Chapter 12 – Exponents and Powers
156. Sanchay put a 1cm stick of gum through a (1 × 3^–2) machine. How long was the stick when it came out?
01
Aug
156. Sanchay put a 1cm stick of gum through a (1 × 3^–2) machine. How long was the stick when it came out? 156. Sanchay put a 1cm stick of gum through a (1 × 3^–2) machine. How long was the stick when it came out? August 1, 2021 Category: Chapter 12 - Exponents and [...]
155. What happens when 1 cm worms are sent through these hook-ups?
01
Aug
155. What happens when 1 cm worms are sent through these hook-ups? 155. What happens when 1 cm worms are sent through these hook-ups? August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class 8 ,
154. Shrinking Machine 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?
01
Aug
154. Shrinking Machine 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? 154. Shrinking Machine In a shrinking machine a piece of stick is compressed to reduce its [...]
153. In a repeater machine with 0 as an exponent, the base machine is applied 0 times. (a) What do these machines do to a piece of chalk? (b) What do you think the value of 60 is? You have seen that a hookup of repeater machines with the same base can be replaced by a single repeater machine. Similarly, when you multiply exponential expressions with the same base, you can replace them with a single expression.
01
Aug
153. In a repeater machine with 0 as an exponent, the base machine is applied 0 times. (a) What do these machines do to a piece of chalk? (b) What do you think the value of 60 is? You have seen that a hookup of repeater machines with the same base can be replaced by [...]
152. What will the following machine do to a 2 cm long piece of chalk?
01
Aug
152. What will the following machine do to a 2 cm long piece of chalk? 152. What will the following machine do to a 2 cm long piece of chalk? August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , NCERT Class 8 ,
151. Find three repeater machines that will do the same work as a (×64) machine. Draw them, or describe them using exponents.
01
Aug
151. Find three repeater machines that will do the same work as a (×64) machine. Draw them, or describe them using exponents. 151. Find three repeater machines that will do the same work as a (×64) machine. Draw them or describe them using exponents. August 1, 2021 Category: Chapter 12 - Exponents and Powers , [...]
150. For the following repeater machines, how many times the base machine is applied and how much the total stretch is?
01
Aug
150. For the following repeater machines, how many times the base machine is applied and how much the total stretch is? 150. For the following repeater machines how many times the base machine is applied and how much the total stretch is? August 1, 2021 Category: Chapter 12 - Exponents and Powers , Maths , [...]
149. Repeater Machine Similarly, repeater machine is a hypothetical machine which automatically enlarges items several times. For example, sending a piece of wire through a (× 2^4) 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 (× 2^4) 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.
01
Aug
149. Repeater Machine Similarly, repeater machine is a hypothetical machine which automatically enlarges items several times. For example, sending a piece of wire through a (× 2^4) 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 (× 2^4) [...]
Tags:
149. Repeater Machine Similarly ,
if you send a 3 cm piece of wire through a (× 2^4) 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. ,
repeater machine is a hypothetical machine which automatically enlarges items several times. For example ,
sending a piece of wire through a (× 2^4) machine is the same as putting it through a (× 2) machine four times. So ,
148. 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. (a) Which two machines hooked together do the same work a ( ×10^2) machine does? Is there more than one arrangement of two machines that will work?
01
Aug
148. 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. (a) Which two machines hooked together do the same work a ( ×10^2) machine does? Is there more than one arrangement of two machines that will work? 144. [...]
147. Stretching Machine 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?
01
Aug
147. Stretching Machine 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 [...]
Tags:
147. Stretching Machine Suppose you have a stretching machine which could stretch almost anything. For example ,
how long will it be when it comes out? ,
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 ,