<span>6160 joules
to lift 1 newton 1 metre requires 1 joule
there are 10 newtons in one kilo
so 77(kg) x 8 (metres) x 10 (newtons/kilo) = 6160 joules</span>
Answer:
The magnitude and algebraic sign of q is 
Explanation:
Given that,
Point charge = -0.70 μC[/tex]
We need to calculate the force for all charges
The electric force at first corner

The electric force at opposite corner

The net force is

Put the value into the formula

The electric force at second corner

The net force acting on either of the charges is zero.
So, 



Hence, The magnitude and algebraic sign of q is 
All of these can provide voltage. a battery is a generator, and plugging in to an electrical outlet is just like your phone charger or TV..
Answer:
7.37 kg
Explanation:
By Newtons Second Law of Unbalanced Forces
Force = Mass × Acceleration
140N = Mass × 19m/s^2
Mass = 140N / 19m/s^2
= 7.37 kg
A because its about an opening in the sea floor and tectonic plates are the only thing.