Electronics. A product line of portable radios has 4 AA Ni-Cd batteries, small-device electronics weighing 100 grams, two speakers with Alnico magnets weighing 700 grams, a transformer weighing 500...

Electronics. A product line of portable radios has 4 AA Ni-Cd batteries, small-device electronics weighing 100 grams, two speakers with Alnico magnets weighing 700 grams, a transformer weighing 500 grams, and ABS casing weighing 400 grams. Alnico has an embodied energy of 89 MJ/kg. Data for the other components can be found in Table 6.3 and the record for ABS is in Chapter 15. Which of these makes the largest contribution to the embodied energy?