Inside a space station in orbit around Earth:
a. there is no gravity because of the height of the station far above Earth.
b. there is no gravity because the station is in orbit.
c. gravity appears absent because everything is moving and accelerating together.
d. objects have no mass because they are in orbit.
e. gravitational effects feel the same as on Earth.
c
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Daylight Saving Time begins on the first Sunday of ______________ and ends on the last Sunday in ______________
Fill in the blank(s) with correct word
Cepheid variables can be used to determine distances because their _____________ can be determined from their _____________
Fill in the blank(s) with correct word
A perpetual motion machine of the first kind
A. violates the first law of thermodynamics B. would be a good investment C. violates the second law of thermodynamics D. violates the zeroth law of thermodynamics
A 1.00 kg stone attached to a 1.00 m long string is traveling in a vertical circular orbit. What is the minimum tangential velocity at the top of the vertical circular orbit to keep the string from going slack?
A. 5.63 m/s B. 5.31 m/s C. 5.00 m/s D. 4.50 m/s E. 3.13 m/s