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.
Answer:
A) Force = 0.69 N
B) Acceleration = 0.34 m/s^2
Explanation:
The electric force is given by the expression:
K is the Coulomb constant equal to 9*10^9 N*m^2/C^2, q1 and 12 is the charge of the particles, and r is the distance:
Part B.
For the acceleration, you need Newton's second Law:
F = m*a
Then,
Answer:
Just be your true authentic self. The more you try to be like someone else, or be a follower, or conform yourself to fit in, the less true to yourself you will be. Believe it or not, being different is attractive. Yet at the same time, nothing is really normal. We all have differences that make us unique; therefore no one is 100% normal. To "win friends" you just need to be you. It'll come naturally - even if you're an introvert. You don't necessarily need to try. You will find you're people someday. And that's a fact.
As for how to influence people, you really just need to make sure you're acting in a way that is inspiring. Think about things from a different perspective. Try to do your best and be your best self 24/7. You can change people's opinions just by being nice. You can remove people's grudges by lending a helping hand. You don't need to stop global warming, or discover a drug that can cure cancer to make a difference. The small things that you do, like holding a door for a stranger, or buying groceries for an elder in your neighborhood have an immeasurable impact. Try do more of these small things, and before long you'll notice your influence in your community and maybe even the world.
Above all, be you.
Answer: A, to inform people of when, how, and why to wash their hands.
Explanation: in the poster it shows when you should wash your hands, how you should wash your hands, and why its important to wash your hands! Please give brainliest!
Answer:
The net force exerted by the two charges is 10.97 x 10⁻⁵ N along negative x-direction.
Explanation:
K=1/4πϵ0, where ϵ0=8.854×10−12C2
K = 9x10⁹
The electric force on point charge q₃ due to charge q₂ is
F₃₂ = kq₃q₂ / (1.245)²
= (9x10⁹ * 49.5x10⁻⁹ * 30.5x10⁻⁹) / (1.245)²
= 13,587.75 x 10⁻⁹ / 1.55
= 8.76629 x 10⁻⁵ N
The electric force on point charge q₃ due to charge q₁ is
F₃₁ = kq₃q₁ / (1.695 - 1.245)²
= (9x10⁹ * 49.5x10⁻⁹ * 10.0x10⁻⁹) / 0.2025
= 2.2000 x 10⁻⁵ N
The net electric force on point charge q₃ is
F₃ = -F₃₁ - F₃₂
= - 8.76629 x 10⁻⁵ N - 2.2000 x 10⁻⁵ N
= 10.97 x 10⁻⁵ N along negative x-direction