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Mazyrski [523]
3 years ago
10

Orange light has a wavelength of 600nm. calculate the frequency if the speed of light in vacuum​

Physics
1 answer:
Kay [80]3 years ago
7 0

the correct answer is ---- 122

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What's the stuff called that holds a car window in place?
erma4kov [3.2K]
Bottom rail is called the "stuff" that holds a car window in place.

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A child and sled with a combined mass of 50.2 kg slide down a frictionless hill that is 8.38 m high. If the sled starts from res
zloy xaker [14]

here we can say that since the hill is friction less So total energy is now conserved

we can use the energy conservation principle now

U_i + KE_i = U_f + KE_f

here we can say that initial KE is zero as the child and sled is at rest

and the final potential energy will also be zero as the child will reach the bottom

So here we can say

mgh + 0 = 0 + \frac{1}{2}mv^2

v = \sqrt{2gh}

v = \sqrt{2*9.8*8.38}

v = 12.8 m/s

so final speed will be 12.8 m/s

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3 years ago
A baseball has a mass of 0.15 kg and radius 3.7 cm. In a baseball game, a pitcher throws the ball with a substantial spin so tha
mylen [45]

Answer:

Rotational kinetic energy = 0.099 J

Translational kinetic energy = 200 J

The moment of inertia of a solid sphere is I = \frac{2}{5}mr^2.

Explanation:

Rotational kinetic energy is given by

\text{RKE} = \frac{1}{2}I\omega^2

where <em>I</em> is the moment of inertia and <em>ω</em> is the angular speed.

For a solid sphere,

I = \frac{2}{5}mr^2

where <em>m</em> is its mass and <em>r</em> is its radius.

From the question,

<em>ω</em> = 49 rad/s

<em>m</em> = 0.15 kg

<em>r</em> = 3.7 cm = 0.037 m

\text{RKE} = \frac{1}{2}\times \frac{2}{5} mr^2\omega^2 = \frac{1}{5} mr^2\omega^2

\text{RKE} = \frac{1}{5} (0.15\ \text{kg})(0.037\ \text{m})^2(49\ \text{rad/s})^2 = 0.099\text{ J}

Translational kinetic energy is given by

\text{TKE} = \frac{1}{2} mv^2

where <em>v</em> is the linear speed.

\text{TKE} = \frac{1}{2} (0.15\ \text{kg})(52\ \text{m/s})^2 = 200\text{ J}

5 0
3 years ago
Read 2 more answers
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The current is

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Which best describes a parallel circuit?
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c more than 1 pwy..................

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