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telo118 [61]
2 years ago
7

What is the acceleration of a 7 kg mass pushed by a 3.5 N force?

Physics
1 answer:
defon2 years ago
4 0

Answer:

0.5m/s²

Explanation:

F =m x a

3.5 = 7 x a

a = 3.5 /7

a = 0.5m/s ²

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Which property of sound waves decreases as the square of the distance from the source increases?
Vitek1552 [10]

Answer:

Intensity

Explanation:

The intensity of a sound wave is equal to the ratio between to the power emitted by the source divided by the area of the spherical surface through which the wave propagates:

I=\frac{P}{4\pi r^2}

where

P is the power

4\pi r^2 is the area of the spherical surface

r is the distance from the source

As we see from the formula, the intensity is inversely proportional to the square of the distance from the source:

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so, intensity is the correct answer.

3 0
3 years ago
An object moving with a constant
jeka57 [31]

Answer:

Acceleration:

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From third equation:

{ \bf{ {v}^{2}  =  {u}^{2}  + 2as}} \\ { \tt{s =  \frac{ {20}^{2}  -  {10}^{2} }{2 \times 2} }} \\   = { \tt{s = 75 \: m}}

5 0
2 years ago
Read 2 more answers
If a body starts moving from rest its<br>initial velocity is<br>ų <br>V<br>zero<br>m/s​
Artist 52 [7]

Answer:

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6 0
2 years ago
A pipe is horizontal and carries oil that has a viscosity of 0.14 Pa s. The volume flow rate of the oil is 5.3 × 10-5 m3/s. The
Liula [17]

Answer:

Explanation:

Given

\mu =0.14 Pa.s

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radius r=0.58 cm

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P_{in}-P_{out}=\frac{128\mu L\cdot Q}{\pi D^4}

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P_{in}=7.19\times 10^5

3 0
3 years ago
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julsineya [31]

Answer:

where is the image?

Explanation:

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