A car starts from rest and accelerates uniformly at 3.0 m/s2 toward the north. A second car starts from rest 6.0 s later at the same point and accelerates uniformly at 5.0 m/s2 toward the north
How long after the second car starts does it overtake the first car? A) 12 s
B) 19 s
C) 21 s
D) 24 s
C
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A galvanometer has a coil with a resistance of 24.0 ?, and a current of 180 ?A causes full-scale deflection. If the galvanometer is to be used to construct an ammeter that deflects full scale for 10.0 A, what shunt resistor is required?
A) 234 ?? B) 432 ?? C) 423 ?? D) 342 ??
Parallel-Plate Capacitor: Each plate of an ideal air-filled parallel-plate capacitor has an area of 0.0010 m2, and the separation of the plates is 0.050 mm. An electric field of 7.4 × 106 V/m is present between the plates. What is the capacitance of this capacitor? (?0 = 8.85 × 10-12 C2/N ? m2)
A. 180 pF B. 120 pF C. 300 pF D. 240 pF E. 360 pF
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