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The Royal Swedish Academy of Sciences has announced the 2023 Nobel Prize in Physics jointly awarded to Pierre Agostini, Ferenc Cruz and Anne L'Huillier. He has been given this award for his studies related to Attosecond Pulses of light in matter
A boat travels faster than the stream by 28 km/h. It covers a distance of 112 km upstream and returns 132 km downstream, all within 7 hours. Calculate t...
A man can row at 36 km/hr in still water. In a stream which is flowing at 12 km/hr, it takes him 3 hrs to a place and back. How far is the place?
The speed of a boat in still water is 6 km/hr more than that of the current. The time taken by the boat to cover 825 km downstream is 16.5 hours. Find t...
A boat running downstream covers a distance of 42 km in 6 hrs and covering the same distance upstream in 14 hrs. What is the speed of a boat in still wa...
If the speed of a boat in a still water is 20 km per hour and the speed of current is 5 km per hour then the time taken by the boat to travel 100 KM wit...
A boatman takes 9 hours to cover 64 km downstream and 60 km upstream. If the ratio of his speed downstream to his speed upstream is 4:3, what is the spe...
P and Q can complete a work in 24 days and 36 days, respectively. P, Q and R together can complete the work in 12 days. If R get a total wage of Rs. 612...
A boat can travel 28 km downstream in 30 min. The ratio of the speed of the boat in still water to the speed of the stream is 5: 3. How much time will t...
Two boats X and Y start towards each other from two places, 119 km apart. Speed of the boat X and Y in still water are 7 km/hr and 10 km/hr respectively...
A boat takes half time in moving a certain distance downstream than upstream. The ratio of the speed of the boat in still water and that of the current...
