Answer:
Work=29.43
Explanation:
Work=Force*distance
we have the distance of 2 meters. We just need to find the Force.
Force=mass*acceleration
Force=1.5kg*9.81m/s^2
acceleration is Earth's acceleration on an object which is 9.81m/s^2
Force=14.715
lastly, just multiple 14.715N*2m to get your answer of 29.43
20°-(-5°)=25°
Thus the temperature fell by 25°
The movement of your hand is not considered vibration I think. It's just movement. Music is vibtration, your voice is a vibtration Becasue it makes sound. If I answered this question incorrectly let me know