# Kala

Most popular questions and responses by Kala
1. ## physics

A piece of metal of mass 112g is heated 100 degree C.,and dropped into a copper calorimeter of mass 40g containing 200g of water at 16 derreC. Neglecting the heat loss, the specific het of the meatal is nearly,if the equilibrium temperature reached is

2. ## physics

A sprinter can accelerate with constant acceleration for 2.10s before reaching top speed. He can run the 100-meter dash in 10 s. What is his speed as he crosses the finish line?

3. ## physics

a wire whose cross-sectional area is 4mm^2 is stretched by 0.1 mm by a certain load.if a similar wire double the area of cross-section is under the same load,then then elongation would be ans: 1)0.05mm

4. ## physics

a string of cross section 2 cm^2 is doubled in length by the application of a longitudinal force 2*10^5dynes.the young"s modulus is: 1.10^5 dyne/cm^2

5. ## physics

if a stress is numerically equal to young's modulus the elongation will be ans: 1.)equal to the original length. but how?

6. ## physics

The densities of two substances are in the ratio 5:6 and the specific heats are in the ratio 3:5 respectively. The ratio of their thermal capacities per unit volume is

7. ## physics

when the metal sphere is suspended at the end of a meal wire its extension is 0.4mm. If another metal sphere of the same material with its radius half as the previous is suspended then extension would be ans: 1)0.05mm

8. ## chemistry

When a 16.9-g sample of NaOH dissolves in 70.0 g of water in a calorimeter, the temperature rises from 22.4°C to 86.6°C.

9. ## physics

The thermal capacity of 10g of a substance is 8 calories. the specific heat is in J/kg-K options : 1.3360 2.3630

10. ## physics

A body is executing of amplitude 1m . Its velocity while passing through mean position is 10m/s . Find its frequency

11. ## physics

when tension 'F' is applied the elongation produced in uniform wire of length l,radius r is e; when the tension 2F is applied the elongation produced in another uniform wire of length 2l and radius 2r made of same material is ans: 1.)1.0 e

12. ## Physics

David is driving a steady 21.0m/s when he passes Tina, who is sitting in her car at rest. Tina begins to accelerate at a steady 2.50m/s2 at the instant when David passes. How far does Tina drive before passing David? What is her speed as she passes him?

13. ## physics

there are two wires of same material.their radii and length are both in the ratio 1:2.if the extensions produced are equal, what is the ratio of the load ? ans: 1)1:2

14. ## physics

a metallic ring of radius 'r' and cross sectional area is fitted into an wooden circular disc of radius R (R greater than r).If he young's modulus of the material of the ring is Y, the fore with which the metal ring expands is : ans: 1.AY(R-r)/r

15. ## chemistry

You have a metal tank containing 74.0 moles of nitrogen gas at a pressure of 15.0 atm. If the pressure is measured at a temperature of 25.0 °C, then the volume of the tank must be ___ liters. (Round your answer to one decimal place and do not include

16. ## managerial economoics

close relationship between mnagement and economics has led to the development of managerial economics

17. ## Algebra

Where do I put parentheses and brackets to make this statement true? 15÷3×5+4×8 = 40

18. ## physics

an aluminium rod has a breaking strain 0.2%.The minimum cross section area of he rd in m^2 in order to support a load of 10^4N is if young's modulus is 7*10^9 N/m^2 ans: 1.) 7.1*10^-4

19. ## physical science

how would you classify a solution that contains 1.5g of lithium carbonate in 100g of water at 20 degrees

20. ## physics

A sports car weighing 600 kg travels North at 35 m/s. Running a stop sign, the car crashes into a 2000 kg truck traveling East at 20 m/s. The vehicles become locked together and travel 18 meters before stopping. Find the direction and the deceleration of

21. ## grammar

How do the Noun phrases in the following sentence acquire case ? -It is odd that Bill should have refused the offer It has been noted that Noun phrases need case because they need to be visible in order to receive a theta role . Discuss the problems raised

24x+16=12

23. ## Math

1000 cubic measures?

24. ## physics

two wires A and B have Youngsmodlii in the ratio of length's is 1:2 and ratio of length's is 1:1 .Under the application of same stress the rato of elongations is ---- ans 1.)2:1

25. ## art

The word "Pantheon" refers to: A. the people of the Pan dynasty. B. the ancient hill of Rome where Nero built his house. C. "all the gods".

26. ## maths

a number which is less than or equal to 150 but if counted in pairs, one will remain if counted in threes, two will remain if counted in fours, three will remain if counted in fives, four will remain if counted in sixes, five will remain if counted in

27. ## English

I need to know whether I have at least five adjectives and five adverbs in this paragraph. I am really struggling with this. I understand what adverbs and adjectives are, I am just having trouble writing a paragraph where I have to insert them! One of the

28. ## managerial economics

firms demand function,p=24-0.54q and the average cost function,AC=Q2-8Q+36+3/Q,calculate the level of output Q, which maximize total revenue,maximizes profits

29. ## CIS/105

Hello I need help with my upcoming finals project here is what I have to do: Use information and data obtained from at least four reliable Internet sources to produce a 12- to 15-slide PowerPoint® presentation about multimedia tools that aid classroom

30. ## Maths

Factorize 2x2square +8x - 10 =0

31. ## ART/101

Hello I am having a bit of trouble with my DQ for this week and I was wondering if anybody could help me? The DQ for this week is: This week we are looking at symbolism and given the example of a Treaty signing. Tell me what you think about the entire

32. ## Math

Showing all work convert 315m to dam

1. ## Math-Urgent

0.8 seconds

posted on September 29, 2016
2. ## health insurance

15.00

posted on August 18, 2016
3. ## Math

Factorize 2x2square+8x - 10=0

posted on December 9, 2015
4. ## Science

WAVE LENGHT

posted on October 2, 2013
5. ## social studies

8.B ANOTHER IS FOR A NOTHER Q,IS SPREAD NEW CROPS

posted on July 25, 2013
6. ## social studies

4. WOULD BE PERSIA

posted on July 25, 2013
7. ## history

B IS WAT I PUT ON MY TEST

posted on July 25, 2013
8. ## math

Third one is 0.5741

posted on May 19, 2013
9. ## grammar check

"Have you ever read the story,'The tell-Tale Heart', by Edgar Allan Poe"? Dave asked. "Did the professor say, 'Put down your pencils'!" Janice asked.

posted on June 4, 2010
10. ## chem

convert the following quantities to the required unit. 277 cm to meters

posted on August 19, 2009
11. ## Math

is this what u r looking for? rl=12in t=14y no clue. r those ur answers?

posted on September 13, 2007
12. ## com215

i would just use my own ethnic group

posted on September 13, 2007