Average speed=total distance traveled/time. Total distance=the sum of the two short distances=79*2+77*3=389 km. Total time used to travel is 2+3=5 hr. Average speed is 389/5=77.8 km/hr.
R is proportional to the length of the wire:
R ∝ length
R is also proportional to the inverse square of the diameter:
R ∝ 1/diameter²
The resistance of a wire 2700ft long with a diameter of 0.26in is 9850Ω. Now let's change the shape of the wire, adding and subtracting material as we go along, such that the wire is now 2800ft and has a diameter of 0.1in.
Calculate the scale factor due to the changed length:
k₁ = 2800/2700 = 1.037
Scale factor due to changed diameter:
k₂ = 1/(0.1/0.26)² = 6.76
Multiply the original resistance by these factors to get the new resistance:
R = R₀k₁k₂
R₀ = 9850Ω, k₁ = 1.037, k₂ = 6.76
R = 9850(1.037)(6.76)
R = 69049.682Ω
Round to the nearest hundredth:
R = 69049.68Ω
Answer:
Explanation:
For reduction
Execution time = (instructions * CPI)/(Clock rate)
Since CPI is increased by 18%
18/100 +1 = 1.18
Therefore
P1 CPI = CPI x 1.18
P2 CPI = CPIx 1.18
P3 CPI = CPI x 1.18
Since clockrate reduces by 30% we have it to be a 0.7
P1: (Instructions x P1CPI) / 0.7
P2: (Instructionsx P2CPI) / 0.7
P3: (Instructions x P2CPI) /0 .7
