4200J
1600J
24000J
96000J
Correct answer is D
Q = I2RT
= 42 x 50 x 2 x 60
= 96000J
Which of the following will not retard economic development in West Africa?
Dependence on imports
Population control
High level of illiteracy
Low level of savings
Correct answer is B
Population growth directly triggers higher demand for provision of various aspects of human existence including food, healthcare, housing, jobs, infrastructure, access to resources and many other issues. With Population control, resources can be fairly and equitably distributed to individuals.
105J
3255J
3465J
16821J
Correct answer is C
Q = ML + MC\(\theta\)
= 10 x 335 + 10 x 2.1 x 5
= 3465J
An excise tax is imposed on goods
Smuggled into the country
Manufactured locally
Imported into the country
Seized by custom officials
Correct answer is B
Excise taxes are internal taxes that are levied on the sale of specific goods and services, such as alcohol, fuel and tobacco. These goods are goods that are manufactured in the country. It is an indirect tax that is not paid by the customers directly instead, the excise tax is imposed on the supplier or the producer, who then includes it in the product price.
The volume of a given mass of gas at 27oC and 800 mmHg is 76cm2. Calculate its volume at s.t.p
100.0 cm3
72.8 cm3
60.0 cm3
36.4 cm3
Correct answer is B
\(V_2 = \frac{P_1V_1T_2}{P_2T_1} = \frac{800 \times 76 \times 273}{760 \times 300}\)
= 72.8cm3