Wednesday

February 22, 2017
Total # Posts: 264

**Math**

In its monthly report, the local animal shelter states that it currently has 24 dogs and 18 cats available for adoption. 8 of the dogs and 6 of the cats are male. If two animals are selected at random, what is the probability that both are female cats?

*February 13, 2017*

**maths**

A ladder leaning against a wall makes an angle 60 with the horizontal if the foot of the ladder is the 2.5m away from the wall find the length of the ladder

*February 11, 2017*

**soild mechanics**

Under what axial tensile load, the diameter of a steel bar will be reduced from 8 cm to 7.995 cm? Take E as t/cm2 and Poisson’s ratio as 0.3

*February 5, 2017*

**Math**

3/5 = 0.6 2/3 = 0.6667 Therefore, 0.3, 0.35, 3/5, 0.66, 2/3

*January 31, 2017*

**maths**

?(x^4-1)/(x^2 ?(x^4+x^2+1)) dx

*January 23, 2017*

**Science**

What is the result of c6h5ch2cooh +H^+/KMnO4

*December 8, 2016*

**Science**

What is the result of c6h5ch2cooh +H^+/KMnO4

*November 29, 2016*

**maths**

Convert in improper fraction 6 5/12

*November 21, 2016*

**Chemistry**

Copper (I) chloride, CuCL, has Ksp = 1.9 x 10^ -7.calculate the molar solubility of CuCL in A)pure water, B)0.0200M HCl solution C) 0.200M HCl solution, and d) 0.150M CaCl2 solution. I used the ice table and for a) i got 0.000435 M sort of lost for the rest

*November 12, 2016*

**math**

7/10 time 100 is 70% of shots saved 100-70 = 30. 30% of the time the shots will go in. take 30% of 100 and you will get 30. the goalie will let in 30 shots

*November 12, 2016*

**science**

Urea forms a ideal solution in water. Determine the vapour pressure in an aqua solution containing 10 percent bymass at 40degree Celsius

*October 26, 2016*

**science**

Two charges placed at a distance r apart exert force F on each other at what distance will these charges experience same force in medium of dielectric constant K.

*June 18, 2016*

**Math**

The midnight temperature of Delhi in the month of December was 100C If dropped by 40C in the next three hours.What was the temperature after 3hours

*June 10, 2016*

**science**

When a particle starts from rests and moves with constant acceleration then why its path is always a straight line?

*June 1, 2016*

**math**

use dominance to slove the game with following pay-off matrices: ((2 3 1/2) (3/2 2 0) (1/2 1 1)). ANS: A=(1/4,0,3/4); B=(1/4,0,3/4); v=7/8. i got answer, but how to do this? i need solution

*May 29, 2016*

**math**

slove the game with following pay-off 3*3 matrices:((2,3,1/2)(3/2,2,0)(1/2,1,1))

*May 29, 2016*

**physics**

a bob of mass m of a long pendulum of lengtg Lis at a horizontal position p.when released ,it hits a ball of mass m placed at a position Q.assume the collision to be elastic .after hitting the ball at Q,the bob will attain a height ?

*April 14, 2016*

**Math**

Karthi had RS.5000 with him. he lent a part of 12% per annum simple interest and the remaining at 15% per annum. his total annum income was Rs.700.find the sum lent at12% per annum.

*April 1, 2016*

**MATH**

In Triangle ABC, medians BE and CD are produced respectively to points X and Y such that CD=DX and BE=EY as shown in the figure. Show that the points X, A and Y are collinear. Also show that A is the mid point of XY

*March 11, 2016*

**maths**

of 2 chords the 1 which is nearer to the centre is larger.proof

*March 10, 2016*

**maths**

if the radius and height of a cone both are increased by 10%. how much is the volume increased.

*March 10, 2016*

**maths**

2 equal cords AB and CD intersect at E.prove that arc AD=arcCB

*March 10, 2016*

**maths**

if a hollow sphere of internal and external diameter 4cm melted 8cm respectively melted into a cone of base diameter 8cm . find the height of cone

*March 8, 2016*

**maths**

the ratio between the radius of the base and height of a cylinder is 2:3.if its volume is 1617.find the total surface area of cylinder

*March 8, 2016*

**slps**

the class mark of the observation are 17, 21, 25, 29, 33,37,41,45.find the class intervals

*March 8, 2016*

**Physics**

A digital voltmeter with high internal resistance gives a maximum reading of 2.0 V. It is used to determine current by measuring the potential difference across a standard resistor S through which current has passed. What should the resistance of S be to measure currents up to...

