Answer:
On average a galaxy has, between <u>800 billion and 3.2 trillion planets.</u>
The displacement of end a is 1.09mm
given:
Rod diameter,d=20mm
stiffness constant,k=55mn/m
force,f=60kn
young modulus,E= 200gpa
we know the formula
By substituting values in the above formula
length L=A×E/K
=1.14m
Hence, displacement is
=1.09mm
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We see something as white, black, or another specific color because the object is reflecting light waves back.
In a nutshell; If we view an object as red, then the object is:
-> reflecting back red light waves
-> absorbing blue, green, etc light waves.
What about white and black?
We see white when most all of the light is reflected.
When there is little to no light reflected, we see black.
Answer:
ang mga nota opo naipalakpak ko ng maayos
<span>In this case, the angle of incidence equals the angle of reflection at the point that the light ray strikes the surface. Light is also reflected when it is incident on a surface or interface between two different materials such as the surface between air and water, or glass and water.</span>