Sometimes scientists make a mistake or Miscalculate and need to do the experiment again.
Answer:
E= 71dB
Explanation:
See attached file for step by step calculation
Answer:
adding to or more vectors together . When displacement vectors are added, the result is a resultant displacement. But any two vectors can be added as long as they are the same vector quantity.
Explanation:
Answer: a switch can do A, B and E
Explanation: