Give the reasons for the following features of the thermometer : a. a bulb of thin glass
b. the constriction near the bulb
c. a tube of fine bore

Hunter’s velocity was 4.5 m/s. at the end of his race, his velocity was the same. which best describes his movement? his movement stopped. his acceleration is zero. his time was constant. his acceleration was positive.

Why do metals "give up" their valence electrons?

The electric field inside a cell membrane is 8.0mn/c. what's the force on a singly charged ion in this field?