Subject: Mathematics
Book: Maths Mastery
Scientific notation expresses very large or very small numbers in the form m × 10^n, where 1 ≤ m < 10 and n is an integer. For example, the speed of light (~300,000,000 m/s) becomes 3.0 × 10^8 m/s, and a cell’s diameter might be 2.5 × 10^–5 m. To convert a number into scientific notation, move the decimal point until only one nonzero digit appears to its left, counting the moves to determine the exponent sign and magnitude. This is widely used in physics, astronomy, and chemistry to handle extremes in scale. Proficiency with scientific notation is crucial in data science, engineering, and daily tasks like reading a phone’s internal storage capacity or analyzing financial statements.
A train 120 meters long is moving at a speed of 54 km/h. How long will it take to pass a pole?
View QuestionIf sin(θ) = 0.6 and θ is acute, what is cos(θ)?
View QuestionThe simple interest on Rs. 4000 at 5% per annum for 2 years is:
View QuestionIf the sum of three consecutive integers is 72, what are the integers?
View QuestionA cube has a side length of 4 cm. What is its volume?
View QuestionA rectangle has an area of 48 cm² and a length of 8 cm. What is its width?
View QuestionIf a+b = 10 and ab = 21, what is the value of (a-b)^2?
View QuestionWhat is the square root of 121?
View QuestionA car travels 240 km in 4 hours. What is its average speed?
View QuestionIf the sum of the squares of two consecutive positive integers is 365, what are the integers?
View Question