Question
Two trains of same length are running in parallel tracks
in the same direction with speed 70 km/hr and 120 km/hr respectively. The latter completely crosses the former in 36 seconds. Find the length of each train (in m).Solution
When two trains cross each other, they cover distance equal to the sum of their lengths with relative speed. Let's take length of each train = x So, total length of both trains = 2x Relative speed = (120 – 70) × (5/18) = 125/9 m/sec. ∴ Total length = Time × Relative speed ⇒ 2x = (36 × 125)/9 ⇒ x = 250 m
What is the smallest and largest font size available in Font Size tool on formatting toolbar?
Which PowerPoint feature adds special effects to modify the appearance of the slides and the timing between each slide?
A set of possible data values is called
The term "Zipping" a file encompasses:
What is the name for an application that changes a human-readable programming language into a machine-readable language?
First web browser is
Fourth generation of computer system is based on ?
A function encapsulated within another function is termed:
What is the name of an application program that gathers user information and sends it to someone through the internet?
The process of transferring files from a computer on the Internet to your computer is called
Relevant for Exams:
