Туристи пройшли рівниною відстань 5 км за 1,5 год., потім зупинилися на відпочинок на 0,5 год. і продовжили рух в гори, пройшовши ще 3 км за 2 год. З якою середньою швидкістю рухалися туристи на усьому маршруті?

Light that is polarized along the vertical direction is incident on a sheet of polarizing material. only 96% of the intensity of the light passes through the sheet and strikes a second sheet of polarizing material. no light passes through the second sheet. what angle does the transmission axis of the second sheet make with the vertical?

Atelevision set that has been running for a while heats up even the air around it. which two laws of thermodynamics could be used to analyze this scenario

Sound is a disturbance that travels through a medium as a