Question
What is the minimum escape velocity required for a
rocket to leave Earth's gravitational pull?Solution
Escape velocity is the speed necessary to overcome Earth's gravitational force. For Earth, it is approximately 11.2 km/s.
In a school, the average number of books that some numbers of boys have is 80 and average number of books that some numbers of girls have is 50. If each...
In an examination, the average marks obtained by the students is 40. After correcting the quantitative mistakes, the average of 50 students is reduced t...
The average weight of 4 persons is 35 kg. The heaviest person’s weight is 24 kg more than the lightest person’s weight. If the average weight of the...
The average weight of a group of (x - 3) employees is (x + 4) kg. If a manager of weight 54 kg joins the office, then average weight of the group increa...
The average cost of three chairs is Rs.16000. The average cost decrease by 20% when one more chair is included. What is the cost price of the 4th
Average age of a class of 41 students is 17 years. Average age of the class is increased by 18 months if the age of the teacher is included. Find the ag...
A set contains ten numbers. The average of the first six numbers is (x - 4), and the average of the last three numbers is (x + 2). The average of the en...
A gift box has 10 bangles. The average weight of the first 4 bangles is 56gms and the average weight of the remaining 6 bangles is 57 gms. Tell the aver...
The mean of 7 consecutive natural numbers is 68. What is the addition of the minimum and maximum numbers?
Average of four numbers is 18. Sum of smallest and largest number is 32. If difference between other two numbers is 2, then find the square of second sm...
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