Answer:
The firefighter who holds the hose in the backward direction will experience greater force.
Explanation:
Lets take
mass flow rate = m
Inlet velocity = v₁
Exit velocity = v₂
When water leaves in the same direction ,then change in the linear momentum = m (v₂ - v₁)
And we know that change in the linear momentum is known as force.
F₁ =m (v₂ - v₁) ----------1
When water leaves in the opposite direction(U turn) ,then change in the linear momentum = m (v₂ +v₁)
F₂= m (v₂ +v₁) --------2
F₂ >F₁
There fore when water leaves in the U turn pipe will feel more force.
The firefighter who holds the hose in the backward direction will experience greater force.
Answer:
<h3>The answer is 6000 N</h3>
Explanation:
The force acting on an object given it's mass and acceleration can be found by using the formula
force = mass × acceleration
From the question we have
force = 3000 × 2
We have the final answer as
<h3>6000 N</h3>
Hope this helps you
We determine the rate of a reaction from the given rate law by substituting the given concentrations and the order of the substances. We calculate as follows:
<span>rate = k[A]^m[B]^n
</span><span>rate = (1 x 10^-2) [2]^2 [3]^1
rate = 0.12 M /s
The rate law of a reaction is an expression that is related to the reaction rate. The parameters used are the concentration or the pressure of the reactants in the reaction. An example would be:
</span><span>
A = B + C
The rate law would be:
Rate = k[A] where k is the reaction rate constant and determined by doing experiments</span>
Answer:
Possibly m/s^2 (metres per second squared)
Explanation:
There are a few different units for acceleration so I need more information, but generally the standard unit is metres per second squared.