Question

1. 2. Find out the longitude of place Y, where the time is 7am when the time at place Z 140 degrees, is 2pm.​

Answer 1

Explanation:

What is the longitude of a place where the local time is 1:15 p.m when it is 4 a.m in Chicago (88°W)?

each day contains 24 hours ;

i. e., earth will rotate 15°degrees per hour

360/24=15;

24*60/360=4;

for each degree increase in longitude towards east add 4min

and for each longitudinal degree increase towards west substract 4min from the prime meridian time;

the longitude at the prime meridian is referred to 0°;

greenwich is our prime meridian ;

the time at this place is generally referred as GMT(greenwich meridian time)

in this case there is no need of it

we have the exact time and longitude of chicago ;

and the time at any unknown place;

we can find the longitude of this unknown place by using the slope method in straight lines;

855min/(x-88)=4min/1;

855/4=x-88;

213.75+88=x;

x=301.75;

that means the longitude of that unknown place is 301.75°w;

Answer 2

Answer:

47 to be observe ----------