Answer:
its sort of like how Pounds are measured in lbs
Explanation:
Pounds are measured in lbs when they dont sound anything similar, same thing applies to gun technology.
Answer;
- Transverse wave
- Longitudinal wave
- Electromagnetic wave
The standard wave format for any wave is transverse wave. When depicting longitudinal wave in standard wave format, the direction of motion must be rotated by 90 degrees. Only one of two waves is shown at a time when placing electromagnetic wave in standard wave format.
Explanation;
Transverse wave is a wave in which the vibration of particles is perpendicular with the direction of the wave motion. Longitudinal wave on the other hand are waves in which the vibration of particles is parallel to the direction of the wave motion.
Electromagnetic waves are wave which do not require a material medium for transmission, they include, radio waves, microwaves, UV light, etc. Most electromagnetic waves are transverse in nature.
Answer:
D. a heat engine that uses heat to do work
Answer:
A curved mirror is a mirror with a curved reflecting surface. The surface may be either convex or concave. Most curved mirrors have surfaces that are shaped like part of a sphere, but other shapes are sometimes used in optical devices.
Explanation:
Answer:
Part 1)

Part 2)

Part 3)

Part 4)

Part 5)

Explanation:
Part a)
Initial angular momentum of the merry go round is given as

here we know that


now we have


Part b)
Angular momentum of the person is given as

so we have


R = 1.99 m
so we have


Part 3)
Angular momentum of the person is always constant with respect to the axis of disc
so it is given as

Part 4)
By angular momentum conservation of the system we will have




Part 5)
Force required to hold the person is centripetal force which act towards the center
so we will have


