6. There is no escape velocity from the moon. True or False? 7. If TE and TM are
ID: 1628223 • Letter: 6
Question
6. There is no escape velocity from the moon. True or False?7. If TE and TM are the orbital periods of the Earth and the Mars around the Sun are RE and RM are their distances from the sun, then kepiers 3rd law for these planets is written as A. TE/TM = RE/RM B. (TM/TE)^2 = (RE/RM)^2 D. TE/TM=RM/RE E. None
8. If you whirl around in a circle a stone tied to a string, you feel the centripetal force. True or False? 6. There is no escape velocity from the moon. True or False?
7. If TE and TM are the orbital periods of the Earth and the Mars around the Sun are RE and RM are their distances from the sun, then kepiers 3rd law for these planets is written as A. TE/TM = RE/RM B. (TM/TE)^2 = (RE/RM)^2 D. TE/TM=RM/RE E. None
8. If you whirl around in a circle a stone tied to a string, you feel the centripetal force. True or False? 6. There is no escape velocity from the moon. True or False?
A. TE/TM = RE/RM B. (TM/TE)^2 = (RE/RM)^2 D. TE/TM=RM/RE E. None
8. If you whirl around in a circle a stone tied to a string, you feel the centripetal force. True or False?
Explanation / Answer
(6) escape velocity is the speed at which the sum of an object's kinetic energy and its gravitational potential energy is equal to zero;
false becuase moon has escape velocity its value is 2.4 km/s
(7)
from the Kepler's third law
T^2 is proportional propotional to R^3
so
( TM/TE)^2 = ( RM/RE)^3
or( TE/TM)^2 = ( RE/RM)^3
so answer is E
(8) true because to move in a circular path, centripetal force acting toward your finger so you feel the centripetal force
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