The Newton's second law of motion can be used to determine the why certain players are used certain positions because each player has unique mass and as such exert a unique force.
<h3>
What is Newton's second law?</h3>
Newton's second law of motion states that the force applied to an object is directly proportional to the mass and acceleration of the object.
F = ma
where;
- m is mass of the object
- a is acceleration of the object
Based on Newton's second law of motion, the force exerted by an object increases with increase in the mass of an object.
For example, most defenders in sports usually have large mass which increases the force exert on the opposing team.
Thus, the Newton's second law of motion can be used to determine the why certain players are used certain positions because each player has unique mass and as such exert a unique force.
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Answer:
The current in the motor in this case is 13.2 A
Explanation:
Given:
Resistance 5 Ω
Emf V
Induced emf V
When motor run at half speed due to load increased then induced emf is also reduced to half of its value
So new induced emf in our case is given by,
V
Where
A
Therefore, the current in the motor in this case is 13.2 A
Answer:
if you rub an negative object against a positive object, the negative electrons will go to the positive electrons making the object that was rubbed positive
Explanation:
The power delivered to the coil is 0.5 Watts
<h3>Resistivity of a material</h3>
The formula for calculating the power delivered to it is expressed according to the equation
Power = I²R
where
I is the current
R is the resistance
Given
Current = 0.500A
Determine the resistance using the resistivity formula
R = ρL/A
Substitute the given parameters
R = 10^-6*(25)/0.002²
R = 2ohms
Substitute
Power = I²R
Power = (0.5)²(2)
Power = 0.5watts
Hence the power delivered to the coil is 0.5 Watts
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