The distance travelled by the train in 16min 30 seconds will be equal to that travelled by sound (20 min – 16 min 30 sec) = 3 min 30 seconds The train travelled 330 × 210 meters in 16 1/2 minutes. ∴ Speed of the train per hour = (330 × 210 × 2 × 60)/(33 ×1000) = 252 km/hr ALTERNATE METHOD: Let speed of train = x m/s The distance covered by bullet with a speed of sound 330m/s in 20 minutes is equal to distance covered by train & bullet together in 16 min 30 sec So let speed of train = x m/s So 330 × 20 = (x+330) × 16 ×1/2 6600 × 2/33 = x + 330 So x + 330 = 400 Or x = 70 m/s = 70 × 18/5 kmph = 252kmph
FIRB method of planting is followed in which crop?
The IFOAM is the worldwide umbrella organization for the organic agriculture movement, which represents close to 800 affiliates in 117 countries. What d...
Harvest index of 19% (lowest among pulses) is observed in which crop?
Bench terracing is practiced in steep hill slopes where slope is:
Global Positioning System helps farmers in which of  the following taskÂ
Growing of erosion permitting and erosion resisting crops in alternate strips is known as.
The weeds whose seed is difficult to separate from crop seed after contamination is called ___
Match the following
1. Rhizobium trifoli                                                    Â...
The Punjab Agricultural University (PAU) has developed a new variety of wheat to keep obesity and diabetes in check. The variety is ____
Which of the following crop is highly tolerant to alkalinity?
