मराठी

The distance between the Sun and the Earth is 1.496 × 108 km and distance between the Earth and the Moon is 3.84 × 108 m. During solar eclipse the Moon comes in between the Earth and the Sun.

Advertisements
Advertisements

प्रश्न

The distance between the Sun and the Earth is 1.496 × 108 km and distance between the Earth and the Moon is 3.84 × 108 m. During solar eclipse the Moon comes in between the Earth and the Sun. What is distance between the Moon and the Sun at that particular time?

बेरीज
Advertisements

उत्तर

The distance between the Sun and the Earth is 1.496 × 108 km

= 1.496 × 108 × 103 m

= 1496 × 108 m

The distance between the Earth and the Moon is 3.84 × 108 m.

The distance between the Moon and the Sun at particular time (solar eclipse)

= (1496 × 108 – 3.84 × 108) m

= (1496 – 3.84) × 108 m

= 1492.16 × 108 m

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 8: Exponents and Powers - Exercise [पृष्ठ २७४]

APPEARS IN

एनसीईआरटी एक्झांप्लर Mathematics [English] Class 8
पाठ 8 Exponents and Powers
Exercise | Q 173. | पृष्ठ २७४

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

The diameter of the Sun is 1.4 × 109 m and the diameter of the Earth is 1.2756 × 107 m.


The table shows the average distance from each planet in our solar system to the sun.

Planet Distance from Sun
(km)
Distance from Sun
(km) Standard
Notation
Earth 149,600,000 1.496 × 108
Jupiter 778,300,000  
Mars 227,900,000  
Mercury 57,900,000  
Neptune 4,497,000,000  
Pluto 5,900,000,000  
Saturn 1,427,000,000  
Uranus 2,870,000,000  
Venus 108,200,000  
  1. Complete the table by expressing the distance from each planet to the Sun in scientific notation.
  2. Order the planets from closest to the sun to farthest from the sun.

Suppose you have a stretching machine which could stretch almost anything. For example, if you put a 5 metre stick into a (× 4) stretching machine (as shown below), you get a 20 metre stick. Now if you put 10 cm carrot into a (× 4) machine, how long will it be when it comes out?


Two machines can be hooked together. When something is sent through this hook up, the output from the first machine becomes the input for the second. Which stretching machine does the same work as two (× 2) machines hooked together?



Similarly, repeater machine is a hypothetical machine which automatically enlarges items several times. For example, sending a piece of wire through a (× 24) machine is the same as putting it through a (× 2) machine four times. So, if you send a 3 cm piece of wire through a (× 24) machine, its length becomes 3 × 2 × 2 × 2 × 2 = 48 cm. It can also be written that a base (2) machine is being applied 4 times.


What will be the new length of a 4 cm strip inserted in the machine?


Find three repeater machines that will do the same work as a (× 64) machine. Draw them, or describe them using exponents.


What will the following machine do to a 2 cm long piece of chalk?


Sanchay put a 1 cm stick of gum through a (1 × 3–2) machine. How long was the stick when it came out?


Neha needs to stretch some sticks to 252 times their original lengths, but her (× 25) machine is broken. Find a hook-up of two repeater machines that will do the same work as a (× 252) machine. To get started, think about the hookup you could use to replace the (× 25) machine.


Find two repeater machines that will do the same work as a (× 81) machine.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×