Answer:
35.7 kg
Explanation:
We are given that
Left scale reads =200N
Right scale reads=150 N
We have to find the mass in kg.
We know that
Weight of child= Sum of two scales=200+150=350 N
Acceleration due to gravity=
We know that
Weight= mg
Using the formula


Hence, the mass of child=35.7 kg
Scientists can tell this by looking at seismic waves released by earthquakes. ( if you need me to elaborate more ask)
V=IR can be changed to V/R=I so 10V/2 ohms = 5amps so 5 amps is your answer boss