Answer:
Option D- 1,2 and 3
Explanation:
Gravity always acts on an object irrespective of height
BaCI2 stands for Barium Chloride.
Element. element cannot be simplerfide
It depends on how much time 45 j will go, so if you told me that it went through 45 j per minute it will go through for 2 minutes so not efficient unless it went through 45 j per hour then it is efficient.
