Explanation:
Distance d=1.5×108 km=1.5×1011 m
Mass of the sun, m=2×1030 kg
Mass of the earth, M=6×1024 kg
Force of gravitation, F=G×d2m×M
F=6.7×10−11×(1.5×1011)22×1030×6×1024=3.57×1022 N
Answer:
Explanation:
a ) The angle between the polarization axis of two adjecent sheet
= 90 / 3 = 30 degree.
The formula for intensity of polarised light from unpolarised light ( first transmission
I₁ = I₀ /2
I₀ is intensity of unpolarised light and I₁ is intensity of light after first time polarization .
The relation of I₁ and I₂ is as follows
I₂ = I₁ cos²30
= I₀/2 x3/4
=3 I₀/8
Relation between I₃ and I₂ is as follows
I₃ = I₂ cos²30
= 3I₀ / 8 x 3/4
= 9 I₀ / 32
= 0 .28 I₀
In case of stack of 4 plates
angle between two plates = 90/4 = 22.5 degree
I₁ = I₀ /2
I₂ = I₁ cos²22.5
= I₀ /2 x .85
I₃ = I₂ cos²22.5
= I₀ /2 x .85 x .85
= .36 I₀
Answer:
The vapour pressure of water is great tah 50 than it is 10.
Answer:
669042 N upward
Explanation:
= Work done by gravity on pile driver
= Work done by beam
u = Initial velocity
v = Final velocity
m = Mass of pile driver = 2200 kg
g = Acceleration due to gravity = 9.81 m/s²
h = Height the pile driver falls = 4.2 m
d = Bend in beam = 14 cm
Total work done = Change in Kinetic energy
The force the beam exerts on the pile driver while the pile driver is brought to rest is 669042 N upward
