Correct Answer: D. the manufacturing industry

Explanation

The term may refer to a range of human activity, from handicraft to high tech, but is most commonly applied to industrial design, in which raw materials are transformed into finished goods on a large scale. Such finished goods may be sold to other manufacturers for the production of other, more complex products, such as aircraft, household appliances, furniture, sports equipment or automobiles, or sold to wholesalers, who in turn sell them to retailers, who then sell them to end users and consumers.

Correct Answer: D. an egocentric old man

Explanation

(a) interests = \(\frac{25000 *3 * 21}{100}\)

= $ 15750.00

amount paid = 225000 + 15750

= $40,750.00

amounts paid by year = 40750.00 / 2

= $ 20375.00

(b) let's be consecutive numbers be X and X + 1

3X + 2(X + 1) = 17

3X + 2X + 2 = 17

5x = 15

x = 3

some of the numbers = 3 + 4 = 7

Percentage = \(\frac{3}{7}\) * 100

= 42.857 or 42.9%

Correct Answer: D. Murtadd

Correct Answer: A. Addition of fixed cost to variable cost

Explanation

(a) Whenever there is a change in the magnetic flux linked with a circuit, an electromotive force is induced, (1\(\frac{1}{2}\)) the strength of which is proportional to the rate of change of the flux linked with the circuit (1\(\frac{1}{2}\)).

E \(\alpha\) \(\frac{d \theta}{dt} or E = \frac{Nd \theta}{dt}\)

Where E = induced e.m.f.

\(\theta\) = magnetic flux.

(b)

Workability: All except key and capacitor. When the platinum contacts touch ar,d the key k is closed, current passes through the primary coil and the core is magnetised. The soft iron armature is then attracted so the, the platinum contacts separate and the circuit is broken. When this happens, the core loses its magnetism and the armature is pulled back by the spring so that contact is re-established. As the contact is repeatedly made and broken in the primary circuit, changes of magnetic flux take place and induces an e.m.f. in the secondary coil. Because of the much larger number of turns in the secondary compared with the primary, a very high e.m.f is induced in the secondary coil which is sufficient to cause a spark to jump across the spark gap.

(c) The core of the coil is made of bundle of soft-iron wires OR that are of the coil is laminated. Or use of particle of iron dust. Or lamination of iron sheet or iron core not metallic sheet

(d) – To control sparking at the platinum contacts (which otherwise wears off the contact points)

-- It promotes a rapid decay of the magnetic flux at the break of the primary circuit and this helps to increase the secondary e.m.f.

(e) It is used in the

– coil

– ignition system of motor cars

– inveitigation of high voltages

– study of electric discharge through gases

– operation of x-ray tubes

– merse radio transmitter.

Correct Answer: C. Species

Correct Answer: C. concentration of firms of an industry

Explanation

Localization of industries is also called the geographical or territorial division of labour. This means that certain areas or towns come to specialise in the production of certain commodities. It simply means the concentration of firms of an industry in a particular area.

Correct Answer: D. -22

Explanation

Taking the LCM of the right hand side of the equation, we have

\(\frac{4(2x-3) - 2(x+5)}{(x+5)(2x-3)} = \frac{6x+m}{2x^{2}+7x-15}\)

Comparing the numerators, we have

\(4(2x-3) - 2(x+5) = 6x+m\)

\(8x-12-2x-10 = 6x -22 = 6x + m\)

\(\implies m = -22\)

Correct Answer: C. Lysosome