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Welding near GPS satellites causes which effect on signal precision?

A)Localized spacetime curvature changes signal timing
B)Thermal expansion disrupts atomic clock stability
C)Electromagnetic interference masks GPS signals
D)Material outgassing degrades satellite sensors

💡 Explanation

Welding's mass increase warps spacetime, causing gravitational time dilation because the equivalence principle links gravity and acceleration, consequently affecting GPS signal timing. Space sensors aren't the specific weakness from mass directly but relativistic effects; therefore, spacetime curvature rather than alternatives is the core issue.

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