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antiseptic1488 [7]

2 years ago

9

A compact disc has a radius of 6 centimeters.

2 answers:

Vika [28.1K]2 years ago

5 0

Circumference is $2\pi{r}=37.7$ (approx.)
Speed is 4 times that. That is, 150.8 cm/s or 1.508 m/s.
If we get a point at distance 3 cm, we take the radius half of that. The circumference also gets half, so does the linear speed. We get 0.754 m/s or 75.398 cm/s.

alex41 [277]2 years ago

5 0

Answer:75.389

Explanation:

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The vaule of the g constant (the acceleration of all objects due to gravity)on earth is

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The answer is: " $\frac{9.8 m}{s^2}$ " .
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3 years ago

A 5.22×104 kg railroad car moves on frictionless horizontal rails until it hits a horizontal spring stopper with a force constan

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To solve this problem we will apply the principles of conservation of energy, for which we have to preserve the initial kinetic energy as elastic potential energy at the end of the movement. If said equality is maintained then we can affirm that,

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Here,

m = mass

k = Spring constant

x = Displacement

v = Velocity

Rearranging to find the velocity,

$mv^2 = kx^2$

$v^2 = \frac{kx^2}{m}$

$v = \sqrt{\frac{kx^2}{m}}$

Our values are,

$m = 5.22*10^4kg$

$k = 4.58*10^5N/m$

$x = 32cm = 0.32m$

Replacing our values we have,

$v = \sqrt{\frac{(4.58*10^5)(5.22*10^4)}{0.32}}$

$v = 2.733*10^5m/s$

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8 0

3 years ago

For a wave, the _____ the amplitude, the _____ energy the wave carries.

Rudik [331]

Answer:

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HENCE, THE ANSWER IS A. :)

Explanation:

<em><u>#</u></em><em><u>CARRYONLEARNING</u></em>

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2 years ago

Read 2 more answers

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Marta_Voda [28]

Answer:

Draw the vector triangle (head to tail)

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tan theta = 4 / 8 = .5

theta = 26.6 deg

4 0

2 years ago

pochemuha

Answer:

Explanation:

The fish falls from vertical rest in a time of

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2 years ago