Answer:
I would say a pond
Explanation:
A pond is more still than an ocean, therefore you could see your reflection better
Answer:
The the analysis for the free fall part should be done under the constant acceleration.
Explanation:
In the given problem, the jumper is falling under the free fall. Since, no external force is acting on the body therefore, the fall will be under the action gravity only. also, the acceleration due to gravity is always constant.
Therefore, the the analysis for the free fall part should be done under the constant acceleration.
the brain's ability to change throughout the lifespan as a result of experience
Answer:
0.96 kWh
Explanation:
First of all, we can find the power of the appliance using the formula:

where
V = 120 V is the voltage of the source
I = 2 A is the current
Substituting,

Now we want to find the amount of energy used by the applied in a time of
t = 4 h
The amount of energy is given by

where
P = 0.24 kW
t = 4 g
Substituting,

Answer:
The rate of flow of water is 71.28 kg/s
Solution:
As per the question:
Diameter, d = 18.0 cm
Diameter, d' = 9.0 cm
Pressure in larger pipe, P = 
Pressure in the smaller pipe, P' = 
Now,
To calculate the rate of flow of water:
We know that:
Av = A'v'
where
A = Cross sectional area of larger pipe
A' = Cross sectional area of larger pipe
v = velocity of water in larger pipe
v' = velocity of water in larger pipe
Thus

v' = 4v
Now,
By using Bernoulli's eqn:

where
h = h'




Now, the rate of flow is given by:

