Explanation :
It is given that the ad says the ride is 50 meters tall and reaches a speed of 28m/sec at the bottom.
The efficiency is defined as the ratio of the output energy and the input energy.
In this case, the output energy is kinetic energy and the input is potential energy.
Output energy,
Input energy,
Efficiency becomes :
or
The ride is 80% efficient.
Answer:
shift the wavelength of spectral lines
Explanation:
The Doppler effect is commonly used in the field of astronomy to study the motion of astronomical objects such as a star, planets, and distant galaxies. This results in the changing of wavelength and shifting of the spectral lines, due to the relative and continuous motion of the receiver and the source. This is known as the red-shifting, where the lights in the spectrum move towards the highest wavelength, i.e towards the red light. This Doppler effect signifies that the distance between the distant galaxies and earth increases with the increasing recessional velocity.
Answer:
1: Check if power is out
2: check on electricity bill if payed on time
3: make sure you're light bulb didn't go out
4: replace light bulb if needed
Explanation: