3 years ago

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

Murljashka [212]

The answer is 1.4 newtons

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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

Reread the introduction section of this activity. Write a brief conclusion for this activity

ki77a [65]

Answer:

can you write proper

Explanation:

I don't understand

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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

Bond [772]

A = .3*g = 2.94 m/s²

t = v/a = 9/2.94 = 3.061 sec 

W = E/t = ½mv²/t = ½*40*9²/3.061 = 529.2 watts

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3 years ago

True or False: Amplitude can increase or decrease wavelength

Marat540 [252]

Answer:

A. False, frequency can increase or decrease wavelength.

For example: a high frequency would mean there are shorter wavelengths that occur in a period. Meanwhile, a low frequency would indicate that the wavelengths are longer and in longer periods.

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