Question

according to this triple beam balance the correct measurement is a. 37.0g b. 37.1g c. 30.7g d. 37.3g

Explanation:

Step1: Identify values on beams

The top - most beam reads 30 g, the middle beam reads 0 g, and the bottom beam reads 7.3 g.

Step2: Calculate total mass

Add the values from the three beams: $30 + 0+7.3=37.3$ g.

Answer:

D. 37.3g