Aluminum wire has diameter of 3 mm. How many meters of this wire would be  needed to give resistance 2 Ω if the resistivity of aluminum is 2.8 × 10−8Ω. ?.

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Q: 2. Two objects of masses 10 and 20 kg are thrown from the top of a tall building. The more massive…

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Q: kicked into the air at an angle of 45 degrees with the horizontal.

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A: Given data as per question mass  =  73kg h  =  0.5m x   =  0.08m

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Temperature Variance of Resistance

Electrical resistance or simply resistance is the property of a material that opposes the free flow of electrons through it. The total amount of resistance to the flow of charges (or current) is affected by many factors like the length of the conducting material, its cross-sectional area, resistivity, and temperature.