Translate "what's your name?" to hindi
तुम्हारा नाम क्या है?
If 3 men complete work in 7 days how many days will 5 men take?
Total amount of work = 3*7 = 21 man-days We now have 5 men available to us. Number of days required by these men to finish the work = 21/5 = 4.2 days
When a stone is rolled down a slope, what are the energy conversions taking place?
At a height, the stone has potential energy by virtue of its position. When it rolls down, the potential energy gets converted into kinetic energy