Question

in a picture tube electrons travel (at a constant speed)20 cm in 10 to the power -5 s . what is their average speed​

Answer 1

Explanation:

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Answer 2

CONCEPT

The average speed is the total distance traveled by the object in a particular time interval . The average speed is a scalar quantity

Given

We have given the distance travelled by the electrons 20cm and the time taken to the travel the distance $10^{-5}$ s.

Find

We are asked to determine the average speed of the electrons.

Solution

The formula for average speed is found by calculating the ratio of the total distance travelled by the body to the time taken to cover that distance.

Average speed = Total distance travelled/ Total time taken

$S=\frac{20}{10^{-5} } \\\\= 20 (10^{5} )\\=2(10^{6} ) cm/s$

Hence, the average speed of the given electrons is  $2(10^{6} ) cm/s$.

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