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zvonat [6]
4 years ago
6

As you move toward a warning siren, the pitch _____.

Physics
2 answers:
STALIN [3.7K]4 years ago
8 0

Answer: Increases.

Explanation:

Warning siren is generally used to make people alert of danger. Danger can be anything associated with the health and hazard.

Warning siren can be due to tsunami, earthquake, fire, flood, et cetera. The pitch of siren is low when a person is afar from the siren.

As the person moves close to the siren, the pitch of siren increases.

sleet_krkn [62]4 years ago
4 0

Answer:

As you move toward the siren the pitch should get louder

Explanation:

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Choose the best description of the attraction between you and your classmate.
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Answer:

The correct option is;

D. There is not enough information to answer this question

Explanation:

The universal gravitational constant = 6.67408 × 10⁻¹¹ 3³/(kg·s²)

For an in between distance of 1 m and equal masses of 60 kg, we have;

F = G \times \dfrac{m_{1}  \times m_{2}}{r^{2}} = 6.67408 \times 10^{-11}  \times \dfrac{60 \times 60}{1^{2}}  \approx  2.403 \times 10^{-7} N

The gravitational attraction ≈ 2.403 × 10⁻⁷ N, which does not correspond with the answers, therefore, the best option is that there is not enough information to answer this question.

5 0
3 years ago
Which of the following expressions is equivalent to the expression 2(x + 5)? x + 7 x + 10 2x + 5 2x + 10
bezimeni [28]

Answer:

d) 2x+10

Explanation:

2(x+5)\\=2x+10

6 0
4 years ago
A tuning fork with a frequency of 675 Hz resonates in an air column when the length of the tube is 17.0 cm and again when the le
maria [59]

Answer:

Explanation:

8 0
3 years ago
At 19 ºC a volume of air takes us 9.0 mL in an expandable container. What is its volume after it is heated up to 50. ºC?
Katena32 [7]
According to Charles law, we know, at constant pressure, volume is directly proportional to temperature. 
So, <span>V/T = constant 
</span>
V₁/t₁ = V₂/t₂
V₁t₂ = V₂t₁

Here, we have: V₁ = 9 mL
V₂ = ?
T₂ = 50+272 = 323 K
T₁ = 19+273 = 292 K

Substitute their values into the expression:
9 × 323 = V₂ × 292
V₂ = 2907 / 292
V₂ = 9.95
After rounding-off to unit place value, it would be equal to 10 mL

So, In short Option C would be your correct answer.

Hope this helps!
5 0
3 years ago
Describe two methods a researcher can use to avoid obtaining a nonrepresentative sample
exis [7]

Answer:

sorry i cant understand ur questions okk g

3 0
4 years ago
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