Question
A train takes 25 seconds more to
cross a 750 metres long platform than it does to cross a 350 metres long bridge. If the time taken by the train to cross a tree is 18 seconds, find the speed of the train.Solution
ATQ,
Let the length of the train be 'x' metres. Let the speed of the train be 'y' m/s. According to the question: 
Therefore, the speed of the train is 16 m/s.
Which of the following is an example of symbiosis?
What is the product of the reaction?
CH₃COOH + CH₃OH → (H⁺, heat)
In a nuclear reactor, one of the following is used as a fuel.
1 mole of carbon atoms = ______ g of carbon atoms
Two capacitors of capacitance 6 µF and 3 µF are connected in series across a battery of constant voltage.
The charges stored on the two capaci...
Group number and valency have no relation in
In Bohr’s model of the hydrogen atom, electrons in “stationary” orbits do not emit radiation continuously because:
The primary reason that smoking cigarettes is bad for our health is that cigarette smoke _______.
Chemical equation is balanced according to the law of
Consider the following statements regarding antibiotics
1. They are used to destroy disease-causing bacteria.
2. They can be applied to th...
Relevant for Exams:
