Answer:
3675 J
Explanation:
Gravitational Potential Energy = × mass × g × height
( g is the gravitation field strength )
Mass = 50 kg
G = 9.8 N/kg ( this is always the same )
Height = 15 m
Gravitational Potential Energy = × 50 ×9.8 × 15
= 3675 J
Answer:
f = 12 cm
Explanation:
<u>Center of Curvature</u>:
The center of that hollow sphere, whose part is the spherical mirror, is known as the ‘Center of Curvature’ of mirror.
<u>The Radius of Curvature</u>:
The radius of that hollow sphere, whose part is the spherical mirror, is known as the ‘Radius of Curvature’ of mirror. It is the distance from pole to the center of curvature.
<u>Focal Length</u>:
The distance between principal focus and pole is called ‘Focal Length’. It is denoted by ‘F’.
The focal length of the spherical (concave) mirror is approximately equal to half of the radius of curvature:
where,
f = focal length = ?
R = Radius of curvature = 24 cm
Therefore,
<u>f = 12 cm</u>
Answer:
The value is
Explanation:
From the question we are told that
The power rating of the stove is
The duration of its use everyday is
The rating of the light bulbs is
The number is
The power rating of the total bulb is
The duration of its use everyday is
The power rating of miscellaneous appliance
The duration of its use everyday is
The power rating of hot water
The duration of its use everyday is
Generally the total electrical energy used in 1 month is mathematically represented as
=>
=>
=>
Generally the monthly electricity bill is mathematically represented as
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