A pinhole camera has a small circular aperture of diameter D. Light from distant objects passes through the aperture into an oth
erwise dark box, falling on a screen at the other end of the box. The aperture in a pinhole camera has diameter D = 0.600 mm. Two point sources of light of wavelength 560 nm are at a distance L from the hole. The separation between the sources is 2.60 cm, and they are just resolved by the camera. What is L (in m)?
1 answer:
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Answer:
Yes, it's correct
Explanation:
Newton's second Law states that the acceleration of an object is proportional to the net force applied on it, according to the equation:
where
F is the net force on the object
m is the mass of the object
a is the acceleration of the object
We can re-arrange the previous equation in order to solve explicitely for a, the acceleration, and we find:
So, we see that the acceleration is proportional to the net force and inversely proportional to the mass of the object.
Answer:
Explanation:
Given
half life billion year
10 % to decay i.e. 90 % remaining
And
where k= constant
t=time
and
so
t=0.684 billion year
(b)
t=13.8 billion year
atoms