The equation to calculate the kinetic energy an object has is:
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Remember that M stands for the mass of the object which is the amount of weight a object has. V stands for volume which is the amount of space a object has.
Hope this helps!
I cannot see all the questions, what is 18,19 and 21? (:
The filament used in light bulb is Tungsten(W).. It's a metal with melting point of about 3300 °C.
Answer:
A)Explanation:
Let object distance be u.
Image distance v = 1.06 - u
Focal length = 20 cm = .2 m
Applying lens formula
1 / v - 1 / u = 1 / f
1 /( 1.06-u) - 1 / u = 1 / .2
5 u² -3.3u - 1.06 =0
It will have two roots
u₁ = .1636 m, u₂ = .8964 m
B ) Magnification
= u = .1636m , v = .8964m
m = .8964 / .1636 = 5.48
C ) When u = .8964m ,v = .1634m
m = .1634 / .8964
=.182