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sashaice [31]
4 years ago
13

Have an electrical charge of +1, while

Physics
1 answer:
Scrat [10]4 years ago
4 0

Answer:

B

Explanation:

Protons have a positive electrical charge of +1,

Electrons have a negative charge of -1,

Neutrons have a neutral charge of about 0.

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4 years ago
A solid uniform sphere and a thin-walled, hollow sphere have the same mass M and radius R. If they roll without slipping up a ra
elixir [45]

Answer:Hollow sphere

Explanation:

Given

same mass for solid and hollow sphere

same v_{cm} before they start up incline

Moment of inertia of solid Sphere

I_1=\frac{2}{5}Mr^2

Moment of inertia of hollow sphere

I_2=\frac{2}{3}Mr^2

Conserving Energy at bottom and top point for solid sphere

kinetic energy +Rotational Energy=Potential energy

\frac{1}{2}Mv_{cm}^2+\frac{1}{2}I\omega ^2=mgh_1

for pure rolling v_{cm}=\omega r

\frac{1}{2}Mv_{cm}^2+\frac{1}{2}\times \frac{2}{5}Mr^2=Mgh_1

\frac{7}{10}Mv_{cm}^2=Mgh_1

h_1=\frac{7v_{cm}^2}{10g}

For hollow sphere

\frac{1}{2}Mv_{cm}^2+\frac{1}{2}\times \frac{2}{3}Mr^2=Mgh_2

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