The angle between two vectors is 175.0∞. What is the scalar product of these two vectors if their magnitudes are 4.000 cm and 3.000 cm? a. 11.95

b. 11.95 cm

c. -11.95

d. In order to solve the problem you need to know which vector has a magnitude of 4.000 cm and which vector has a magnitude of 3.000 cm.

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How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

Ammonia enters the expansion valve of a refrigeration system at a pressure of 10 bar and a temperature of 18oc and exits at 6.0 bar. the refrigerant undergoes a throttling process. determine the temperature, in oc, and the quality of the refrigerant at the exit of the expansion valve.

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.