Help me please Fill in the blanks:
1. Time taken by an object to complete one oscillation is called
2. Loudness is determined by the
of vibration.
3. The unit of frequency is
4. Unwanted sound is called
5. The shrillness of a sound is determined by the of vibration.
5. The two kinds of sounds we cannot hear are
and
7. Choose the correct answer. Sound can travel through
(a)
solids only (c) liquids only (d) solids, liquids, and gases
. Voice of which of the following is likely to have a minimum frequenc
(a) Baby girl (b) Baby boy (c) A man (d) A woman
. Sound is a kind of
(a) work (b) energy (c) force (d) pressu
0.1 hertz is equal to
(a) 1 vibration per minute (b) 1​

1) Time period

2) amplitude

3) Hertz or hz

4) Noise

5) frequency

6) infrasonic and ultrasonic

7) solid liquid and gas

8) A man

9) energy

10)1 vibration per minute

answer: option c. i.e. electric current flowing “downhill” from the negative electrode to the positive electrode in a battery

explanation:

the water analogy to the circuits define the pipes (water flows) to the electric current. now, we know that the electric current flows from the positive terminal to the circuit (as shown in the diagram attached).

hence, option c is the correct answer.

as a general rule, scissors have blades less than 6 in (15 cm) long and usually have handles with finger holes of the same size. shears have blades scissors used to cut hair or fabric must be much sharper.