The flux through a loop is given by $\phi_{\mathrm{m}}=\left(0.10 t^2-0.40 t\right)$, where $\phi_{\mathrm{m}}$ is in webers and $t$ is in seconds. Draw graphs of magnetic flux and induced emf as a function of time.

A current is induced in a conducting loop that lies in a horizontal plane, and the induced current is clockwise when viewed from above. Which of the following statements could be true? A magnetic field whose magnitude is decreasing is directed vertically downward.

Complete the code for the following for loop:

for (int i = 1; i <= 6; i++) {
    // your code here
}

so that it prints the following numbers, one per line:

−4
14
32
50
68
86

The given graph shows how a solenoid's loops affect its magnetic field strength. Predict the strength of a 12-loop solenoid.

A 300 gauss

B 600 gauss

C 700 gauss

D 1200 gauss

Discuss the following problem. If an RNA molecule could form a hairpin with a symmetric internal loop, as shown, could the complement of this RNA form a similar structure? If so, would there be any regions of the two structures that are identical? Which ones?

A measurement of the open-loop gain of an internally compensated op amp at very low frequencies shows it to be 98 dB; at 100 kHz, this shows it is 40 dB. Estimate values for $A_{0}, f_{b},$ and $f_{t}.$

Match the most related term with the description: Opposes filtration

a. aquaporins

b. ADH

c. aldosterone

d. PCT

e. secretion

f. renal corpuscle

g. nephron loop

h. filtrate

i. BCOP

j. podocytes

Draw the circuit diagram of the basic inverting amplifier configuration. Give an expression for the closed-loop voltage gain of the circuit in terms of the resistances, assuming an ideal op amp. Give expressions for the input impedance and output impedance of the circuit.

In a program you need to store the populations of 12 countries.

a. Define two arrays that may be used in parallel to store the names of the countries and their populations.

b. Write a loop that uses these arrays to print each country’s name and its population.

Match the most related term with the description: Counter current multiplication

a. aquaporins

b. ADH

c. aldosterone

d. PCT

e. secretion

f. renal corpuscle

g. nephron loop

h. filtrate

i. BCOP

j. podocytes

Match the most related term with the description: Site of plasma filtration

a. aquaporins

b. ADH

c. aldosterone

d. PCT

e. secretion

f. renal corpuscle

g. nephron loop

h. filtrate

i. BCOP

j. podocytes

A current is induced in a conducting loop that lies in a horizontal plane, and the induced current is clockwise when viewed from above. Which of the following statements could be true? A magnetic field whose magnitude is increasing is directed vertically downward.

Match the most related term with the description: Glomerular epithelium

a. aquaporins

b. ADH

c. aldosterone

d. PCT

e. secretion

f. renal corpuscle

g. nephron loop

h. filtrate

i. BCOP

j. podocytes

Identify each of the following examples as a negative or positive feedback loop: (a) Alarm leading to panic: _____ (b) Temperature regulation: _____ (c) Hormonal changes during childbirth: _____ (d) x = (x + 1): _____ (e) Predator prey oscillation: _____ (f) Exponential population growth: _____