Compare the expressions for the energy stored in an inductor and the energy stored in a capacitor. Select the choices that explain the similarities indicated by the two expressions.

a. Calculating the energy stored in each device involves multiplying by a factor of 1/2.
b. The expressions are equivalent because LC= Δt^2
c. The proportionality constant used in each expression is determined by the physical properties of the circuit element.
d. The energy stored in each device is directly proportional to the square of a quantity involving charge.
e. The energy stored in each device is directly proportional to a quantity related to current.
f. Each device stores an amount of energy that is inversely proportional to the physical dimensions of each device.

answer: at 24 february, 2014 the population gets twice of its initial population.

explanation:

since we have given that

the population for alpha city, t years after january 1, 2004 is given as

first we find out the initial population, i.e. t=0,

so, our quadratic equation becomes,

according to question, we have said that if the population has twice its initial population, then it becomes

so, time taken to reach this above mentioned population is given by

now, we know that time can't be negative so, we take t=9.149 years.

hence, at 24 february, 2014 the population gets twice of its initial population.

friction

explanation:

they us to move forward and backwards

96.77 amp

explanation:

rl = 250/100 = 2.5 ohms.

egl = 250 + (100 × 0.1) + 2 = 262 v.

at 700 r.p.m., eg2 = 262 × 700/1000 = 183.4 v.

if ia is the new current, then eg2 - 2 - (ia × 0.1) = 2.5 ia

which means this will give ia = 96.77 amp.