Part A)
Distance is given as sum of total path length
So here as we are given that car drives 40 miles East and 30 miles West
So here the total path length is
Part B)
Displacement is given as straight line distance between initial and final position
So here we can see that
East
West
Now the total displacement will be
<u><em>so the displacement will be 10 miles East</em></u>
Answer:
Here is the solution hope it helps:)
<h2>
Energy used by heater is 8.21 x 10⁶ J</h2>
Explanation:
Energy = Power x Time
Power = Voltage x Current
Voltage = 120 V
Current = 9.5 A
Power = Voltage x Current
Power = 120 x 9.5 = 1140 W
Time = 2 hours = 2 x 60 x 60 = 7200 s
Energy = Power x Time
Energy = 1140 x 7200
Energy = 8208000 J
Energy used by heater is 8.21 x 10⁶ J
No the speed does not depend on its mass, yes to the second question and yes to the third
