B.ocean waves
C.surface waves
D.longitudinal waves
Answer:
1,803,036.67 W
Explanation:
Data provided in the question:
People per hour that can be moved by lift = 49800
Height of movement, h = 190 m
Average mass per person = 70 kg
Now,
Power = Rate of doing work
Thus,
Power = ΔU
= mgh
here,
m = total mass
g = acceleration due to gravity
or
Power = (70kg × 49800)(9.8)(190)
or
Power = 6,490,932,000 J per hour
also,
Watt = Joule/second
Therefore,
Power = 6,490,932,000 ÷ 3600
= 1803036.67 W
To estimate the maximum total power needed for Squaw Valley ski area to move 49800 people per hour on their lifts, we calculate the work done per person per hour and then divide it by the time taken to travel vertically by 190 m. The estimated maximum total power needed is 3.31 x 10^8 W.
To estimate the maximum total power needed to move 49800 people per hour on a skilift at Squaw Valley, we can calculate the work done per person per hour and then divide it by the time taken to travel vertically by 190m. The work done is equal to the potential energy gained, which is given by the formula mgh, where m is the average mass per person (70 kg), g is the acceleration due to gravity (9.8 m/s^2), and h is the vertical height gained (190 m). Multiplying this by the number of people per hour gives us the total work done per hour. Dividing this by the time taken to travel the vertical height gives us the maximum power needed. The power is given by the formula P = W/t, where W is the work done and t is the time taken.
Using the given values, we have:
Work done per person per hour: (70 kg) x (9.8 m/s^2) x (190 m) = 128660 J
Total work done per hour: 128660 J x 49800 = 6.40 x 10^9 J
Time taken to travel vertically by 190m: 190 m / (9.8 m/s^2) = 19.39 s
Maximum power needed: (6.40 x 10^9 J) / (19.39 s) = 3.31 x 10^8 W
#SPJ3
W = mgh.
m is mass in kg,
g is acceleration due to gravity = 9.81 m/s²,
h is height = 12 m
= 3.8 * 9.81 * 12
= 447.336 Joules
That is false. I just took the test and it is not the wavelength. The correct answer is antinode NOT wavelength.