Answer:
588 J
Explanation:
PE (potential energy) = (mass) x (gravity) x (height)
mass = 12 kg
gravity = 9.8m/s^2
height = 5 m
PE = (12) x (9.8) x (5) = 588 J (Joules)
A velocity and wavelength
Explanation:
When a periodic wave travels from one medium to another, its velocity and wavelength changes in the process.
A periodic wave is a wave with repeating pattern.
- When a wave crosses different medium with different densities, their velocity and wavelength changes.
- This implies that wave causes disturbances in different ways.
- This change in wavelength and velocity as a wave crosses two medium is known as refraction.
- When a wave moves from a less dense medium to a denser one, the velocity reduces and the wavelength increases.
learn more:
Refraction brainly.com/question/12370040
#learnwithBrainly
Answer:
1. high frequency and high energy.
2. short wavelengths and high frequencies.
3. less energy and long wavelengths.
4. high frequencies and high energy
5. X-rays
6. infrared waves
7. radio waves.
8. Gamma Rays
9. Microwaves
10. infrared waves
Which of what? Apologies please list the following so I can help.
Answer:
10 N.m
Explanation:
Force * Perpendicular distance.
= 20 N * 0.5 m
= 10 N.m