*February 4, 2016*

**Physics**

A high voltage unit has an internal resistance of 50 mega ohms. On open circuit, the potential difference across its output is 3000 V. When a resistor R is connected across its output, the potential difference at the output falls to 1000 V. Calculate the resistance of R.

*February 4, 2016*

**Physics (Electricity)**

A meter has a resistance of 75 ohms and gives full-scale deflection when it passes a current of 1.0 mA. How would you adapt the meter to read a) Currents up to 1A b) voltages up to: 5V c) Voltages up to: 100V

*February 4, 2016*

**science**

The work done by 500 calories of heat in isothermal expansion of ideal gas is?

*December 31, 2015*

**Physics**

A uniform rod weighs 10kg and with a load 5kg attached to one end,it balances on a knife edge at 2m from that end.the length of the rod is?

*December 11, 2015*

**Physics**

A uniform rod is 4m long and weighs 10 kg.if it is supported on a knife edge at one metre from the end what weight placed at that end keeps the rod horizontal?

*December 11, 2015*

**aband public school**

the side of square whose parimeter is 20m

*December 1, 2015*

**math**

A jug contains 1 2 L of water. The water is shared equally among 5 children. How much water does each child receive? A 1 10 L B 1 5 L C 2 5 L D 5 2 L

*November 23, 2015*

**math**

The first five square numbers are 1, 4, 9, 16, and 25, and their average is 11. What is the average of the next five square numbers?

*November 23, 2015*

**Math**

5 sin theta +12 cos theta = 13. Prove 5 cos theta - 12 sin theta =0.

*September 12, 2015*

**human development**

nvm i figured it out

*April 18, 2015*

**human development**

Describe how the body grows over childhood and adolescence.

*April 18, 2015*

**human development**

What changes take place in early adolescence to gender identity?

*April 18, 2015*

**human development**

thankyou ms.sue this got my train of thought going

*April 18, 2015*

**human development**

What are some of the ways that children learn about gender stereotypes?

*April 18, 2015*

**math trigonometry**

A ladder 8.5m long is placed with its foot at a distance of 4m from the wall of a house and just reaches a window will . find the height of a window will and the sine and tan of the angle which the ladder makes with the wall

*April 17, 2015*

**Shegal**

Three identical metal spheres are hung from a ceiling on rigid non-conducting rods. Sphere 1, sphere 2, and sphere 3 have charges 75 µC, −44 µC, and 50 µC, respectively. Each sphere is separated by 0.15 m. What is the net electric force on the middle ...

*March 29, 2015*

**Maths**

There are 50 students in a class of which 40 are boys and the rest are girls the average weight of the class is 44kg and the averageweight of the girls us 40kg. find the average wieght of the boys

*March 15, 2015*

**physics**

a car is moving at speed of 50km/hr ,can be stopped by brake at least at 6 m.If the same car is moving at speed of 100 km/hr ,what is the minimum stopping distance?

*March 14, 2015*

**communication**

Ms. Sue what would you say is the greatest barrier to intercultural communication?

*February 16, 2015*

**communication**

OH OH OH ms.sue I FOUND SOMETHING.. there are 3 bridging strategies: 1)develop appropriate knowledge 2)develop motivation 3)develop skill i found it haha !! thanks though:)

*February 16, 2015*

**communication**

exactly :( oh even you don't know ...

*February 16, 2015*

**communication**

I have no material to find anything about bridging strategy.. what is bridging strategy?

*February 16, 2015*

**communication**

I don't really have choices yet.. what type of choices do you suggest ms.sue?

*February 16, 2015*

**communication**

What bridging strategy would be useful to develop in order to become more interculturally competent?

*February 16, 2015*

**math**

the length and breadth of the room were measured and area calculated as 600sq.m. (l+B=50) later found the meter rod that had used as an error 5cm i.e actual length of the rod ws 95cm instead of 100cm. find the correct area of the room

*February 16, 2015*

**maths**

two straight poles length 80m, 50 m vertically with a distance 40m. a rope is connected their tops. find the length of the rope?

*February 16, 2015*

**Chemistry 2**

If a gaseous sample contains 74% N2 by volume, what is the solubility of N2 in water at 25°C and 1.0 atm (kH in H2O at 25°C = 7.0 10-4 mol/Latm)?

*February 11, 2015*

**Bio 11**

1 example for each A) Tentacled Mollusk B) 2-shelled Mollusk C) 1-shelled Mollusk D)Clever and smart Mollusk E) Pearl producing Mollusk F) Devoted mother Mollusk G) Land Mollusk H) Dangerous Mollusk I) Sneaky Mollusk J) Herbivore Mollusk K) 38-90!! tentacled Mollusk L) Ink ...

*November 17, 2014*

**Bio 11**

How is lifestyle related to nervous system development?

*November 17, 2014*

**Bio 11**

'Slow' vs. 'Fast' : give 3 example organisms each

*November 17, 2014*

**Bio 11**

what are 5 examples of the phylum porifera?

*November 4, 2014*

**Math 11**

A triangular pyramid has faces that are all equalatetal triangles. Each side length is 16 cm. What is the surface area of the pyramid?

*October 30, 2014*

**Bio 11**

what is the advantage of sexual reproduction over asexual reproduction

*October 27, 2014*

**Math 11**

A roller coaster has a track that drops at an angle of depression of 25 degrees from a height of 14.9 m. When it reaches the ground in travels horizontally for 8 m. It then rises at an angle of elevation of 47 degrees to a height of 26.8 m A) What is the total horizontal ...

*October 20, 2014*

**Math 11**

An airplane is flying 100 km north and 185 km west of an airport. it is flying at a height of 7 km. A) what is the straight-line distace to the airport? B) what is the angle of elevation of the airplane, from the point of view of the airport?

*October 20, 2014*

**math 11**

An asymmetrical roof has measurements show in the diagram below. if the vertical supports are each two feet apart, calculate the measure of angle G and the slant heights (lengths x and y) of the roof.

*October 20, 2014*

**Math 11**

Chung-ho is standing on the top of a building that is 135 m talk. The angle of depression to the top of the building next door is 71 degrees. The angle of depression to the basebof the building is 77 degrees. The building are 31 m apart. How talk is the other building?

*October 20, 2014*

**Math11**

bernhardt and julia are observing an eagals nest in a tree. Julia is 75 m from the tree, and sees it an angle of elevation of 42 degrees. A) How high up the tree is the nest? B) bernhardt is standing 30 m behind Julia. At what angle of elevation does he see the nest?

*October 20, 2014*

**Human Development**

Why is it not ethical if a researcher researches on some people and the people get affected with for example, trouble in speech. What are the two reasons as to why this is not ethical?

*October 17, 2014*

**English**

What does it mean to be a professional? and what does it mean to be in a profession?

*September 29, 2014*

**English**

Oh Sorry I think you couldn't see my question haha!! SO how should I "structure" my thesis???

*September 29, 2014*

**English**

discuss the current state of the field of early childhood care and education from your own perspective. In this field, what does it mean to be a professional and what does it mean to be in a profession? Include a component of political analysis in your paper (e.g. a provincial...

*September 29, 2014*

**Physics**

A projectile is launched with an initial speed of 80.0m/s at an angle of 40 degrees above the horizontal. The projectile lands on a hillside 3.80s later. Neglect air friction. What is the projectile's velocity at the highest point of its trajectory? What is the straight-...

*September 15, 2014*

**Maths**

COD = 44 degree ( Vertically opposite angles) AOB = 180 - 44 = 136 ( linear Pair) AOB = COD = 135 (VERTICALLY OPPOSITE ANGLES)

*September 12, 2014*

**sanskrit**

i need information about jaydeva in sanskrit

*August 29, 2014*

**science**

why does not refraction occurs on mirrors ????? means in mirror reflection occurs not refracton why??????

*August 25, 2014*

**science**

ZnS(aq) + 2HCl(aq) --> ZnCl2(aq) + 2H2S(g) what happens in this reaction means what changes& colour happens????

*May 21, 2014*

**MATH**

say please

*March 24, 2014*

**MATH**

please anyone help me fast

*March 24, 2014*

**MATH**

I have done one-third of my homework. What fraction is left to be done? a. 1/3 b. 2/3 c. 1/2

*March 24, 2014*

**geometric progresions**

The ratio of the sum of the first 8 terms of a G.P. to the sum of the first 4 terms of the same G.P. is 97:81, where the common ratio of the G.P. is a real number. What is the common ratio?

*March 2, 2014*

**arithmetic**

The ratio of the sum of the first 8 terms of a G.P. to the sum of the first 4 terms of the same G.P. is 97:81, where the common ratio of the G.P. is a real number. What is the common ratio?

*March 2, 2014*

**bio**

How is the oxygen production in 30 seconds related to the rate of the reaction?

*January 1, 2014*

**math**

thank u..

*November 25, 2013*

**math**

divide the polynomial x^3-3x^2+x+2 by x+2. Express your answer in the form f(x)=d(x)q(x)+r(x).

*November 25, 2013*

**math**

factor x^4-3x^3-11x^2+3x+10 completely using the factor theorem.

*November 25, 2013*

**physics**

A large, flat, horizontal sheet of charge has a charge per unit area of 2.05 µC/m2. Find the electric field just above the middle of the sheet. kN/C

*September 13, 2013*

**physics**

The charge per unit length on a long, straight filament is -87.0 µC/m. (a) Find the electric field 10.0 cm from the filament. Distances are measured perpendicular to the length of the filament. (Take radially inward toward the filament as the positive direction.) MN/C (b...

*September 13, 2013*

**physics**

The electric field everywhere on the surface of a thin, spherical shell of radius 0.710 m is measured to be 860 N/C and points radially toward the center of the sphere. (a) What is the net charge within the sphere's surface? nC (b) What can you conclude about the nature ...

*September 13, 2013*

**PHYSICS**

An automobile battery has an emf of 12.6 V and an internal resistance of 0.0500 . The headlights together present equivalent resistance 5.60 (assumed constant). (a) What is the potential difference across the headlight bulbs when they are the only load on the battery? V (b) ...

*September 6, 2013*

**physics**

Two resistors connected in series have an equivalent resistance of 783.4 Ω. When they are connected in parallel, their equivalent resistance is 171.3 Ω. Find the resistance of each resistor. Ω (small resistance) Ω (large resistance

*September 6, 2013*

**physics**

A 120-V motor has mechanical power output of 2.20 hp. It is 92.0% efficient in converting power that it takes in by electrical transmission into mechanical power. (a) Find the current in the motor (A) (b) Find the energy delivered to the motor by electrical transmission in 2....

*September 5, 2013*

**physics**

The quantity of charge q (in coulombs) that has passed through a surface of area 2.08 cm2 varies with time according to the equation q = 4t3 + 5t + 6, where t is in seconds. (a) What is the instantaneous current through the surface at t = 1.08 s? (b) What is the value of the ...

*September 5, 2013*

**Healthcare Finance**

accounting practices within health care organization

*July 6, 2013*

**12th**

an electron above the earth is balanced by the gravitational force and the electric field of the earth. find the electric field of the earth.

*April 27, 2013*

**physics**

Amplitude of the wave is 0.2m. The time period of the vibration is 0.5secs. Calculate the frequency, velocity and the wave length.

*March 12, 2013*

**grade 11 math**

Determine two angles between 0°and 360°that have a secant of -4. Round your answers to the nearest degree. There are tw answer 104°( I got this one but there is also 256° I don't have anyidea for this one please explain to me I appreciate your time thankyou...

*February 23, 2013*

**grade 11 math**

Determine two angles between 0°and 360°that have a secant of -4. Round your answers to the nearest degree. There are tw answer 104°( I got this one but there is also 256° I don't have anyidea for this one please explain to me I appreciate your time thankyou...

*February 23, 2013*

**Chemistry**

Ok thxxx:)

*February 22, 2013*

**Chemistry**

Heyy Jiskha!! I need ur help today:) Hope you will help:D My question is that why is supersaturation unstable... I read the explanations for this on many websites but for some odd reason I just cannot get it to sink in my mind. What does it mean by it is unstable how is it ...

*February 22, 2013*

**Grade 11 math**

I don'tquite understand we never learned y and r stuff. We just started this..the chapter is called Angles of rotation. Andwhere did u get the 10 from... and um sorry for bothering you but can u help me do one because there are many..:( Thanks I greatly appreciate you help!

*December 18, 2012*

**Grade 11 math**

If the given point is on the terminal arm of an angle A in stadard position. 0 degrees more than or equal too A and less than or equal too 180 degree, find sin A and cos A: a) (6,8) b) (-5,12) Can you tell me how you get it because I do not understand it at all please help!

*December 18, 2012*

**math**

write a subtraction story using the numbers 63 and 18

*December 2, 2012*

**Physics**

I though that the entire system goes through uniform acceleration.

*October 20, 2012*