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Rama09 [41]
3 years ago
9

A sphere has______ sides​

Physics
2 answers:
Alina [70]3 years ago
8 0

Answer:

5738929292

Explanation:

simple math

o-na [289]3 years ago
8 0
A sphere has no sides
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1. Consider three objects: Object A is a hoop of mass m and radius r; Object B is a sphere
Zarrin [17]

a) Object C (the disk) has the greatest rotational inertia (\frac{3}{2}mr^2)

b) Object B (the sphere) has the smallest rotational inertia (\frac{4}{5}mr^2)

Explanation:

The moments of inertia of the three objects are the following:

1) For a hoop of negligible thickness, it is

I=MR^2

where M is its mass and R its radius. For the hoop in this problem,

M = m

R = r

Therefore, its moment of inertia is

I=(m)(r)^2=mr^2

2) For a solid sphere, the moment of inertia is

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

where M is its mass and R its radius. For the sphere in this problem,

M = 2m

R = r

Therefore, its moment of inertia is

I=\frac{2}{5}(2m)(r)^2=\frac{4}{5}mr^2

3) For a disk of negligible thickness, the moment of inertia is

I=\frac{1}{2}MR^2

where M is its mass and R its radius. For the disk in this problem,

M = 3m

R = r

Therefore, its moment of inertia is

I=\frac{1}{2}(3m)(r)^2=\frac{3}{2}mr^2

So now we can answer the two questions:

a) Object C (the disk) has the greatest rotational inertia (\frac{3}{2}mr^2)

b) Object B (the sphere) has the smallest rotational inertia (\frac{4}{5}mr^2)

Learn more about inertia:

brainly.com/question/2286502

brainly.com/question/691705

#LearnwithBrainly

7 0
3 years ago
A flashlight bulb is connected to a square loop of wire that measures cm on a side as shown in the figure below. assume the bulb
LUCKY_DIMON [66]
Mmmmmmmm Ф↓⇄㏑㏒,,⇆↑aaaaaaa
4 0
3 years ago
Please Help!!!!
Len [333]

Answer:

v = 0.92 c

Explanation:

Here, we will use the time dilation formula from Einstein's theory of relativity to find the speed of traveling of the friend:

t =\frac{t_o}{\sqrt{1-\frac{v^2}{c^2}}} \\\\\\\sqrt{1-\frac{v^2}{c^2}}=\frac{t_o}{t}\\\\

where,

v = speed of traveling = ?

c = speed of light

t = time of return = 10 years

t₀ = time passed on earth = 4 years

Therefore,

\sqrt{1-\frac{v^2}{c^2}} = \frac{4\ years}{10\ years}\\\\  1-\frac{v^2}{c^2}=(\frac{2}{5})^2\\\\\frac{v^2}{c^2} = 1-\frac{4}{25}\\\\\frac{v^2}{c^2} = \frac{21}{25}\\\\v^2 = 0.84c^2\\\\

<u>v = 0.92 c</u>

8 0
2 years ago
Which situation is the best example of translational motion?.
AleksAgata [21]

Answer:

 a block sliding down a ramp,a leaf blowing across a field

8 0
2 years ago
What is the correct definition of nurture?
makkiz [27]

Answer:

(C) the fulfillment of physical, mental, emotional, and social needs

Explanation:

Nurture

Definition (A) - <u><em>Care for and encourage the growth or development of</em></u>

Definition (B) - <u><em>The process of caring for and encouraging the growth or development of someone or something</em></u>

The best definition in the answer list for the word "nurture" is answer (C) The fulfillment of physical, mental, emotional, and social needs

8 0
3 years ago
Read 2 more answers
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