draw a diagram to show refraction through a glass slab, when the incident ray of light. i) falls on it at 90 ii) falls on it at an angle less than 90

Calculate the amount of heat produced when 18000 coulombs of charge is transferred in one hour through a potential difference of 50v

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.

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