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brilliants [131]
2 years ago
7

A wheel rotates at 24 revolutions every 3 minutes. This is equivalent to

Physics
1 answer:
mrs_skeptik [129]2 years ago
8 0
8 revolutions every minute
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This suggest the the atom has a very small positively charged nucleus in the mass of the atom is concentrated. 
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3 years ago
An object of mass m is oscillating with a period T. The position x of the object as a function of time is given by the equation
Scrat [10]

What the equation given?

  • x(t)=Acos\omegat

Maximum velocity occurs at the equilibrium position

So

  • x=0

Now

  • x(0)=Acos0[/tex]
  • x(0)=A

Now

As we know the formula

\\ \rm\rightarrowtail V_max=A\omega

These expressions can be used

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Interactive sites where users write about personal topics an comment to threaded discussion is called
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3 years ago
Two crates, 3kg and 5 kg respectively, are connected with a thin rope.they are pulled up a rough plane which is inclined at 30de
Makovka662 [10]

Answer:

F = 85.24 N

T = 30.84 N

Explanation:

The parameters given are

Mass of crates = m₁ = 3 kg and m₂ = 5 kg

Component of masses acting along the plane = mgsin(θ)

Which gives;

F - (3×9.81×sin(30) + 10 + 5×9.81×sin(30) + 17) = m×a

So that we have;

2 = (F - 66.24)(3 + 5)

F = 16 + 66.24 = 85.24 N

The tension T between the crates = F × m₁/(m₁+m₂) = 85.24 × 3/(3+5) = 30.84 N

6 0
3 years ago
An aluminum rod and a nickel rod are both 5.00 m long at 20.0 degree Celsius. The temperature of each is raised to 70.0 degrees
vitfil [10]

Answer:

0.002925 m

Explanation:

Lt = LO(1 +α Δt ) here Lt is total length Lo is original length α is coefficient of linear expansion and Δt is change in temperature

<h2>for aluminium</h2>

α=25×10^-6

Lt = 5(1+25×10^-6×(70-20))

Lt = 5 (1+25×10^-6×50)

Lt = 5 ( 1+0.00125)

Lt = 5×1.00125

Lt =5.00625 m

<h2>for nickel </h2>

α=13.3×10^-6

Lt =5(1+13.3×10^-6×50)

Lt = 5(1+0.000665)

Lt =5.003325 m

hence difference in length =5.00625-5.003325

                                           = 0.002925 m

3 0
3 years ago
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