Physics, 15.04.2020 03:10 makennskyee1198
Astronaut Mark Uri is space-traveling from planet X to planet Y at a speed of o.65e relative to the planets, which are at rest relative to each other. When he is precisely halfway between the U is spacetraeling from planet X to planet Y at planets, a distance of 1.0 light hour from each one as measured in the planet frame, nuclear planets, a distance of 1.0 light-hour from each one as measured in the planet frame, nuclear devices are detonated on both planets. The explosions are simultaneous in Mark's frame. What is the difference in the time of arrival of the flashes from the explosions as observed by Mark?
A. 90 min
B. 0 min O
C. 180 min
D. 360 min
E. 113 min
Answers: 1
Physics, 21.06.2019 16:10
If two metal balls each have a charge of -10^-6 c and the repulsive force between them is 1 n, how far apart are they? (coulomb's constant is k = 9.0x 10^9 n-m^2/c^2? 9.5 m 9.0 mm 9.5 cm 0.9 m .
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Physics, 22.06.2019 00:40
The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.
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Physics, 22.06.2019 08:30
What object a collides with object b and bounces back its final momentum is?
Answers: 1
Astronaut Mark Uri is space-traveling from planet X to planet Y at a speed of o.65e relative to the...
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