Which of the following number is in the scientific notation?
Which of the following is/are correct?
i.1 km=103 m
ii.1 km=105 cm
iii.1 km=107 mm
Scientific notation of 156,600,000,000 m is given as
A wireless signal is sent to earth from a spacecraft. This signal reaches the earth in 300 seconds. Calculate the distance of the spacecraft from the earth. Given, speed of the signal = 3×108 m/s.