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Q1: A block starts from rest at the
Q4: Two radio antennas are 10 km apart
Q15: The objective lens of an astronomical telescope
Q17: _ certificates are used in most network
Q33: Doubling the root mean square speed of
Q34: A 9.8 kg solid sphere,made of metal
Q36: There are four general means of authenticating
Q41: The principal objective for developing a _
Q44: You move a lens from your eye
Q50: The speed of light in a material