The reason why icebergs float in the ocean has to do with temperature. Icebergs are colder than the ocean water and therefore the cold water is less dense than the warm water and this causes the Iceberg to float.
The friction factor and head loss when velocity is 1m/s is 0.289 and 1.80 × 10^8 respectively. Also, the friction factor and head loss when velocity is 3m/s is 0.096 and 5.3 × 10^8 respectively.
<h3>How to determine the friction factor</h3>
Using the formula
μ = viscosity = 0. 06 Pas
d = diameter = 120mm = 0. 12m
V = velocity = 1m/s and 3m/s
ρ = density = 0.9
a. Velocity = 1m/s
friction factor = 0. 52 × 
friction factor = 0. 52 × 
friction factor = 0. 52 × 0. 55
friction factor 
b. When V = 3mls
Friction factor = 0. 52 × 
Friction factor = 0. 52 × 
Friction factor = 0. 52 × 0. 185
Friction factor 
Loss When V = 1m/s
Head loss/ length = friction factor × 1/ 2g × velocity^2/ diameter
Head loss = 0. 289 × 
× 
× 
Head loss = 1. 80 × 10^8
Head loss When V = 3m/s
Head loss = 
× 
× 
×
Head loss = 5. 3× 10^8
Thus, the friction factor and head loss when velocity is 1m/s is 0.289 and 1.80 ×10^8 respectively also, the friction factor and head loss when velocity is 3m/s is 0.096 and 5.3 ×10^8 respectively.
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Answer:
All of these answers are dependent upon the specific scenario, but here are some general answers.
1. An object with a greater height will have more potential energy.
2. Potential energy can be changed into kinetic energy as an object falls. It loses height (potential energy) and gains speed (kinetic energy).
3. Depends on what scenario your class had.
Answer:
Work done by the gardner is 500 J
Explanation:
As we know that the gardner apply force perpendicular upward by magnitude 300 N and along the floor horizontal force is 100 N
so we have
now the displacement of the gardner along the floor is
now work done is given as
so we have
Answer: The momentum principle depends on MASS and VELOCITY.
Explanation:
The momentum principle states that net force changes the the momentum of an object where momentum is the product of the MASS of the body and it's VELOCITY.
Thus, momentum = mass(kg) ×velocity( m/s)= kgm/s ( derived unit)
Also to determine the rate of change of momentum;
Mass=m, initial velocity =u, final velocity = V and time =t
Initial momentum = mu
Final momentum = mv
Change in momentum = mv - mu
= m( v- u)
Rate of change of momentum=
m( v -u)/t --> equation 1
But V = u + at
Hence, a = v -u/t
Substitute for v -u/ t in equation 1
F = Kma, where k is constant and has the value of 1.
Therefore F = ma
Newton is the SI unit if force. It is defined as the force which gives a mass of 1kg an acceleration of 1 m/s².
IMPULSE is defined as the change of momentum of a body (mv-mu) or the product of force and time.
Thus impulse = force × time = m (v-u)
The unit is Ns ( Newton seconds) which is the same as change in momentum.
