Class 9

bittu45

Asked: November 30, 2023In: Class 9 Science

Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.

NCERT Solutions for Class 9 Science Chapter 11 Sound Page No. 138 Exercise Question 7. 9th Science Chapter 11 Sound NCERT Academic Session 2023-2024 CBSE Board and Others state Board Description: Sound waves in air result from vibrations, forming compressions and ...

ashwin99

Asked: November 25, 2023In: Class 9 Science

In the following example, try to identify the number of times the velocity of the ball changes:

“A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team”. Also identify ...

piku

Asked: November 25, 2023In: Class 9 Science

Which of the following has more inertia: (a) a rubber ball and a stone of the same size? (b) a bicycle and a train? (c) a five- rupees coin and a one-rupee coin?

NCERT Solutions for Class 9 Science Chapter 8 Force and Laws of Motion Page No. 91 Question 1. NCERT Questions Exercises 9th Science Chapter 8 Force and Laws of Motion NCERT Academic Session 2023-2024 CBSE Board and Others state Board Description:

chirag345

Asked: November 25, 2023In: Class 9 Maths

ABCD is a quadrilateral in which P, Q, R and S are mid-points of the sides AB, BC, CD and DA. AC is a diagonal. Show that :

(i) SR||AC and SR = 1/2 AC (ii) PQ = SR (iii) PQRS is a parallelogram. NCERT Solutions for Class 9 Maths Chapter 8 QUADRILATERALS Exercise 8.2 Question 1. NCERT Questions Exercises 9th Maths Chapter 8 QUADRILATERALS NCERT Academic Session 2023-2024

bittu45

Asked: November 24, 2023In: Class 9 Maths

Two circles intersect at two points B and C. Through B, two line segments ABD and PBQ are drawn to intersect the circles at A, D and P, Q respectively (see Fig. 9.27). Prove that ∠ACP =∠QCD.

NCERT Solutions for Class 9 Maths Chapter 9 Circles Exercise 9.3 Question 9. NCERT Questions Exercises 9th Maths Chapter 9 Circles NCERT Academic Session 2023-2024 CBSE Board and Others state Board Description: Two intersecting circles create points where their circumferences meet. ...

Category: Class 9

Two children are at opposite ends of an aluminium rod. One strikes the end of the rod with a stone. Find the ratio of times taken by the sound wave in air and in aluminium to reach the second child.

In the following example, try to identify the number of times the velocity of the ball changes:

Which of the following has more inertia: (a) a rubber ball and a stone of the same size? (b) a bicycle and a train? (c) a five- rupees coin and a one-rupee coin?

ABCD is a quadrilateral in which P, Q, R and S are mid-points of the sides AB, BC, CD and DA. AC is a diagonal. Show that :

Two circles intersect at two points B and C. Through B, two line segments ABD and PBQ are drawn to intersect the circles at A, D and P, Q respectively (see Fig. 9.27). Prove that ∠ACP =∠QCD.

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