Question

slove this numerical
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no irrevent answer​

Answer 1

Answer:

4×10¹¹m/s² and 0.2m

Explanation:

acceleration= v-u/t = (4×10⁵ - 10³)/10‐⁶

= 10³(400-1)/10‐⁶ = 10⁹ × 399 m/s² = 3.99 × 10¹¹ m/s² approx. 4×10¹¹ m/s²

Lenght of the electron gun = v²- u²/2a( where a is the acceleration)

= ((4×10⁵)² - (10³)² )/ 4×10¹¹×2

= (16× 10¹⁰ - 10⁶)/8×10¹¹

= 10⁶(160000-1)/8×10¹¹

~ 10⁶ × 16×10⁴ / 8×10¹¹

= 2/10 m = 0.2 m

Hope it helps :)