To _____ is to make observations of reference objects, checks on instrument performance, and calculations of units conversations, needed to completely understand measurement of unknown quantities
A) validate
B) verify
C) calibrate
D) standardize
C
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A CD has a diameter of 12.0 cm. If the CD is rotating at a constant frequency of 4.00 cycles per second, then the tangential velocity of a point on the circumference is
A. 1.25 m/s. B. 1.31 m/s. C. 1.51 m/s. D. 1.82 m/s. E. 2.00 m/s.
A solenoid made of copper wire has 100 turns in 3 cm and carries a current of 3 A in air. The ferromagnetic material 78 Permalloy is inserted into the coil. What is the flux density created by the coil with this material inserted?
What will be an ideal response?
A tiny gun made of a strong but very light material fires a bullet more massive than the gun itself. For such a weapon
A) the target would be safer than the shooter. B) recoil problems would be lessened. C) conservation of energy would not hold. D) conservation of momentum would not hold. E) both conservation of energy and momentum would not hold.