A car, initially traveling at 81.8 mi/h, slows to rest in 7.1 s. What is the car's acceleration?
1 answer:
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Answer:
angular resolution = 0.07270° = 1.269 × rad
greatest distance from the camera = 118.20 m = 0.118 km
Explanation:
given data
diameter = 0.50 mm = 0.5 × m
distance apart = 15 cm = 15× m
wavelength λ = 520 nm = 520 × m
to find out
angular resolution and greatest distance from the camera
solution
first we expression here angular resolution that is
sin θ = .......................1
put here value λ is wavelength and d is diameter
we get
sin θ =
θ = 0.07270° = 1.269 × rad
and
distance from camera is calculate here as
θ = .................2
I =
I = 118.20 m = 0.118 km
Answer:
The correct option is (B).
Explanation:
The Kepler's third law of motion gives the relationship between the orbital time period and the distance from the semi major axis such that,
It is mentioned that, an asteroid with an orbital period of 8 years. So,
So, an asteroid with an orbital period of 8 years lies at an average distance from the Sun equal to 4 astronomical units.