Question

ms. turner and her students want to build a working model of a maglev train. they made four electromagnet prototypes, and they conducted several tests on the prototypes. they will use the results shown below to create a final electromagnet design.

prototype	maximum weight that can be supported (kg)	battery life (h)	levitation height of test magnet (mm)
x	6	6	1.1
y	6	5.5	1.2
z	6	4.5	4.5

combining the strengths of which two prototypes would most likely lead to a new design that has an optimized battery life and levitation height combination?

a. x and z
b. w and z
c. w and y
d. x and y

Explanation:

Step1: Analyze battery life

W has the longest battery - life (10 h) among the prototypes.

Step2: Analyze levitation height

Z has the highest levitation height (4.5 mm) among the prototypes.

Step3: Determine the combination

Combining the strengths of W (long battery - life) and Z (high levitation height) is most likely to lead to an optimized battery - life and levitation height combination.

Answer:

B. W and Z