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24t
Answer:
6.58×10⁻¹⁸ J
Explanation:
Applying
E = kq²/r.................. Equation 1
Where E = potential energy, q = charge on each electron, r = distance between the electron, k = coulomb's constant.
From the question,
Given: r = 3.5×10⁻¹¹ m,
Constant: q = 1.6×10⁻¹⁹ C, k = 8.99×10⁹ Nm²/C²
Substitute these values into equation 1
E = (1.6×10⁻¹⁹)²(8.99×10⁹)/(3.5×10⁻¹¹)
E = 6.58×10⁻¹⁸ J
Answer:
The force is 
Explanation:
From the question we are told that
The mass of the bungee jumper is m = 80 kg
The spring constant is 
The extension of the rubber bungee cords is x = 50 m
Generally the weight of the jumper is

=> 
=> tex]W = 784 \ N [/tex]
Generally the returning force of the rubber bungee cords is mathematically represented as

=> 
=> 
The force to be applied by the bear is

=> 
=> 
add the river's velocity to the boat's velocity
5+ 5 = 10 km/h
Hope this helps!