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Arlecino [84]
3 years ago
14

A solid sphere a solid cylinder, and a hoop each have the same mass and radius. If they are spinning at the same angular velocit

y, which one has the greatest rotational kinetic energy
Physics
1 answer:
seraphim [82]3 years ago
8 0

Answer:

KE = 1/2 I * w^2       where I = moment of inertia and w the angular velocity

The hoop has all of it mass at a distance of R from the axis of rotation,

I = M R^2 for the hoop,  the others have values of I that are less that of the hoop.

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5. How are electromagnetic waves similar to ocean waves?.
Masteriza [31]

Answer:

Electromagnetic waves have crests and troughs similar to those of ocean waves. The distance between crests is the wavelength. The shortest wavelengths are just fractions of the size of an atom, while the longest wavelengths scientists currently study can be larger than the diameter of our planet!

Explanation:

hope it's helps u ...........!

3 0
2 years ago
Does anyone know the answer to all of these questions
Rasek [7]

Answer:

i don't understand the hw

5 0
3 years ago
The image represents a sound wave as it goes through several changes. Describe how the waves changes. where does it get louder?
Ksju [112]

Answer:

At point A. it gets kinda loud then at point B. it gets very loud than at point C. it gets quieter than at point D. it gets more silent.

Explanation:

Because you can tell when the waves get large it gets louder and then when the waves get more far apart then it get more quiet. Hope this helped!

4 0
3 years ago
Mrs. Smith can walk 1.4 m/s. If it takes her 8.5 seconds to get to the teacher lounge, how far is the teacher lounge from her ro
AlexFokin [52]

Answer:

6 meters away

Explanation:

6*1.4= 8.4 which is pretty close

5 0
3 years ago
What's the Coulomb's law?
Ulleksa [173]

<span>
In layman's term: </span>like charges don't attract while opposite charges do<span>electrostatic forces between point A( which is charged) and point B (which is also charged) are proportional to the charge of point A and point B. </span><span>there is also something else about this  law that I don't quite remember.</span>

<span>___________________________________________________</span>

<span />Here is the formula:

<span>F = k x Q1 x Q2/d^<span>2</span></span>

<span>What the formula means:</span>

F=force between charges

Q1 and Q2= amount of charge

d=distance between these two charges

k= Coulombs constant (proportionally constant)

________________________________________________

I think that about covers it and hopefully this helped.

4 0
3 years ago
Read 2 more answers
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