Asked by rima in Math

The ratio of the number of boys to the number of girls in a hall was 3:5.After 84 girls had left the hall,the ratio of the number of boys to the number of girls became 2:1.How many girls were in the hall?

Asked by Jiminsshi in Physics

Describe and explain what will happen if a electric bell is not suspended by a string but rests on the base supporting the bell jar instead

Asked by Jiminsshi in Physics

A student tries to produce notes of higher frequency by blowing a trumpet harder. Discuss whether he will succeed

Asked by Jiminsshi in Physics

State two characteristics that the wall should have to make it a good reflecting surface

Asked by Jiminsshi in Physics

The diagram is below
If the same sound wave produced by the tuning fork is transmitted through wood instead describe and explain how it's speed,wavelength and frequency are affected

Asked by Jiminsshi in Physics

If the same sound wave produced by the tuning fork is transmitted through wood instead describe and explain how it's speed,wavelength and frequency are affected

Asked by Jiminsshi in Physics

Describe how the sound travels through the air to reach the ear of the person striking the bell

Asked by Jiminsshi in Physics

In an experiment,a ringing electric bell is suspended inside a bell jar by a thin string. A vacuum pump is then used to draw out air of the bell jar.
(A) when the vacuum pump is not switched on, the ringing of the bell can be heard. When the vacuum hell is switched on , the loudness of the bell decreases until only a very faint sound can be heard. Explain this observation

Asked by Jiminsshi in Physics

Not sure how to do

Asked by Vedanti in Math

How to solve qn 52?

Asked by Vedanti in Science

How to solve qn 52 and 53???

Asked by Vedanti in Science

How to solve qn 52 and 53???

Asked by Vedanti in Math

How to solve ...please help! Urgent!!!

Asked by Vedanti in Science

How do i solve this?

Asked by Vedanti in Science

What is a matter

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