Question

(m-n)2+(9-m) factorise it​

Answer 1

Answer:

Q. A simple pendulum takes 10 oscicallations in 20 seconds what is its time period?

Q2. Give reason for the following -

(a) School Bells are made up of metals

(b) Electric wires are made up of copper

(c) Ornaments are made up of gold and silver

Q3. How is sound produced and how it is transmitted and heard by us?

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