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Hi there.
00:01
So for this problem, we are told that the radar is used to determine the distances to various objects by measuring the round trip time for an echo from the object.
00:12
So for part a of this problem, we need to determine the distance to the planet venus if the echo time, so the echo time takes a time that is equal to one.
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1 ,000 seconds.
00:32
Now, we know that the rattad as the problem states words in the following way.
00:38
We send a signal to the planet in this case, and when that signal echoes from the object, we obtain the distance.
00:54
Now, the distance in this case is going to be 2 times the distance d that we want to obtain, because it's a wrong trip.
01:03
So in here, we can just use the equation that two times the distance d is equal to the speed of light times the time.
01:15
So we can solve in here for the distance d.
01:20
So we obtained that that is simply the product between the speed of light, the time divided by two.
01:25
And we just substitute those values.
01:27
We know that the speed of light is three times 10 to the 8 meters per second.
01:33
And the time that it takes to travel is 1 ,000 seconds, and this divided by 2.
01:42
So from this, we obtain a distance of 1 .5 times 10 to 11 meters...