What is the term for the safe level of harvest that reduces risk of accidentally causing a population decline?

Lipophobic chemical messengers require receptors to be present in target cells in the ______________.  The binding of this type of messenger to its receptor induce a__________________ to the receptor causing _________________ in the case of tyrosine kinase or _______________in the case of a Na+/K+ channel.

An ideal parallel-plate capacitor consists of a set of two parallel plates of area A separated by a very small distance d. When this capacitor is connected to a battery that maintains a constant potential difference between the plates, the energy stored in the capacitor is U0. If the separation between the plates is doubled, how much energy is stored in the capacitor?

A charge of 2.00 μC flows onto the plates of a capacitor when it is connected to a 12.0-V potential source. What is the minimum amount of work that must be done in charging this capacitor?

An electron is initially moving to the right when it enters a uniform electric field directed upwards. Which trajectory shown below will the electron follow?

Electric field of multiple point-charges: Three equal negative point charges are placed at three of the corners of a square of side d as shown in the figure. Which of the arrows represents the direction of the net electric field at the center of the square?

Each plate of a parallel-plate air-filled capacitor has an area of 0.0020 m2, and the separation of the plates is An electric field of is present between the plates. What is the surface charge density on the plates? (ε0 = 8.85 × 10-12 C2/N • m2)

Unlike for 1st order filters,  pass-band gain K, quality factor Q, and cutoff frequency can be independantly adjusted for 2nd order active LPFs and HPFs that were used in lab.

Give the Quality Factor (Q) of this second-order filter. Round your answer to the nearest 0.1.   

The following schematic shows an active first-order high pass filter.