Question
A train covers a distance of 84 km at the speed of 42
km/h the next 45 km distance covers with a speed of 30 km/h and last 60 km with the speed of 40 km/h find the average speed of the train?Solution
Since the train covers different distance with different speeds. So, Average speed = Total Distance/Total Time Total distance = 84 + 45 + 60 = 189 km Time1 = 84/42, Time2 = 45/30 & Time3 = 60/40 Total Time = 84/42 + 45/30 + 60/40 Therefore, Average Speed = 189/(84/42 + 45/30 + 60/40) = 37.8 km/hr
In 16-bit 2’s complement representation, the decimal number -28 is
What is the purpose of the Program Counter (PC) in CPU control design?
What is the main objective of cluster analysis in data analytics?
Specific class of computer software that provides the low-level control for adevices specific hardware
Write a query to fetch department-wise count of employees sorted by department’s count in ascending order. EmployeeInfo is the table name.
...What type of programming language is Python?
What is the purpose of a Storage Area Network (SAN)?
In an RC circuit, what happens to the charging time constant (Ï„) if the resistance (R) is increased?
In a uniform distribution over the interval [a, b], what is the probability density function (PDF)?
State true/false
A SQL query will not work if there are no indexes on the relations
Relevant for Exams:
