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what was changed and why in the "elasticity" lab?

temperature to see how it affected stretch length of a rubber band

rubber band length to see how it affected mass

mass to see if you could break a rubber band

mass to see how it affected stretch length of a rubber band

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.

If the ama of the inclined plane below is 2, calculate the ima and efficiency. ima = efficiency =

An object weigh 40n in air ,weigh 20n when submerged in water,and 30n when submerged in a liquid of unknown liquid density.what is the density of unknown of liquid?