Chapter 12: Q5P (page 510)

Synchronized clocks are stationed at regular intervals, a million apart, along a straight line. When the clock next to you reads 12 noon:
(a) What time do you see on the $90^{t h}$ clock down the line?
(b) What time do you observe on that clock?

Short Answer

Expert verified

(a) The time on clock down the line is 11:55 A.M.

(b) The time observed by you on $90^{th}$ clock is 12 noon.

Step by step solution

Given information:

Given data:

The distance between two adjacent clocks is 1 million km .

Determine the time on 90thclock down:

(a)

Write the relation between distance, speed, and time.

$t = \frac{d}{c}$ …… (1)

Here, d is the distance, and c is the speed of light $(3 \times 10^{8} m / s)$ .

Calculate the distance between $90^{th}$ clock and the next clock.

$d = 90 \times (1 million km \times \frac{10^{9} m}{1 million km}) d = 90 \times 10^{9} m$

Substitute the value of d and c in the above relation.

$t = \frac{(90 \times 10^{9} m)}{(3 \times 10^{8} m / s)} t = 300 s \times (\frac{1 \min}{60 s}) t = 5 \min As the time is 5 \min less than 12 noon, the 90^{th} clock down will read 11 : 55 A . M . . Therefore, the time on 90^{th} clock down the line is 11 : 55 A . M .$

Determine the time observed by you on 90thclock down:

(b)

Since, 12 noon is observed on the clock.

Therefore, the time observed by you on $90^{th}$ clock is $12 noon$ .

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Synchronized clocks are stationed at regular intervals, a million apart, along a straight line. When the clock next to you reads 12 noon:
(a) What time do you see on the $90^{t h}$ clock down the line?
(b) What time do you observe on that clock?

Short Answer

Step by step solution

Given information:

Determine the time on 90thclock down:

Determine the time observed by you on 90thclock down:

One App. One Place for Learning.

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Synchronized clocks are stationed at regular intervals, a million apart, along a straight line. When the clock next to you reads 12 noon:(a) What time do you see on the 90thclock down the line?(b) What time do you observe on that clock?

Short Answer

Step by step solution

Given information:

Determine the time on 90thclock down:

Determine the time observed by you on 90thclock down:

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Physics Textbooks

Conservation of Energy and Momentum

Circular Motion and Gravitation

Waves Physics

Scientific Method Physics

Rotational Dynamics

Force

Study anywhere. Anytime. Across all devices.

Synchronized clocks are stationed at regular intervals, a million apart, along a straight line. When the clock next to you reads 12 noon:
(a) What time do you see on the $90^{t h}$ clock down the line?
(b) What time do you observe on that clock?