English

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

Advertisements
Advertisements

Question

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

Sum
Advertisements

Solution

The machine produce × 1100 = 1

So, if we insert 2 cm long piece of chalk in that machine, the piece of chalk remains same.

shaalaa.com
  Is there an error in this question or solution?
Chapter 8: Exponents and Powers - Exercise [Page 266]

APPEARS IN

NCERT Exemplar Mathematics [English] Class 8
Chapter 8 Exponents and Powers
Exercise | Q 152. | Page 266

Video TutorialsVIEW ALL [1]

RELATED QUESTIONS

Mass of earth is 5.97 × 1024 kg and the mass of the moon is 7.35 × 1022 kg. What is the total mass?


This table shows the mass of one atom for five chemical elements. Use it to answer the question given.

Element Mass of atom (kg)
Titanium 7.95 × 10–26
Lead 3.44 × 10–25
Silver 1.79 × 10–25
Lithium 1.15 × 10–26
Hydrogen 1.674 × 10–27
  1. Which is the heaviest element?
  2. Which element is lighter, Silver or Titanium?
  3. List all five elements in order from lightest to heaviest.

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?



For the following repeater machines, how many times the base machine is applied and how much the total stretch is?


In a shrinking machine, a piece of stick is compressed to reduce its length. If 9 cm long sandwich is put into the shrinking machine below, how many cm long will it be when it emerges?


Ajay had a 1 cm piece of gum. He put it through repeater machine given below and it came out `1/(100,000)` cm long. What is the missing value?


The left column of the chart lists the lengths of input pieces of ribbon. Stretching machines are listed across the top. The other entries are the outputs for sending the input ribbon from that row through the machine from that column. Copy and complete the chart.

Input Length Machine
  × 2      
  1 5    
3       15
  14   7  

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?


A particular star is at a distance of about 8.1 × 1013 km from the Earth. Assuring that light travels at 3 × 108 m per second, find how long does light takes from that star to reach the Earth.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×