Explanation:
Here,
object distance(u)=20cm
image distance(v)=80cm-20cm=60cm
focal length(f)=?
we know ,
(1/f)=(1/v)+(1/u)
1/f = 1/60 + 1/20
1/f = (1+3)/60
60 =4f
f=15cm
This ain’t the place, bud. If you have a QUESTION, then you can post it here.
Answer:As people get older, most become better able to regulate negative feelings and emphasize the positive.
Explanation: With age, your skin thins and becomes less elastic and more fragile, and fatty tissue just below the skin decreases. You might notice that you bruise more easily. Decreased production of natural oils might make your skin drier. Wrinkles, age spots and small growths called skin tags are more common.
Answer:
A feature and a coin dropped from the same height falls at the same speed at the condition at free fall,both coin and feature gain same acceleration of 9.8m/s^2.
Answer:
Part a)
Part b)
Explanation:
Part a)
Moment of inertia of the core of the ball
now the moment of inertia for thin shell
now total inertia of the ball is given as
Part b)
Moment of inertia of uniform ball of mass 3.2 kg
