Answer:
Produces heat in various parts of machines.
Due to friction we have to exert more power in machines.
It opposes the motion.
Due to friction, noise is also produced in machines.
Due to friction, engines of automobiles consume more fuel which is a money loss.
Explanation:
Source: https://www.quora.com/What-are-the-disadvantages-of-friction
Answer:
2.Scientists discovered new evidence to support their theories.
3.Scientists discovered that old interpretations of data was incorrect.
4.Scientists used observations and mathematical data to solve problems in new ways.
Explanation: Here you go
A major obstacle to developing a good human relations skill is that : few person have a common interest a communication between two people will be a lot easier if they have common interest because a person tend to like other person that are similar to him (whether it's race, background , or common interest).
Answer:
power will three times decrease (one-third)
Explanation:
P = W / t
thus when work is constant, power is inversely proportional to time
so, when time is tripled, power is decreased to one-third