Recent questions tagged chapter9

0 votes

0 answers

How much should the pressure on a litre of water be changed to compress it by

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

0 votes

0 answers

Anvils made of single crystals of diamond, with the shape as shown in Fig., are used to investigate behaviour of materials under very high pressures. Flat faces at the narrow end of the anvil have a diameter of 0.50 mm, and the wide ends are subjected to a compressional force of 50,000 N. What is the pressure at the tip of the anvil?

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

0 votes

0 answers

A rod of length 1.05 m having negligible mass is supported at its ends by two wires of steel (wire A) and aluminium (wire B) of equal lengths as shown in Fig.. The cross-sectional areas of wires A and B are 1.0 `mm^2` and 2.0 `mm^2` ,respectively. At what point along the rod should a mass m be suspended in order to produce (a) equal stresses and (b) equal strains in both steel and aluminium wires.

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

0 votes

0 answers

A mild steel wire of length 1.0 m and cross-sectional area `0.50 × 10^(-2)` c`m^2` is stretched, well within its elastic limit, horizontally between two pillars. A mass of 100 g is suspended from the mid-point of the wire. Calculate the depression at the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

0 votes

0 answers

Two strips of metal are riveted together at their ends by four rivets, each of diameter 6.0 mm. What is the maximum tension that can be exerted by the riveted strip if the shearing stress on the rivet is not to exceed `6.9 × 10^7` Pa? Assume that each rivet is to carry one quarter of the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

0 votes

0 answers

The Marina trench is located in the Pacific Ocean, and at one place it is nearly eleven km beneath the surface of water. The water pressure at the bottom of the trench is about `1.1 × 10^8` Pa. A steel ball of initial volume 0.32 m3 is dropped into the ocean and falls to the bottom of the trench. What is the change in the volume of the ball when it reaches to the

asked Mar 19, 2022 in 11th Physics by varun (6.7k points)

0 votes

0 answers

Which is the like term as

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

0 votes

0 answers

Which of the following is an

asked Jan 18, 2022 in 8th-maths by Simran (1.8k points)

0 votes

0 answers

The irreducible factorisation of 3a3 + 6a

asked Jan 18, 2022 in 8th-maths by krutika (1.7k points)

0 votes

0 answers

a ( b + c) = ab + ac

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

0 votes

0 answers

The representation of an expression as the product of its factors is called

asked Jan 18, 2022 in 8th-maths by krutika (1.7k points)

0 votes

0 answers

(x + a) (x + b) = x2 + (a + b)x +

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

0 votes

0 answers

An identity is true for all values of its

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

0 votes

0 answers

Common factor of `x^2y` and `– xy^2` is

asked Jan 18, 2022 in 8th-maths by sumit (1.6k points)

0 votes

0 answers

`(3x + 3x^2) -: 3x =

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

0 votes

0 answers

Simplify (i) `– pqr (p^2 + q^2 + r^2)` (ii) (px + qy) (ax –

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

0 votes

0 answers

Find the expansion of the following using suitable identity.(i) (3x + 7y) (3x – 7y) (ii)

asked Jan 18, 2022 in 8th-maths by nikhil (1.8k points)

0 votes

0 answers

Factorise the following. (i) `21x^2y^3 + 27x^3y^2` (ii) `a^3 – 4a^2 + 12 –

asked Jan 18, 2022 in 8th-maths by purvi (1.8k points)

0 votes

0 answers

Factorise the following. (i)4x^2 – 20x + 25 (ii) `(y^2/9-9)` (iii) `x^4 –

asked Jan 18, 2022 in 8th-maths by vaibhav (1.7k points)

0 votes

0 answers

Evaluate using suitable identities.(i) `(48)^2` (ii) `181^2 – 19^2` (iii) `497 xx 505` (iv) `2.07 xx

asked Jan 18, 2022 in 8th-maths by Arun (1.7k points)

Recent questions tagged chapter9

Categories