City 4 because it is closer to the equator
Average speed = (distance covered) / (time to cover the distance)
= (30km + 40 km) / (25min + 35min)
= (70 km) / (60 min)
= 70 km/hour
Answer: Salt
Explanation: Alkenes, esters, and salts are all functional groups either containing or being functional groups.
Answer:
<h3>
1.2 volt induced in coil.</h3>
Explanation:
Given:
Number of turns 
Cross sectional area

Rate of increasing magnetic field

From the faraday's law,
Induced emf is given by,

Where
magnetic flux
( because angle between normal coil and field is zero)
Where
area of coil
Put the value of
in above equation,
Here we neglect minus sign


V
Therefore, 1.2 volt induced in coil
the potential at the center of curvature of the arc = v = Q ∕ (4πε∘a) or 
ATQ,
We have density of charge,
λ = 
Where L is the rod's length, in this case the semicircle's length L = πr
Q is the charge on the rod
The potential created at the center by an differential element of charge is:

where k is the coulomb's constant
r is the distance from dQ to center of the circle
v = ∫
, Where a = radius, k = 1 / 4πε∘
v =
or Q ∕ (4πε∘a)
To learn more about potential from the given link
brainly.com/question/25923373
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