Physics: An electron and a proton are each placed at rest in a uniform electric field of magnitude 560 n/c. calculate the speed of each particle 46.0 ns after being released. electron 4.5e^-6 incorrect.

An electron and a proton are each placed at rest

Ответ:

lailabirdiemae

16.01.2022

Physics

The speed of electron is $v=4.52\times 10^6\ m/s$ and the speed of proton is 2468.02 m/s.

Explanation:

Given that,

Electric field, E = 560 N/C

To find,

The speed of each particle (electrons and proton) 46.0 ns after being released.

Solution,

For electron,

The electric force is given by :

F=qE

$F=1.6\times 10^{-19}\times 560=8.96\times 10^{-17}\ N$

Let v is the speed of electron. It can be calculated using first equation of motion as :

v=u+at

u = 0 (at rest)

$v=\dfrac{F}{m}t$

$v=\dfrac{8.96\times 10^{-17}}{9.1\times 10^{-31}}\times 46\times 10^{-9}$

$v=4.52\times 10^6\ m/s$

For proton,

The electric force is given by :

F=qE

$F=1.6\times 10^{-19}\times 560=8.96\times 10^{-17}\ N$

Let v is the speed of electron. It can be calculated using first equation of motion as :

v=u+at

u = 0 (at rest)

$v=\dfrac{F}{m}t$

$v=\dfrac{8.96\times 10^{-17}}{1.67\times 10^{-27}}\times 46\times 10^{-9}$

$v=2468.02\ m/s$

So, the speed of electron is $v=4.52\times 10^6\ m/s$ and the speed of proton is 2468.02 m/s. Therefore, this is the required solution.

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Ответ:

raiderries

25.08.2022

Physics

greater than

Explanation:

The force of friction acts when there is relative motion between two surfaces. It is a resistive force which opposes the motion. coefficient of friction depends on the roughness of the contact surface and contact area. More roughness and greater contact area means greater force of friction.

When the object is at the verge of motion with respect to a surface, static friction acts. When it is in motion, kinetic friction acts. Kinetic friction is less than static friction.

During sliding of object the contact area is greater than the case of rolling. Sliding friction occurs when object slides over a surface. The object is in contact with the surface. In case of rolling, there is only single point of contact with the surface. Thus, sliding friction is greater than rolling friction.

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An electron and a proton are each placed at rest in a uniform electric field of magnitude 560 n/c. calculate the speed of each particle 46.0 ns after being released. electron 4.5e^-6 incorrect.

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