ( -6i + 7j + 2k ) - ( 6i + 0j - 10k )

S = ( (-6i - 6i) + (7j - 0j) + ( 2k - ( -10k) ) )

S = ( -12I + 7j + 12k )

so

Work force = ( 6i + 8j - 6k ) × ( -12I + 7j + 12k )

Work force = ( 6 × -12 ) + ( 8 × 7 ) + ( -6 × 12 )

Work force = -72 + 56 - 72

Work force = -88 J

Therefore, the work done is -88 J

8 0

3 years ago

Convert 1600.0m to km

Dominik [7]

The answer should be 1.6 kilometers.

3 0

3 years ago

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