X component of force Fx=Fcos45=50×cos×45
Y component of force Fy=Fsin45=50×sin×45
A boat is floating in a small pond. the boat then sinks so that it is completely submerged. what happens to the level of the pond?
It increases!
The answer is:
It is virtual and behind the mirror.
Mirrors produce images, either virtual or real.
Virtual images are produced when the image is behind the mirror. Real images are formed when they image is produced in front of the mirror.
So look at the image produced. It's small and found in behind the mirror. This means that it is a virtual image. How do I know that its behind the mirror?
When you look at the diagram, the front side of the mirror is the blue side. This is a convex mirror.
By definition, the refractive index is
n = c/v
where c = 3 x 10⁸ m/s, the speed of light in vacuum
v = the speed of light in the medium (the liquid).
The frequency of the light source is
f = (3 x 10⁸ m/s)/(495 x 10⁻⁹ m) = 6.0606 x 10¹⁴ Hz
Because the wavelength in the liquid is 434 nm = 434 x 10⁻⁹ m,
v = (6.0606 x 10¹⁴ 1/s)*(434 x 10⁻⁹ m) = 2.6303 x 10⁸ m/s
The refractive index is (3 x 10⁸)/(2.6303 x 10⁸) = 1.1406
Answer: a. 1.14
Answer:
0 N
Explanation:
According to Newton's first law of motion, an object in motion stays in motion until acted upon by an unbalanced force. With no friction in space to unbalance the cannonball, it will continue to keep going.
