Answer:
The value is
Explanation:
From the question we are told that
The rate at which the plate rotates is
Generally the revolution per second is mathematically represented as
=>
Watt, which is a unit of power, is equal to ____ a) a joule divided by a second b) a joule times a meter c) a joule times a seco
2 answers:
<u>Answer:</u> Watt, a unit of power is equal to a joule divided by a second
<u>Explanation:</u>
Power is defined as the ratio of rate of work done by an object. It is measured in Watt.
Mathematically,
where,
W = work done by the object. It is measured in Joules
t = time taken by the object. It is measured in seconds
So, the unit of watt is equal to a joule divided by a second.
Hence, Watt, a unit of power is equal to a joule divided by a second
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Answer:
Explanation:
a )
from lens makers formula
f is focal length , r₁ is radius of curvature of one face and r₂ is radius of curvature of second face
putting the values
1.462 = 2 - 1 / r₂
1 / r₂ = .538
r₂ = 1.86 cm .
= 18.6 mm .
b )
object distance u = 25 cm
focal length of convex lens f = 1.8 cm
image distance v = ?
lens formula
.5555 - .04
= .515
v = 1.94 cm
c )
magnification = v / u
= 1.94 / 25
= .0776
size of image = .0776 x size of object
= .0776 x 10 mm
= .776 mm
It will be a real image and it will be inverted.