3 years ago

What does Newton's law of universal gravitation say about the distance between objects?

Physics

2 answers:

leonid [27]3 years ago

8 0

objects will have more gravitational interaction when closer and the further away they are they will have less.

VikaD [51]3 years ago

6 0

The closer objects are the more gravitational interaction between the two. The farther away the objects the less gravitational interaction between the two.

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An amplifier produces a sound wave with a power of 1.00 μW (micro-Watt). If it is a point source and radiates uniformly in all d

gtnhenbr [62]

Answer:

(a) $I=8.84*10^{-9}W/m^{2}$

(b) $\beta =39.46dB$

Explanation:

Given data

The source is 1.00 μW

The point is 3m away from the point source

For Part (a)

The intensity at a certain distance from a point source that emits sound wave is given as:

$I=\frac{P_{s} }{4\pi r^{2} }\\I=\frac{1*10^{-6}W }{4\pi (3m)^{2} } \\I=8.84*10^{-9}W/m^{2}$

For Part (b)

The Sound level is given by

β=(10dB)×log(I/I₀)

Where

I₀=1×10⁻¹²W/m²

Substitute the given values to find Sound level

$\beta =(10dB)log(\frac{8.84*10^{-9}W/m^{2} }{1*10^{-12}W/m^{2}} )\\\beta =39.46dB$

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3 years ago

Can you name some people who have shown perseverance?

Komok [63]

Answer:

Milton Hershey

Steve Jobs

Simon Cowell

Thomas Edison

Explanation:

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4 years ago

Winnie the Pooh pushes a jug of with a force of 60 Newtons 3.5 meters. How much work did he do?

KonstantinChe [14]

Answer:

For him being such a fat bear, it would have taken alot of work

Explanation:

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3 years ago

AP PHYSICS please answer

mamaluj [8]

I think it’s d not sure

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3 years ago

A ball of mass 2.0 kg falls vertically and hits the ground with speed 7.0 ms-1 as shown below.

Sauron [17]

Answer:

8.0 Ns

Explanation:

Change in momentum is given as:

Final momentum - Initial momentum

= m*v - m*u

Where m = mass of ball

v = final velocity

u = initial velocity

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= 6.0 - 14.0 = -8.0 Ns

The magnitude will be |-8.0| = 8.0 Ns

7 0

4 years ago

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