Question
The tops of two electric poles are tied with strings to
a same point on the ground. If both the strings are 100 m long and are inclined at an angle of 45º and 60º, respectively, to the ground, then find the difference in the heights of the two poles (in m).Solution
The correct answer is A
Addition of ethylene dibromide to petrol
What is the process of changing a substance directly from solid to gas called ?
A nucleus X of mass number 238 undergoes 3 α-decays and 2 β⁻-decays successively. The mass number and atomic number of the resulting nucleus Y are:...
A fluid flows through a horizontal pipe. The pressure drops by 2000 Pa and speed increases from 2 m/s to 4 m/s. Find density.
What is the smallest unit of the kidney called?
Which period and group in the long form of periodic table contain maximum number of elements?
Galvanisation is the process of depositing a layer of ________ on iron.
You will see that the atomic radius decreases in moving from left to right along a period in the Periodic Table. The reason for this is-
Which planet is known as the Red Planet?
Which muscle type is involuntary and found in internal organs?
