Question

please give me answer B & C
question number 1)​

Answer 1

Answer:

b) thermometer

Explanation:

i think you understand the answer

Answer 2

1. glass thermometer

One of the most common devices for measuring temperature is the glass thermometer. This consists of a glass tube filled with mercury or some other liquid, which acts as the working fluid.

2. A pendulum is a weight suspended from a pivot so that it can swing freely. ... The time for one complete cycle, a left swing and a right swing, is called the period. The period depends on the length of the pendulum and also to a slight degree on the amplitude, the width of the pendulum's swing.