Let the capacity of tank L.C.M. (15, 10, 20) = 60 units Efficiency of pipe P1 = 60/15 = 4 units/hour Efficiency of pipe P2 = 60/10 = 6 units/hour Efficiency of pipe P3 = 60/20 = 3 4 units/hour Tank filled by all the three in three hours = 13 × 3 = 39 units Remaining tank filled by pipe P3 = (60−39)/3 = 7 hours Total time = 3 + 7 = 10 hours
Identify the gas that is not considered a permanent part of the Earth's atmosphere.
The force responsible for the moon's orbit around the Earth is:
What element is primarily used in a Proton Fusion Engine?
Consider the following statements about Project Kuiper:
1. Amazon recently signed an agreement with NASA to support this Project.
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At what angle is a pendulum's equilibrium position defined?
Which principle allows chalk to write on a blackboard?
A satellite is used for
Which set of the following gases is most important for greenhouse effect?
The vector of malaria is:
At ________ the centigrade and Fahrenheit scales are equal.
