Answer:
No, it's not there.
Explanation:
For a machine to be 100% efficient, it has to be with an output which is equal to its input. But machines have an out put less than an input, hence efficiency below 100%.
Answer:
Option D is the correct answer.
Explanation:
Stress is the force per unit area that tend to change the shape of body.
Stress is defined as internal resistive force per unit area.


So, so stress distributed over an area is best described as internal resistive force.
Option D is the correct answer.
Friction between the ball and the floor is stealing some of the kinetic energy of the ball, and turning it into heat.
They live half their lives in water and most of their life on land
Answer:
I believe it's True! Brainliest??
Explanation: Hope you have a great day :)