Answer:
1. Groove describes the gap in the outer crust of rubber in a tire.
Advantage: It helps water and air to be expelled from beneath the tire.
Disadvantage: Regrooving is dangerous as it makes more grooves to worn out tires which may dysfunction during driving.
2. Cuff is tire scalloping in which treads move from high to low.
Advantage : It reduces fuel consumption due to less friction and resistance.
Disadvantage: There can be lack of contact of tire with the rod surface and therefore bouncy feel can be irritating for the travelers.
3. lugs: Lug nuts are fasteners which attach a tire from the automobile.
Advantages: Lug nut patterns helps maintain good braking power.
Disadvantages: There can be tendency of high noise when car is driven at high speed.
Answer:
The value of ∠QPR is 40°.
a drop of water may spend over 3,000 years in the ocean before moving on to another part of the water cycle
Answer:
he Earth zips around the Sun at about 67,000 miles per hour, making a full revolution in about 365 days – one year on Earth. Mars is a little slower, and farther from the sun, so a full circuit takes 687 Earth days – or one Mars year.
Explanation:
I really do not understand this but i hope you find it
