Answer:
A hydraulic lift for automobiles is an example of a force multiplied by hydraulic press, based on Pascal's principle. The fluid in the small cylinder must be moved much further than the distance the car is lifted.
Answer:
m = 5.27e18 kg
Explanation:
The pressure of a fluid is the weigth of a column of that fluid over base of that column.
The weight of the column is its mass multiplied by the acceleration of gravity. The acceleration of gravity varies with height, however the variation is small and can be ignored, consifering the acceleration of gravity constant.
So:
If we consider the entirety of the atmosphere as a single column the base would be the surface of Earth. Approximating Earth as a sphere:
Now, we can obtain the mass of the atmosphere:
Data:
Vo = 120 ft / s
α = 30°
t = 5 s
x = ?
Formulas:
cos(α) = Vo,x / Vo => Vo,x = Vo * cos(α)
x = Vo,x * t
Calculations:
Vo,x = 120 ft / s * cos(30) = 103.92 ft /s
x = 103.92 ft/s * 5 s = 519.6 ft
Answer: 519.6 ft
Answer:
60.69 m
Explanation:
Using Newton's equation of motion,
s = vt.............. Equation 1
Where s = distance traveled, v = velocity, t = time.
Note: During the inattentive period, the car travels with a constant velocity.
Given: v = 95 km/h = (95×1000/3600) = 26.39 m/s, t = 2.3 s.
Substitute into equation 1
s = 26.39(2.3)
s = 60.687 m.
s ≈ 60.69 m.
Hence the car travels 60.69 m during the inattentive period.