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Let the speed of the boat in still water = 35x km/hr And the speed of the current = 6x km/hr Time = 5 hours 10 minutes = 31/6 hrs Downstream speed = 35 + 6 = 41 km/hr Upstream speed = 35x - 6x = 29x km/hr Distance = Downstream speed x Downstream time Distance = [41x x (31x/6)] km Upstream time = Distance / Upstream speed Upstream time = [41x x (31x/6)]/29x = 1271/174 = 7(1/2) hrs
Which one of the following is called a red planet?
Which of the following is not a vector quantity?
Which property of a wave is related to its frequency?
In order to investigate the internal atomic structure of crystals, we make use of:
Let the electric field part of an electromagnetic wave is E = {(2.3 N/C) cos [(1.2 rad/m) y + (2.4 × 108 rad/s)t]} î.
Compute the...
An object of mass ‘m’ be made to fall freely from a height ‘h’. At the start the potential energy is _____ and kinetic energy is ______.
...The diameter of a capillary is 4mm. If Reynolds's number of the tube is 1000 and the co-efficient of viscosity for water is 0.02 poise, determine the m...
In Newton’s law of cooling, the rate of temperature fall is proportional to:
A nucleus with mass number A and atomic number Z undergoes β⁻ decay. Which of the following is correct about the daughter nucleus?
A new technology which provides the ability to create an artificial world and have people interact with it is called –
