Explanation:
It is given that,
Momentum of the photon, 
(a) We need to find the wavelength of this photon. It can be calculated using the concept of De-broglie wavelength.

h is the Planck's constant


or

(b) The wavelength lies in the group of ultraviolet rays. The wavelength of UV rays lies in between 400 nm to 10 nm.
The friction is 2.5N. The Net force is 10 N - 2.5 N .= 7.5 N.
acceleration = 7.5 / 5 = 1.5 m/s^2
GREAT QUESTION! Cool subject to talk about :) Here goes nothing lol
1) Apache- North American Indians of the Southwest who fought against frontiersmen.
2) Arapaho- North American Plains Indians living along the Platte and Arkansas Rivers.
3) Sam Bass- A desperado whose career inspired ballads.
4) Judge Roy Bean- a legendary frontier judge who ruled by one book and a six-shooter!
5) Colt .45 six-shot revolver invented by Samuel Colt and used throughout the West... extremely popular among cowboys and outlaws alike.
6) Last but definetily not last, "Billy the Kid" (William H. Bonney, 1859-1881) Brooklyn-born gunman of the Wild West. Legendary Outlaw.
There are plenty more facts to talk about but in the interest of time this all I can provide for now. Hope it helps and have a nice day/night :)
Answer:
d
Explanation:
A dreams
.......wkkwkwkwkwkwnwnsksk