Question

Calculate the work done when a student weighing 400N carries a weight of 200N from ground to a height of 15m.(Take g=10m/s²) (possible answer will be 9000J)​

Answer 1

Answer:

students stand 2 metre apart in front of a plane mirror that is 3 m long . student Y is standing at the midpoint of the mirror. How many students can see the images of the other two? See attachment for more info(d) To neutralize the acidity in the wastewater​

Explanation: