Answer:The charges on the inner and outer surfaces of the shell are +q and -q, respectively
Explanation:
In static equilibrium within a conductor, the total electric field, denoted as E, equals zero
This indicates that no charge can be in motion, maintaining the static state of equilibrium within the conductor.
Since the Electric field, E remains zero, the flux through the shell’s surface is also zero.
According to Gauss' law, the total enclosed charge must be zero.
Given that the center of the shell has a charge of -q, the positive charge on the inner surface must be +q in order for the total charge enclosed to balance out to zero.
As the charge resides in static equilibrium, there will be a corresponding negative charge on the outer surface, which totals to -q.
This leads us to the conclusion that the charges on the inner and outer surfaces of the shell are +q and -q, respectively
The power of the popcorn-maker is calculated as 250 watts. Given that energy is 250J and the time duration is 1 second, the power equates to energy divided by time: Power = 250 ÷ 1, resulting in 250 watts.
The principle of momentum conservation<span> is a key law in the field of physics. It asserts that the </span>momentum<span> within a system remains unchanged unless there are </span>external forces influencing the system. In the case of two balls, each weighing 0.5 kg, colliding on a pool table<span>, this principle does not hold because external forces acted upon the balls during the collision. </span>
H = 40 m is the height from which the ball is released.
m = 1 kg is the ball's mass
Assuming g = 9.8 m/s² and disregarding air resistance.
The vertical velocity at the start is zero.
Let t be the flight duration, then
40 m = (1/2)*g*(t s)² = 0.5*9.8*t²
t² = 40/4.9 = 8.1633
t = 2.857 s
Result: 2.9 s (rounded to the nearest tenth)
