3 years ago

Someone please help me on this question ..please

Physics

1 answer:

ELEN [110]3 years ago

5 0

Answer:

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Explanation:

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Aleksandr [31]

Ur answer is 3 and i'm sure of it

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Alecsey [184]

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Before the invention of a wheel turning on an axle, ancient people moved heavy loads by placing rollers under them. (Modern peop

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Answer: $K.E.=36.277+1.0429=37.319 J$

Explanation:

Velocity of Top most point of wheel is twice the Velocity of centre of mass of wheel

$i.e V_{wheel}=2V_{cm}=0.319 m/s$

Thus angular velocity is given by

$\omega =\frac{V_{cm}}{R}$

$\omega =0.465 rad/s$

$Kinetic\ Energy=Rotational + transtational$

$K.E.=\frac{1}{2}m_{stone}V^2+2\left [ \frac{1}{2}m_{cyl}\left [ \frac{V}{2}\right ]^2\right ]+2\left [ \frac{1}{2}I\omega ^2\right ]$

$K.E.=\frac{V^2}{2}\left [ m_{stone}+\frac{m_{roller}}{2}\right ]+I\omega ^2$

$K.E.=\frac{0.319^2}{2}\left [ 672+\frac{82}{2}\right ]+\frac{82\times 0.343^2\times 0.465^2}{2}$

$K.E.=36.277+1.0429=37.319 J$

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4 years ago

True or false? Most forces occur in pairs, such as when

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This is TRUE everything has a action the force from your feet pushes and the floor pushes back

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According to Coulomb's law, the force of attraction or repulsion between two charges is

Maru [420]

Answer:

B is the answer

Explanation:

thank you I hope it helps you

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