Question
Maths
Jan. 30, 2020, 7:37 p.m.
Answer
two children are at opposite end of an aluminium rod.one strikes the end of the rod.find the ratio of times taken by sound wave in air in aluminium to reach the second child.(given: speed of sound in air=346m/s; speed of sound in aluminium=6420m/s).
The output frequency of wind turbine is 50 Hz. What is meant by this statement ?
Maths
Jan. 30, 2020, 1:16 p.m.
Answer
a dice is thrown 5 times a random find the probability that any one definite number come 4 times of upward and anyone different number comes at least 4 times a upward