Answer:
1.97 × 10⁻¹⁸J
Explanation:
Charge of an electron q = -1.9 × 10⁻¹⁹C
Length of one side of the equilateral triangle at whose corners electrons are placed d = 3.5 × 10⁻¹⁰m
Coulomb constant k = 8.99 × 10⁹Nm²/C²
electrostatic potential = (3 kq²) / d
= (3 × 8.99 × 10⁹ × (-1.6 × 10⁻¹⁹)²) / 3.5 × 10⁻¹⁰
= 1.97 × 10¹⁸J
Velocity basically means how fast you are going. Acceleration means how much your speed is increasing.
We are told that 4.0
complete waves pass a fixed point in 10 seconds. Using these data, we can find the frequency of the wave, which is given by the number of complete cycles per second:
Now we can find the period of the wave, which is the reciprocal of the frequency:
So, the correct answer is (3) 2.5 s.
Answer:
it is electron that is free to move in conductor
Acceleration is zero because it is travelling at a constant speed.