why the down linking frequency of a satellite is smaller than uplinking frequency?

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If Nasa where to sink a large tube down a few miles into one of the deepest parts of the ocean or a spiral tube not so deep. Then fit electromagnetic monorail running gear to a sledge and then put a space cargo vehicle inside the sledge. With ball valves to compartmentalise the tube off to keep a constant pressure with inert gases as the space shuttle accelerates using electromagnetism to gain altitude and then loses the sledge. Next fires it's main rocket engines to carry on up to space. Would this idea work and would it save money on fuel if the space cargo vehicles where only say 5 ton cargo holds. Also they could be reusable with their rocket engines.

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how many times a wheel revolves in a mile

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My question is. How many types of REGISTER? and define its all types of REGISTER? plzzz

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what is a desk check,test plan and dry run as in programming methods

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what are solar cell operated vehicles

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i am doing m.sc chemistry from delhi university..in my first yr i got 57% i am very confused about which subject should i opt for in second year...and what to do after m.sc if not selected in P.hD entrance exam..is their any job after m.sc???

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name the present Supreme Court judge who is from Assam :

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What does i. Salt ii. Vinegar iii. Heat iv. Sugar v. Very cold vi. Drying vii. Pressurization viii. Preservatives ix. Radiating do to the food? in regards to preserving food.

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how to create a simple presentation in flash 5

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If E = 5, what number does SPEED represent?

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If 2 is a prime no , then write a C program to test a number is prime or not

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