Which statements describe scientific laws but not theories or hypotheses? check all that apply.

they are likely to change as new evidence is discovered.
they do not provide explanations for why they are true.
they are considered to be proven facts.
they have not yet been tested.
they are the bases for experiments instead of the results.

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.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Could someone me find the answer to this problem.