Answer:
The work done is 120000 J.
Explanation:
Given that,
Weight = 600 N
Distance = 200 m
We need to calculate the work done
Using formula of work done

Where, F = force
d = distance
Put the value into the formula


Hence, The work done is 120000 J.
three types
The three types of thermal expansions are Linear expansion , Superficial expansion and Cubical expansion.
Answer:

Explanation:
Length of the conveyor belt is given as

time taken to cook one burger is given as

now we can find the speed of the belt as



Now we know that the distance between two burgers is given as 25 cm

now the production rate of burgers is given as





#10 when you added the oil to the water they did not mix together. Instead the oil created a layer on the surface of the water. This is because oil is less dense than water and so it floats
Answer: buzzer.
The working principle of a buzzer is the conversion of electrical energy to sound energy.
The switch just cuts or permits the flow of current, the motor convertes electrical or other kind of energy into mechanical energy, a bulb converts electrical energy into light and a battery converts chemical energy into electrical energy.