Doors of a dam are 20m below the surface of water in the dam. If one door is opened what will be the speed of the water that flows out of the door ?
The given can be listed as, h= 20m g = 9.8m/s² To find, v = ? Solution -��…
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A cyclist moved at a speed of xkm/hr for 2 hours. He then increased his speed by 2 km/hr for the next 3 hours. If the total distance covered is 36km, what is his initial speed,?
The distance covered in 2hr with the speed of x km/hr is, = 2x km now the speed is …
The distance between two places A and B is 60 Km. Two cars at the same time start moving from two ends with the speed of 35 km/h and 25 km/h respectively. If both cars are moving towards each other, then after what time they will meet?
Since we know that the distance b etween A and B is 60 km also Speed of car A = 35 k…
A car is moving on a straight road covers one third of the total distance at 20km/h, and the rest at 60km/h. What is its average speed?
To solve such sums let us assume some quantities first . L et the total distance cove…
Calculate the viscous force acting on a rain drop of diameter 1 mm, falling with a uniform velocity 2 m/s through air. The coefficient of viscosity of air is 1.8 × 10^-5 Ns/m².
As per the question we can list some data as, diameter d = 1mm velocity v…
A light bulb is rated 100W for 220 V AC supply of 50 Hz. Calculate (a) resistance of the bulb. (b) the rms current through the bulb.
the given can be listed as Power P = 100W To Find , Resistance R = ? …