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mrs_skeptik [129]
3 years ago
11

What does the person in back of the ambulance experience? A) a lower frequency of the siren B) a lower amplitude of the siren C)

a higher frequency of the siren Eliminate D) a higher amplitude of the siren
Physics
2 answers:
hoa [83]3 years ago
5 0

The answer to your question is "A. a lower frequency of the siren.

Because the person in back of the ambulance will hear a lower frequency of the siren. This is because the waves are stretched out. A longer wavelength results in a lower frequency.

denpristay [2]3 years ago
4 0

Answer: The correct answer is A.

Explanation:

When there is a relative motion between the source and the observer then there will be change in the frequency or wavelength of the wave. This phenomenon is called Doppler effect.

For example, when the source and the observer are moving away from other then the frequency decreases in this case.

In the given problem, the person is in the back of the ambulance. In this case, the person in the back of the ambulance will listen a lower frequency of the wave. There will be longer wavelength.

Therefore, the correct answer is A.

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The circuits, P and Q, show two different ammeter-voltmeter methods of measuring resistance. Suppose the ammeter has a resistanc
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Answer:

Uncorrected values for

For circuit P

R = 2.4 ohm

For circuit Q

R = 2.4 ohm

Corrected values

for circuit P

R = 12 OHM

For circuit Q

R = 2.3 ohm

Explanation:

Given data:

Ammeter resistance 0.10 ohms

Resister resistance 3.0 ohms

Voltmeter read 6 volts

ammeter reads 2.5 amp

UNCORRECTED VALUES FOR

1) circuit P

we know that IR =V

R = \frac{6}{2.5} - 2.4 ohm

2) circuit Q

R = 2.4 ohm as no potential drop across ammeter

CORRECTED VALUES FOR

1) circuit p

IR = V

\frac{3R}{R+3} \times 2.5 = 6

R= 12 ohm

2) circuit Q

I\times (R+0.1) =V

R+0.1 =\frac{6}{2.5}

R = 2.3 ohm

5 0
3 years ago
A uniform rod of length 0.8 m and mass 1.4 kg, has two point masses at each end. The point mass on the left end has a mass 1.2 k
VladimirAG [237]

Answer:

Explanation:

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the answer is

CI2 because its 70.


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3 years ago
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antiseptic1488 [7]
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</span>F= \frac{Gm_1m_2}{r^2}<span>
where G is the gravitational constant, m1 and m2 the masses of the two objects, r their separation. If we take the Earth as one of the two objects, then m1 represents the Earth's mass, m2 the mass of the object and r the distance between the center of Earth and the object, and F is the gravitational force at which the Earth attracts the object.</span>
8 0
2 years ago
Read 2 more answers
PLEASE ANSWER ASAP
neonofarm [45]

Answer:

2.55sec

Explanation:

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6 0
2 years ago
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