Asphere of radius r = 5cm carries a uniform volume charge density rho = 400 nc/m^3. q. what is the total charge q of the sphere?

The total charge Q of the sphere is .

Explanation:

Given that,

Radius = 5 cm

Charge density

We need to calculate the total charge Q of the sphere

Using formula of charge

Where, = charge density

V = volume

Put the value into the formula

Put the value into the formula

Hence, The total charge Q of the sphere is .

c) up is the direction the magnetic force is acting on the charge.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards