Answer:
v₂ = 97.4 m / s
Explanation:
Let's write the Bernoulli equation
P₁ + ½ ρ v₁² + ρ g y₁ = P₂ + ½ ρ v₂² + ρ g y₂
Index 1 is for tank and index 2 for exit
We can calculate the pressure in the tank with the equation
P = F / A
Where the area of a circle is
A = π r²
E radius is half the diameter
r = d / 2
A = π d² / 4
We replace
P = F 4 / π d²2
P₁ = 397 4 /π 0.058²
P₁ = 1.50 10⁵ Pa
The water velocity in the tank is zero because it is at rest (v1 = 0)
The outlet pressure, being open to the atmosphere is P1 = 1.13 105 Pa
Since the pipe is horizontal y₁ = y₂
We replace on the first occasion
P₁ = P₂ + ½ ρ v₂²
v₂ = √ (P1-P2) 2 / ρ
v₂ = √ [(1.50-1.013) 10⁵ 2/1000]
v₂ = 97.4 m / s
Start at the big tree, and take the instructions
one at a time:
1). Walk 15 west.
2). From there, turn around and walk 2 east.
3). From there, walk 7 more east.
Where are you from the big tree now ?
Aren't you 6 west of it ?
I mean, let's see some common sense here !
Answer:
Green, blue, indigo and violet.
Explanation:
The velocity of a wave is given by
where
f = Frequency = 
= Wavelength
The wavelength of the wave is 550.459 nm
Green light has wavelength which ranges from 500-565 nm.
So, the light which observed is green light and lower in wavelength than green light i.e., green, blue, indigo and violet.
Answer:
Explanation:
The given numbers are
The arrangement of the numbers from largest to smallest is
.
Answer:
There are 4 exresise ;endurance, strength, balance, and flexibility. Each one has different benefits.
Explanation:
Endurance activities, often referred to as aerobic, increase your breathing and heart rates.
Your muscular strength can make a big difference. Strong muscles help you stay independent and make everyday activities feel easier, like getting up from a chair, climbing stairs, and carrying groceries.
Balance exercises help prevent falls, a common problem in older adults that can have serious consequences.
Stretching can improve your flexibility. Moving more freely will make it easier for you to reach down to tie your shoes or look over your shoulder when you back your car out of the driveway.
hope this can help you...
