Lainey is in charge of the nursery at the zoo. She needs to weigh the baby pandas to monitor their growth. What piece of lab equipment should she use?
A)
hand lens
B)
thermometer
spring scale
D)
graduated cylinder

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e