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zhenek [66]
3 years ago
7

A bowling ball (mass = 7.2 kg, radius = 0.11 m) and a billiard ball (mass = 0.38 kg, radius = 0.028 m) may each be treated as un

iform spheres. What is the magnitude of the maximum gravitational force that each can exert on the other?
Physics
1 answer:
Semenov [28]3 years ago
3 0

Answer:

Explanation:

Given that

Mass of bowling ball M1=7.2kg

The radius of bowling ball r1=0.11m

Mass of billiard ball M2=0.38kg

The radius of the Billiard ball r2=0.028m

Gravitational constant

G=6.67×10^-11Nm²/kg²

The magnitude of their distance apart is given as

r=r1+r2

r=0.028+0.11

r=0.138m

Then, gravitational force is given as

F=GM1M2/r²

F=6.67×10^-11×7.2×0.38/0.138²

F=9.58×10^-9N

The force of attraction between the two balls is

F=9.58×10^-9N

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In any given wave, when the frequency of the wave doubles (f = 2f), which of the following other changes would also take place?
Zanzabum

Answer:

The correct answer is -

B. The velocity would double (v = 2v).

C. The wavelength would be half (λ = λ/2).

Explanation:

A wave has a speed or velocity that is related to the wavelength of the wave and the frequency of the wave and this relationship can be represented by the following equation-

Wave velocity V = Wavelength (λ) * Frequency (f)

Frequency (f) = Velocity (V) / Wavelength(λ).

The frequency and wavelength are inversely proportional and frequency and velocity are directly proportional to each other.

So, if f = 2f then,

putting value in the formula,

2f = 2v/λ, which means, f = 2v and f = λ/2

when the frequency is doubled, the wavelength will be halved and velocity will be doubled.

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3 years ago
A bird flies north with a force of 11N, the air resistance is 2N. How do i do a diagram of this?
Novay_Z [31]
This is a diagram from above, the air resistance is oppose to movement, the bird is moving forward given its force is bigger.

7 0
3 years ago
Kenny klutz drops his physics book off his aunt's high-rise balcony.it hits the ground below 1.5 s later?
tatuchka [14]

Gravity causes a falling object to fall 9.8 m/s faster every second it falls.

Kenny's book started out with no speed when it was dropped. 
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During the fall, its average speed was  1/2(0 + 14.7) = 7.35 m/s .

Distance it covered = (average speed) x (time) =

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8 0
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Physical fitness is a combination of _____Factors <br> A two <br> B three<br> C four <br> D five
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The answer is D.) *Five*

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The force attraction between two objects, does what, as the distance between them increases?
gregori [183]

Decreases

Explanation:

The force of attraction between two objects will decrease as the distance between them increases.

This is in compliance with newtons law of universal gravitation.

The force of attraction between the two bodies is a gravitational force.

According to newton's law of universal gravitation "the force of attraction between two bodies is directly proportional to the product of their masses and inversely proportional to the square of the distances between them".

 We see that from the last statement, the force of attraction between  is inversely proportional to the square of the distances between them.

          F ∞ \frac{1}{r^{2} }

r is the distance between them.

learn more:

Universal gravitation brainly.com/question/1724648

#learnwithBrainly

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3 years ago
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