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ir Q. No. la ताल भनका क
The unit of density is called derived unit, why?​

Rank the torques on the five doors shown in the figure above from least to greatest. note that the magnitude of all the forces is the same

The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. assume that the membrane acts like a parallel plate capacitor in which the effective charge density on the inner and outer walls has a magnitude of 7.0 × 10-6 c/m2. (a) what is the magnitude of the electric field within the cell membrane? (b) find the magnitude of the electric force that would be exerted on a potassium ion (k+; charge = +e) placed inside the membrane.

How does an observation about an object differ from an inference about that object