A major function of the price mechanism is that it determines the
Allocation of resources
Amount of national savings
Population of the country
Number of goods to be taxed
Correct answer is A
The price mechanism is a mechanism where price plays a key role in directing the activities of producers, consumers, resource suppliers. It aids in resource allocation, as both the buyer and seller can decide on what product to produce and what to buy.
Which of the following equations for the efficiency of a machine is correct?
Efficiency = \(\frac{\text{Velocity Ratio}}{\text{Mechanical Advantage}}\) x 100%
Efficiency = \(\frac{input}{output}\) x 100%
Efficiency = \(\frac{\text{load distance}}{\text{effort distance}}\) x 100%
Efficiency = \(\frac{\text{Mechanical Advantage}}{\text{Velocity Ratio}}\) x 100%
Correct answer is D
No explanation has been provided for this answer.
0.8m
4.0m
4.8m
5.6m
Correct answer is C
h = \(\frac{PE}{mg} - \frac{12}{0.25 \times 10} = 4.8m\)
Which of the following devices convert heat energy to electrical energy?
transformer
dynamo
thermocouple
thermostat
Correct answer is C
No explanation has been provided for this answer.
kinetic energy is increasing
potential energy is increasing
potential energy is decreasing
kinetic energy remains constant
Correct answer is B
The Kinetic Energy of a body is energy possessed by a body as a result of its motion. Hence, while in motion the kinetic energy of a body changes into potential energy as it rebounds from the floor