Answer:
A. 46.15 ohms
B. 1248 W
C. 2.25×10⁶ J
Explanation:
A. Determination of the resistance.
Current (I) = 5.2 A
Voltage (V) = 240 V
Resistance (R) =?
From ohm's law,
V = IR
240 = 5.2 × R
Divide both side by 5.2
R = 240 / 5.2
R = 46.15 ohms
B. Determination of the power.
Current (I) = 5.2 A
Voltage (V) = 240 V
Power (P) =?
P = IV
P = 240 × 5.2
P = 1248 W
C. Determination of the energy.
Power (P) = 1248 W
Time (t) = 30 minutes
Energy (E) =?
Next, we shall convert 30 minutes to seconds. This can be obtained as follow:
1 min = 60 s
Therefore,
30 min = 30 min × 60 s / 1 min
30 min = 1800 s
Finally, we shall determine the energy. This can be obtained as illustrated below:
Power (P) = 1248 W
Time (t) = 1800 s
Energy (E) =?
E = Pt
E = 1248 × 1800
E = 2.25×10⁶ J
There is a direct relationship between the kinetic energy and the temperature of a certain body which is expressed in the given equation below,
KE = 3kT/2
where KE is kinetic energy, k is proportionality constant, and T is the temperature in kelvin. Thus, increasin the temperature of a body, increases its average kinetic energy. The answer is letter A.
For number 3, I believe it is B, as people subconsciously get the name Levi's into their head. When people say I want to go to Levi's stadium for a game, they connect it with good thoughts, and next time they want to get jeans they might think, what jean brand do I know, and think of Levi's.
For number 4, I believe it is D. A is untrue, and B and C have nothing to do with the exchange of information between consumers.
For number 5, it is C, Monopoly. Monopolies are when 1 company is the only one who sells a particular good or service. There are some monopolies, but most of them are by federal agencies and consumers most likely do not want to choose for those services.
For number 6, I believe it is A, right to consumer education. I originally thought it might be B, however, when I looked up B, there was no such law, and what came up is the right to consumer education. I am not 100% sure on this one, but your best bet is A I think.
Hope this helps!