Question 7 Chris and Dave raced up a 25 m hill. Chris took 40 seconds to reach the top and Dave took 45 seconds. Both men have the same weight. Which of the following is true?
Chase did more work than Dave
O Dave did more work than Chris
Chris produced more power than Dave
Dave produced more power than Chris

Sorry i don’t know what to do

Answer: 1.4 seconds which is the third optionexplanation: current is defined as the flow of charge per timetherefore, the equation that relates current, charge and time can be expressed as follows: i = δq / δtwhere: i is the current given = 1.8 ampereδq is the charge given = 2.5 coulombδt is the time required for the flow of the given charges to give the 1.8 ampere.substitute with the givens in the above equation to get the time as follows: 1.8 = 2.5 / δtδt = 2.5 / 1.8 = 1.38888 which is approximately 1.4 secondshope this was !

Dformation of a precipitate