The magnitude of the electric field at pointC is
a) greater than the magnitude of the electric field atpoint B.
b) less than the magnitude of the electric field at point B.
c) equal to the magnitude of the electric field at pointB.
d) unknown because the value of the electric potential at point Cis unknown.

20. threshold braking in the vehicle's braking system occurs when a. the brake pedal is pushed, heel on floorboard, with full foot pressure. b. the brakes are exerting full braking power, without traction loss. c. the driver begins pushing down the brake pedal, with moderate slowdown. d. the brakes just begin to take hold with a gradual slowdown.

Rank the automobiles based on the magnitude of the force needed to stop them, from largest to smallest.2000 kg car going 5m/s500 kg car going 20 m/s1000 kg car going20m/s500 kg car going10m/s1000 kg car going10/s4000 kg car going 5m/s 0 0 603

Acid precipitation chemically weathering a 5.0-kg limestone rock . which coukd be the result ?