Physics, 05.07.2019 04:20 genyjoannerubiera
Aspacecraft of mass 1500 kg orbits the earth at an altitude of approximately 450 km above the surface of the earth. assuming a circular orbit, what is the attractive force that the earth exerts to keep the spacecraft+ in orbit?(a) 1.28x 10^7 (n) (b) 2.99 x 10^7 (n) (c) 3.56 x 10^7 (n). (d) 4.11 x 10^7 (n) (e) 5.06x 10^7 (n)
Answers: 1
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Using a pedometer, you walk 3000 steps in 20 minutes, so your speed is 150 steps/min. each of your steps is 0.7 m long. what is your speed? 150 steps/min=/s=/h
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Physics, 22.06.2019 11:00
Engineers find a new metal that is stronger than steel but much lighter. this material is also significantly cheaper than what is currently used for most aircraft, available in large quantities, and easy to manufacture. the engineers are excited because this new material will lower the costs of buying and operating airplanes for companies. what is probably the best step for the engineers to make next?
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Aspacecraft of mass 1500 kg orbits the earth at an altitude of approximately 450 km above the surfac...
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