Miss chiff, the seventh-grade science teacher, greets her students in an unusual manner. she stands at the door of her classroom, scuffing her feet back and forth on the carpet. as she does so, electrons move from the carpet to her shoes to her body. miss chiff is now charged with a , negative) type of charge.

Negative

Explanation:

The charge of a body is defined by the lack or excess of electrons on a body. When something loses electrons it becomes charged positively and when something gains electrons it is charged negatively.

Here, Miss Chiff gains electrons from the carpet because of her rubbing of the carpet. As she gains electrons Miss Chiff is negatively charged and the carpet is positively charged.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

c) up is the direction the magnetic force is acting on the charge.