What is held together by intermolecular forces?
2 answers:
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<h2> F = k×
</h2>
Explanation:
- The attractive or repulsive forces which act between any two charged species is an electric force.
- The electric force depends on the distance between the charged species and the amount of charge which can be calculated by the formula given as follows
F = k×
where, K is coulombs constant, which is equal to - 9 x10^9
- The unit for K is newtons square meters per square coulombs.
- This is known as Coulomb's Law.
Answer:
Explanation:
Given
Child falls a height of
Applying conservation of energy we can write
Loss in Potential energy=Gain in kinetic energy
Thus child reaches a velocity of 4.42 m/s
Answer:
(a). 12 plants
(b). 3171 $
Explanation:
(a)first convert units of 100 billion kWh/year into Watts(W)
also convert the units of 1000 MW into Watts(W)
1 billion = 10^9
1 year = 365*24 = 8760 hrs
so
100 billion kWh/year = 1
= W
1000 MW =
no. of plants = = 11.4
So 12 plants required
(b)
savings = unit price*total units
=
= 3170.9 =3171 $