Answer:
267.07 km
Explanation:
We have given the radius of the earth = 6378.1 km
In 2014 the difference between the magnetic north pole and geographical north pole is 2.40°
2.40°
We know that linear distance is given by 
So we have to travel 267.07 km in going from magnetic north pole to geographic north pole
Answer:
36.9 m/s
Explanation:
From;
v^2 = u^2 + 2as
Where;
v = final velocity =?
a = acceleration = 3.4 m/s^2
u = initial velocity = 0 m/s
s = distance covered = 200 meters
v^2 = 0^2 + 2 * 3.4 * 200
v^2 = 1360
v = √1360
v = 36.9 m/s
Jeremy’s son has more mass, so it would take more forever to reach the same height as his daughter
Given that ;
Energy (work ) Produced by bulb =20 KJ = 20000 J
Input power = 15 KW
Output power given by the bulb = Rate of doing work
= Work ÷ time
= 20000 ÷ 1800 <em>(since 1 min = 60 seconds)</em>
= 11.11 W
Noe, efficiency is the ratio of output power to input power
η = output power ÷ input power
= 11.11 ÷ 15
= 0.74
= 74%
<em>Efficiency of light bulb is 74%</em>
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