Question
Train 'A' travels at a speed of 54 km/hr and passes a
stationary pole in 12.4 seconds. How long will it take for Train 'A' to completely pass Train 'B', given that Train 'B' is 48 meters longer than Train 'A' and is traveling at a speed that is one-third faster than Train 'A'? Both trains are moving in opposite directions.Solution
Speed of train ‘A’ = 54 × (5/18) = 15 m/sec Therefore, length of train ‘A’ = 15 × 12.4 = 186 metres Length of train ‘B’ = 186 + 48 = 234 metres Speed of train ‘B’ = 15 + (15/3) = 20 m/sec Required time taken = (234 + 186)/(15 + 20) = 12 seconds
Which of the following is an example of an independent variable in a data analysis model that predicts employee productivity based on training hours?
In the context of data analysis, which of the following best describes trend analysis?
In a structured database, which data storage format would best support hierarchical data with varying levels of nested attributes?
What is the primary difference between recursion and iteration in programming?
Which of the following is the most important reason for calculating the sample size correctly in data analysis?
Which of the following best describes the main purpose of Exploratory Data Analysis (EDA) in data analysis?
In hypothesis testing, what does a low p-value (e.g., p < 0.05) suggest about the null hypothesis?
What is the first step in the data analysis process?
Which of the following best describes the seasonal component in time series data?
Why is metadata critical for managing large datasets?
Relevant for Exams:
