Total internal reflection occurs when the angle of incidence a. is less than the official angle. is zero c. equals the angle of reflection d. exceeds the critical angle

Jessie ran 5000 meters from the cops and an average speed of 6 meters / second before he got caught . how long did he run?

The rigid beam is supported by the three suspender bars. bars ab and ef are made of aluminum and bar cd is made of steel. if each bar has a cross-sectional area of 450 mm2, determine the maximum value of p if the allowable stress is (σallow)st = 200 mpa for the steel and ( σallow)al = 150 mpa for the aluminum. est = 200 gpa and eal = 70 gpa.

(a) if the pressure in gas is doubled while its volume is held constant, by what factor do (i) vrms and (ii) change? (b) is it possible to boil water at room temperature (20oc) without heating it? explain.