So we know F=ma
m means mass and a means acceleration
so Force= ma
so F=1300X1.07=1391N
hope you like it
if it helps you please mark the answer as brainliest answer
Answer:
Speed of light changes
Explanation:
Since glass is denser than air so the speed of light in glass is less than in air so light rays bend i.e. refract.
Answer:
1) Some light waves bounce off the inner part of the film.
2) In doing so they travel a bit than the waves bouncing off the outer waves.
so we see colors repeat in pattern in a thin soap film
Explanation:
A colorful interference pattern is observed when light is reflected from the top and bottom boundaries of a thin oil film. The different bands form as the film's thickness diminishes from a central runoff-point.
When white light shines on a bubble, strange things happen. When light waves hit a bubble, some of them bounce straight back off the outer part of the soap film. Others carry on through but then bounce off the inner part of the film. So one set of light rays shine into a soap bubble, but two sets of rays come back out again. When they emerge, the waves that bounce off the inner film have traveled a tiny bit further than the waves that bounced off the outer film. So we have two sets of light waves that are now slightly out of step. Like two sets of ripples on a pond, these waves start merging. Just like on a pond, some add together and some cancel out. The overall effect is that some of the colors in the original white light disappear altogether, leaving other colors behind. These are the colors you see in soap bubbles.
I might be incorrect but I’m pretty confident that all of it is right. I think you’re good.
Answer:
The angle that the piece of cloth will lose contact with the wall would be 
Explanation:
for a body moving in a circular path The net force is equal to the centripetal force and can be calculated thus;
mgsin θ = m
r
isolating sine θ
sin θ = r/ g
where w is the angular velocity = 41.5 rev/min = 41.5 rev/min x 2π/60 secs = 4.34587 rad/s
r is the radius = = d/2 = 0.692/2 = 0.3145 m
g is the acceleration due to gravity = 9.8 m/
sin θ = (
x 0.3145)/ 9.8
sin θ = 0.6061
θ = 
0.6061
θ =
Therefore the angle that the piece of cloth will lose contact with the wall would be
