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Sedaia [141]
4 years ago
12

The Doppler effect suggests that sound waves are relative to the observer. You know if an object is coming or going from the sou

nd it makes. Light waves follow the Doppler effect also. However, instead of sound changing, you know if an object is coming or going _____.
a-from the brightness of the light
b- from the color of the light
c- from the twinkle of the light
d- from the sound of the light
Physics
2 answers:
mrs_skeptik [129]4 years ago
5 0
A. Form the Brightness of the light
Serhud [2]4 years ago
3 0

a.....................

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A 1750-kilogram cars travels at a constant speed of 15.0 meters per second around a horizontal, circular track with a radius of
bulgar [2K]

m = mass of the car moving in horizontal circle = 1750 kg

v = Constant speed of the car moving in the horizontal circle = 15 m/s

r = radius of the horizontal circular track traced by the car = 45.0 m

F = magnitude of the centripetal force acting on the car

To move in a circle . centripetal force is required which is given as

F = m v²/r

inserting the above values in the formula

F = (1750) (15)²/(45)

F = (1750) (225)/(45)

F = 1750 x 5

F = 8750 N

6 0
3 years ago
Is 2/2 1 or 0? please help lol
Komok [63]

Answer:

1.

Explanation:

Hello!

In this case, for such mathematical operations, we can wee that the slash represents a fraction or a division, say 8 ÷ 4 = 2, 6 ÷ 3 = 2, 20 ÷ 4 = 5, etc. In such a way, since the operation 2/2, represents 2 ÷ 2, it is clear that two is once in 2, therefore, the result is:

2 ÷ 2 = 1.

Best regards!

4 0
3 years ago
The influence of blood vessel diameter on peripheral resistance is ________.
NeX [460]

Answer:

The influence of diameter of the blood vessel on peripheral resistance is significant because resistance is inversely proportional to the fourth power of the diameter.

Explanation:

The influence of diameter of the blood vessel on peripheral resistance is significant because the relation between the peripheral resistance and the diameter is given as, resistance is inversely proportional to the fourth power of the diameter. Thus, with small increase or decrease in the value of diameter, the peripheral resistance may vary by a significant amount.

6 0
3 years ago
Which of these is a biotic factor? <br> A) topography <br> B) soil <br> C )air <br> D)bacteria
vitfil [10]
D I might be wroung .....i think this so the answer because biotic are all living things and bacteria is living
7 0
3 years ago
Help me it’s for a test I have??
Volgvan
1. C
2. A
3. E
4. D
5. B
6. F
i might have 2 and 6 mixed up, not completely sure tho
4 0
3 years ago
Read 2 more answers
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