Question
In a school with 800 students, the average of the age of
the boys is 16 years and that of the girls is 12 years. If the average age of the school is 14 years 9 months. Then the number of girls in the school is.Solution
A person weighing 80 kg is standing in an elevator that is accelerating downward at 3 m/s². What is the apparent weight? (Take g = 10 m/ s²)
Which law explains the relationship between force, mass, and acceleration?
What is the normal body temperature of a human being?
What are the elements which are liquids at room temperature and standard pressure?
 1. Helium
2. Mercury
3. Chlorine
4. Bro...
Cathode rays when obstructed by metal cause emission of -
Speed of light will be maximum in which of the following mediums?Â
A projectile is fired at an angle of 45° with a speed of 20 m/s. What is the maximum height reached? (Take g = 10 m/ s² )
Which of the following gas usually causes explosions in coal-mines?
What is the ph of blood?
The PH of an aqueous solution of a salt is 4.5. Which of the following about this salt is true?
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