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Which mechanism causes lower satellite clock rates relative to Earth?

A)Gravitational spacetime curvature
B)Atmospheric density gradient
C)Ionospheric refraction variance
D)Relativistic Doppler shift

💡 Explanation

Gravitational spacetime curvature causes slower clock rates at higher gravitational potential because spacetime is distorted; therefore, satellite clocks run slower relative to ground clocks, rather than solely due to relative velocity.

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