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Which mechanism causes a GPS satellite's clock to tick faster in orbit compared to a clock on Earth?

A)Gravitational time dilation effect
B)Atmospheric pressure differential
C)Electromagnetic field interference
D)Increased satellite velocity effect

💡 Explanation

The curvature of spacetime due to Earth's mass causes gravitational time dilation; clocks at higher gravitational potential tick faster because general relativity dominates. Therefore, the satellite clock gains time, rather than differing results from atmospheric effects or velocity.

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