Answer:
Explanation:
The self-inductance of a solenoid is defined as:
Here 
is the the permeability of free space, N is the number of turns in the solenoid, A is the cross-sectional area os the solenoid and l its length. We replace the given values to get the self-inductance:
Answer:
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Explanation:
As the projectile moves upward, its vertical component of velocity decreases due to gravity. While the horizontal component remains the same as there is no acceleration in the horizontal direction. At maximum height vertical component of velocity is zero.
Answer:
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Answer:
Explanation:
electric field between plates
= surface charge density / ε₀
= 108 x 10⁻¹² / 8.85 x 10⁻¹² (ε₀ = 8.85 x 10⁻¹² )
= 12.20 V/ m
Electric potential diff
= electric field x distance between plates
= 12.20 x 17 x 10⁻³ V
= 0.207 Volt
Answer:
Correct answer: v = 34.98 m/s
Explanation:
The kinetic energy formula is Ek = m v²/2 => v = √2Ek/m
v = √2 · 88.7 / 0.145 = 34.98 m/s
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