One example of a physical change is
a. burning paper.
b. baking cookies.
c. the rusting of iron.
d. mixing a milkshake.

The two required components for a generator are

Two technicians are discussing a starter that clicks repeatedly when the key is turned to the crank position. technician a says the solenoid hold-in winding is open. technician b says the solenoid pull-in winding is open. who is correct?

If a 250-g mass is hung on two identical springs, hung side by side , and both support the 250-g mass, how much will each spring stretch?