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Nikitich [7]
3 years ago
10

One of planets known to have rings is A. Saturn B. Venus C. Mars D. Mercury

Physics
2 answers:
Anastasy [175]3 years ago
8 0
Saturn is very commonly known for its rings
Troyanec [42]3 years ago
7 0
A. Saturn is the planet known to have rings
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Two metal balls have charges of 7.1 × 10-6 coulombs and 6.9 × 10-6 coulombs. They are 5.7 × 10-1 meters apart. What is the force
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A 2000 kg roller coaster is at the top of a loop with a radius of 24 m. If its speed is 18 m/s at this point, what force does it
levacccp [35]

Answer:

46620\ \text{N}

Explanation:

m = Mass of roller coaster = 2000 kg

r = Radius of loop = 24 m

v = Velocity of roller coaster = 18 m/s

g = Acceleration due to gravity = 9.81\ \text{m/s}^2

Normal force at the point will be

N-mg=\dfrac{mv^2}{r}\\\Rightarrow N=\dfrac{mv^2}{r}+mg\\\Rightarrow N=\dfrac{2000\times 18^2}{24}+2000\times 9.81\\\Rightarrow N=46620\ \text{N}

The force exerted on the track is 46620\ \text{N}.

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3 years ago
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Explanation:

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4 0
3 years ago
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A 18.0-kg rock is sliding on a rough, horizontal surface at 7.10 m/s and eventually stops due to friction. the coefficient of ki
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A = .3*g = 2.94 m/s² 

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<span>W = E/t = ½mv²/t = ½*40*9²/3.061 = 529.2 watts</span>
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True or False: Amplitude can increase or decrease wavelength
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Answer:

A. False, frequency can increase or decrease wavelength.

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