In mammals, the weight of the heart is approximately 0.5% of the total body weight. Write a linear model that gives the heart we
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For the xsectional area it's pi r squared. The other formula is for the volume of a cylinder. Which is what the wire is, a long cylinder. I can't remember the resistivity formula to hand,
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pi x r^2 is the formula for the cross sectional area of the wire.the other formula is for the volume of a cylinder. Though I can't remember the formula for resistivity off my noggin, the wire is, effectively, a long cylinder isn't it ???
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pi x r^2 is the formula for the cross sectional area of the wire.the other formula is for the volume of a cylinder. Though I can't remember the formula for resistivity off my noggin, the wire is, effectively, a long cylinder isn't it ???
Answer:
Tension= 475N
Force= 225N
Explanation:
The question is not complete, here is the complete question
Also, see attached a free body diagram for your reference
<em>"A 20.0-kg uniform plank is supported by the floor at one end by a vertical rope at the other as shown in the figure. A 50.0-kg mass person stands on the plank a distance three-fourths of the length plank from the end on the floor. </em>
<em>a. What is the tension in the rope? </em>
<em>b. What is the magnitude of the force that the floor exerts on the plank?"</em>
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given data
mass of man=50kg
mass of plank=20kg
length of plank=10m
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let us make the lenght of the rope be d
The torque about the floor
That is taking moment about the floor
Force will be also zero
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Answer:
Directly proportional
Explanation:
Ohm's law states that the electric current is directly proportional to the voltage between two points. Its mathematical form is given by :
R is resistance
In a circuit, voltage and current are directly proportional to each other. So, the correct option is (a) "directly proportional".