The answer should be 2times3.14 which equals 6.28
Answer:
The number of excess electrons on each sphere is 759
Explanation:
Given that,
distance , d = 20 cm
= 0.20 m
let the number of electrons is n
Electric force (F) = k × (n × e)² /d²
3.33 × 
= 9 × 
× (n × 1.602 × 
)² /0.2²
solving for n
n = 759
(a) The projectile's velocity at the highest point of its trajectory is 51.96 m/s.
(b) The maximum height reached by the projectile is 45.92 m.
<h3>
Projectile velocity at the highest point of trajectory</h3>
At the highest point of trajectory the vertical component of the velocity will be zero will the horizontal component will remain constant.
Vxi = Vxf = Vcosθ = 60 x cos30 = 51.96 m/s
<h3>Maximum height of the projectile</h3>
The maximum height reached by the projectile is calculated as follows;
H = u²sin²θ/2g
H = (60² x (sin30)²)/(2 x 9.8)
H = 45.92 m
Learn more about projectile here: brainly.com/question/24216590
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Answer:
See explanation for details
Explanation:
The stored electric field energy can be greater than the stored magnetic field energy
-The stored electric field energy can be equal to the stored magnetic field energy
-The stored electric field energy can be less than the stored magnetic field energy
-AS the capacitor is discharging, the current is increasing
