Physics, 10.10.2019 00:00 mucciak3634
When a ball is launched from the ground at a 45° angle to the horizontal, it falls back to the ground 50 m from the launch point. if it is launched at the same speed directly upward, (a) how high does it get? (b) how much longer does it spend in the air?
Answers: 3
Physics, 21.06.2019 19:00
Aman tries to push a box of mass 4 kg with a force of 5 n but the box remains stationary if the coefficient of static friction is 0.45, what is the value of the maximum force of friction?
Answers: 2
Physics, 22.06.2019 17:40
Which component of the earth’s atmosphere is decreased due to photosynthesis?
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Physics, 22.06.2019 23:40
To place a communications satellite into a geosynchronous orbit at an altitude of 22,240 mi above the surface of the earth, the satellite first is released from a space shuttle , which is in a circular orbit at an altitude of 185 mi, and then is propelled by an upper-stage booster to its final altitude. as the satellite passes through a, the booster's motor is fired to insert the satellite into an elliptic transfer orbit. the booster is again fired at b to insert the satellite into a geosynchronous orbit. knowing that the second firing increases the speed of the satellite by 4810ft/s, determine (a.) the speed of the satellite as it approaches b on the elliptic transfer orbit, (b.) the increase in speed resulting from the first firing at a.
Answers: 2
When a ball is launched from the ground at a 45° angle to the horizontal, it falls back to the groun...
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