Answer:
Mass
Explanation:
B. 21.81
C. 45.83
D. 21.82
Answer:
here is the answer
Explanation:
an odometer or a milometer
Answer:
Refraction
Explanation:
Refraction is a phenomenon which results when a ray of light enters from one medium to another medium. The speed of light in a medium slows down. It depends upon the optical density of the medium which is given by refractive index.
When a ray of light enters from rarer medium to denser medium, it bends towards the normal.
When a ray of light enters from denser medium to rarer medium, it bends away from the normal.
The laws of refraction are:
This is Snell's law. i is the angle of incidence, r is the angle of refraction, n₁ is the refractive index of medium 1 and n₂ is the refractive index of the medium 2.
Answer:F/4
Explanation:
F1=G M1M2/R^2
F2=G M1M2/4R^2 (1/2*1/2)
F1/F2=G M1M2/R^2 *G M1M2/4R^2
NOW everything gets canceled and we are left with-
F1/F2=4
F1/4=F2
so Option a is right.
Answer:
50% of unpolarised light passes through the first filter because, on average, 50% of the waves are aligned with the fiter's axis. Intensity is reduced by a factor 0.5.
The second filter then reduces the intensity by a factor cos²(θ)
Explanation:
b. shale
c. magma
d. silt
The correct answer is a:Seawater
Answer:
the answer b
Explanation: