Question
Which of the following statements is/are correct about
friction? A. Friction can be entirely eliminated on any surface. B. Rolling reduces friction. C. Sliding friction is smaller than the rolling friction. Choose the correct answer from the codes given below:Solution
Friction can be reduced but it can never be eliminated completely. In rolling friction, the surface contact is less which results in less friction. Rolling friction is less than the sliding friction
The ratio of the outer and the inner circumference of a circular path is 5: 4. If the path is 100 meters wide, then what is the radius of the inner circle?
If tanx+secx=3, then the number of real solutions in [0,3Ο] is:
{β676.12 + 13.012 β 146.89 } = ?
If sinβ΄ x + cosβ΄ x = 5/8, then the value of sin2x is
In an exam Dinesh scored 362 marks and Shivam got 68 % marks in the same exam which is 12 marks more than Dinesh. If the minimum passing marks in the ex...
Find the simple interest on Rs 1040 at 12% per annum for 2 years?Β
The following table shows the number of students enrolled in different courses at a university:
The ages of P, Q, and R are in the ratio 2:3:5. After 5 years, the sum of their ages will be 75 years. What are their present ages?
f(x)=x+ β£ x β£ , then the function is:
