Question

Whatwill be the speed of electron having an energy of 18.2 x10^17​

Answer 1

Answer:

2 x 10²⁴

Explanation:

1/2mv² = energy

v²=energy x 2 ÷ m

v² = 18.2 x 10 ¹⁷ x 2 ÷ 9.1 x 10⁻³¹

v² = 4 x 10⁴⁸

v = √4 x 10⁴⁸

v = 2 x 10 ²⁴