Question

what are the possible reason for a computer to work slowly​

Answer 1

Answer:

Activity: To identify pitch of a sound

1. Take two hack-saw blades or metal

scales of 30 cm length and a brick.

2. Place the first blade/scale on the

table such that 10 cm portion is on

the table and 20 cm portion is in air.

3. Place the second blade/scale on the

table with 25 cm portion on the

table and 5 cm portion in air.

4. See that the gap between two

blades is 10 cm and place the brick

(as weight) on the scales.

5. Vibrate both blades with same

force. Observe the vibrations and hear the sounds produced.

6. We observe that the number of vibrations produced is less in first blade/scale when

compared to the second blade/scale.

7. The sound produced by the second blade/scale is shriller when compared to the sound

produced by the first blade/scale.

MUSIC AND NOISE:

Music: The sound which is pleasant to hear is called MUSIC.

Example: Sounds produced by musical instruments.

Noise: The sound which is unpleasant to hear is called NOISE.

Example: Irregular sounds produced in a class-room by the students.

AUDIBLE RANGE OF HUMAN BEINGS:

Note: The number of vibrations per second is called FREQUENCY.

1. The sounds that a normal human being can hear are called AUDIBLE SOUNDS.

2. The frequency of the audible sound ranges from 20 vibrations/second to 20000

vibrations/second.

3. The frequency of inaudible sounds is less than 20 vibrations/second or more than

20000 vibrations/secon

Explanation:

1. thanks my answer......

Answer 2

Answer:

A slow computer is often caused by too many programs running simultaneously taking up processing power and reducing the PCs performance . Some programs will continue running in the background even after you have closed them or will start automatically when you boot up your computer.

I hope this helps you.