<span>KE = 1/2 * m * v^2 = 1/2 * 30 * 20^2 = 1/2 * 30 * 400 = 6000 J</span>
Answer:
Wavelength of the x rays is
Explanation:
It is given that,
The inter planer spacing between the crystal planes,
The first-order maximum in the Bragg reflection occurs when the incident and reflected x rays make an angle of 39.4 degrees with the crystal planes. According to the Bragg's condition, the first-order maximum is given by :
n = 1
So, the wavelength of the x rays is . Hence, this is the required solution.
Hello. The answer, though I don't know what options you need to be answered, is that there is less friction between the car tires and the ice, than when they are on the road. Causing the car to slide.
Short Answer- Friction
Explanation- There is friction between the grass and the ball. Friction is a type of force that limits motion between two surfaces that are touching. Friction is the force that one surface exerts on another with the two surfaces rubbing together.
This is the answer, hope it helps :)