Four types of maintenance concept are corrective, preventive, risk- based and condition- based maintenance.
<u>Explanation:</u>
In corrective maintenance repair activities are carried out when a fault or slight defect is detected. This carried out by considering that the cost of repair will be lower than the expenses incurred when continuous maintenance approach is chosen.
In preventive maintenance approach , maintenance is carried out in definite intervals so as to reduced the risk of failure.
Risk based maintenance is carried out by integrating appropriate analysis and periodic test activities to the preventive maintenance approach. In condition bases maintenance the equipment performance is monitored and the corrective actions are controlled.
Prior to the arrival of the first Europeans in North America, millions of Native Americans lived in scattered and diverse settlements across the continent. By 1492, at least 375 distinct languages were spoken and societies were structured in many ways. False. SOME tribes were nomadic while others were more permanent
Answer:
The gravitational force between a mass and the Earth is the object's weight.
Explanation:
Mass is considered a measure of an object's inertia, and its weight is the force exerted on the object in a gravitational field. On the surface of the Earth, the two forces are related by the acceleration due to gravity: Fg = mg.
