Answer:
D. 539,000 J
Explanation:
The formula for potential energy(P.E) =mgh where m is mass of object, g is gravity acceleration 9.8 m/s² and h is height in meters.
From the question ;
m=500 kg
g= 9.8 m/s²
h= 110 m
P.E = mgh
= 500*9.8*110
=539,000 J
Answer option D
The other options are incorrect because the calculated values for the potential energy of the train are not equal to 539,000 J.
Explanation:
The sum of the length of RS and ST is the length of RT, i.e.
Answer:
C.) Weight and distance I believe
Explanation:
Answer:
A battery changes chemical energy to <u>electrical</u> energy
A drum changes mechanical energy to <u>sound</u> energy
Explanation:
A battery is a device that stores chemical energy and converts it to electrical energy.
Beating a drum represents a mechanical to sound energy conversion.
Answer:
Both technicians are correct.
Explanation:
a. The rate of combustion of diesel as a fuel by diesel engines is lower compared to a gasoline engine. So if the two types of engine are operated with the same litre of fuel and for the same period, the gasoline engine would consume more fuel. Thus, a diesel engine would consume less fuel per mile than a gasoline engine.
b. Diesel engines are more powerful engine compared to a gasoline engine. They are used where a great amount of force is required. So that compared to a gasoline engine of the same size, a diesel engine would provide more torque.
Therefore, the two technicians are correct as regards their statements.