The circulation around the cylinder is 0.163Js/kg.
To find the answer, we have to know more about the stream flow.
<h3>
How to find the circulation around the cylinder?</h3>
, where d is the density at the sea level.
- We have the expression for lift per unit circulation as,
- Thus, the circulation around the cylinder is,
Thus, we can conclude that, the circulation around the cylinder is 0.163Js/kg.
Learn more about stream flow here:
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The dependent variable is: <em>"number of vocabulary words subjects can remember"</em>
<h3>
Which is the dependent variable?</h3>
In an experiment, we basically see how changing one variable affects another variable.
In this case, the experiment is:
<em>" if sleep affects the number of vocabulary words subjects can remember."</em>
Then the hours of sleep would be the independent variable (the one that the scientist can change) and the number of vocabulary words subjects can remember is the dependent variable (that depends on the independent variable).
So the correct answer is:
<em>"number of vocabulary words subjects can remember"</em>
If you want to learn more about variables:
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“The mechanical energy is conserved" in the given system is true out of all given options.
Answer: Option 2
<u>Explanation:
</u>
According to law of conservation of energy, the energy will neither be created nor be destroyed, irrespective of the type of energy. As in the present case, the ball is bowled and it is travelling to ground, so the mechanical energy is working in this case. Thus the mechanical energy will be conserved. Even it can be shown as follows.
As the 2 kg ball is travelling with a speed of 7 m/s, the kinetic energy exhibited by the ball while falling to ground will be
Thus, applying given values, we get,
Similarly, as the ball is 2.5 m above ground, the potential energy will also be exhibited by the ball at that position. So the potential energy will be
Thus,
Thus as the magnitude of kinetic energy is equal to the magnitude of potential energy exhibited by the ball with varying direction, the net energy will be zero. This is because the kinetic energy will be acting in opposite direction to the potential energy exhibited by the ball. Hence as the net energy is zero, the mechanical energy is conserved.
Answer:
The player's speed is 1.93 m/s.
Explanation:
Given that,
Mass of football = 71.5 kg
Speed = 2.00 m/s
Mass of football = 0.470 Kg
Speed = 12.5 m/s
We need to calculate the initial momentum of the football player and ball
Put the value into the formula
We need to calculate the final momentum of the system
Put the value into the formula
We need to calculate the relative to the ground
Using conservation of momentum
Put the value into the formula
Hence, The player's speed is 1.93 m/s.