The law you need is :
lets call the constant c = 4pi*epsilon naught*r2.
where r is radius ( or seperation of the charges). epsilon naught is a constant of about 8.85*10^-12 or something like that. and 4 pi is just 4 times pi.
the actual equation is
FORCE= (q1*q2)/c
Answer:
The value is
Explanation:
From the question we are that
The velocity
The time taken is
The total mass of the train is
Generally the average power delivered is mathematically represented as
=>
=>
Answer:
The work function is
Explanation:
From the question we are told that
The light energy is
The stopping voltage is
Generally work function is mathematically represented as
Where KE is the kinetic energy of the ejected electron and it is mathematically represented as
Where e is the charge on the electron
So
Thus
=>
I really wish I could be helping you. I don't know.
What is the vertical component of its velocity at launch? v0y = 20*sin(53) = 16 m/s
Its horizontal component of velocity? v0x = 20*cos(53) = 12 m/s Neglect icing air friction, which of these components remains constant throughout the flight path? The horizontal component. (the vertical component is affected by gravity)
Which of these components determines the projectile's time in the air? The vertical component. (because the projectile falls down after t = 2*v0*sin(53)/g, you can see it doesn't depend on the horizontal component)