Question

The needle of a record player moves 7.2 cm when playing a particular record. If the record makes 900 revolution, find the width of the groove.
pls tell me the answer...
(Give answer in explaination) plz​

Answer 1

Answer:

$8.01 \times {10}^{ - 3} cm$

Step-by-step explanation:

distance covered by needle=7.2cm

number of revolutions=900

width of groove=distance covered/(number of revolutions-1)

$\frac{7.2}{900 - 1}$

$\frac{7.2}{899}$

0.00801 cm

$8.01 \times {10}^{ - 3} cm$

Answer 2

Step-by-step explanation:

8.01 * 10 ^-3 is answer

hope it helps you