Question
The average speed of a car over the first 4 hours is 50
km/h. If the car needs to maintain an average speed of 60 km/h over a total of 8 hours, what should be its average speed for the remaining hours?Solution
ATQ,
Total distance required = 60 × 8 = 480 km
Distance covered in 4 hours = 50 × 4 = 200 km
Required distance = 480 - 200 = 280 km
Required average speed in remaining hours = 280 ÷ 4 = 70 km/h
Which of the following types of coal is called a brown coal among the following?
Kindly Study the following questions carefully and choose the right answer.
Human saliva contains an enzyme called salivary amylase that breaks...
Which type of glass is used for making chemical apparatus like beakers, flasks etc.?
The seed multiplication ratio of rapeseed, red gram, hybrid maize, sorghum and jute is:
The pores on the surface of leaves which help to take in the carbon dioxide are known as which of the
following?
Deficiency of _________ causes the leaves to develop a dark green colouration.
The SI unit of angular momentum is equivalent to which of the following?
In half-wave rectifier, what is the output frequency if the input frequency is 40 Hz. What is the output frequency of a full-wave rectifier for the same...
What is the percentage of nitrogen present in farm yard manure (FYM) in general?
The dimensions of angular momentum are:
