Wednesday

January 18, 2017
Total # Posts: 542

**MATHS**

matt and ruba each have one coin. The total amount of money is less than 50p. work out the probability that exactly one of the coins is a 10p piece. assume that all possible coins are equally likely.

*November 5, 2011*

**maths**

please help as soon as possible

*November 4, 2011*

**maths**

matt and ruba each have one coin. The total amount of money is less than 50p. work out the probability that exactly one of the coins is a 10p piece. assume that all possible coins are equally likely. please can you explain i have to know how to do this

*November 4, 2011*

**CHEMISTRY**

Thank you

*November 2, 2011*

**CHEMISTRY**

thank you so is AL2O3 3 elements Ca(HCO3)2 4 elements

*November 2, 2011*

**CHEMISTRY**

please help

*November 2, 2011*

**CHEMISTRY**

how many elements in (NH4)2SO4

*November 2, 2011*

**chemistry ASAP**

name the following: H2SeO3 H2TeO2 PO3^3- HCLO4 Please explain how to find the names !!!!!

*October 31, 2011*

**Physics**

The conducting rod ab shown below makes frictionless contact with metal rails ca and db. The apparatus is in a uniform magnetic field of 0.855 T, perpendicular to the plane of the figure. The length L of the rod is 25 cm. (a) Find the magnitude of the emf induced in the rod ...

*October 19, 2011*

**Math**

How do I multiply 100,400,300,700 x 300,555,555

*October 12, 2011*

**math**

what is the total price of a sweatshirt that is priced at $48 and taxed at 6.5%?

*October 11, 2011*

**6th**

what is the sum of 3142,6328, and 4743 to the nearest thousand?

*October 6, 2011*

**maths**

a car travels at a speed of 35mph how long would it take a car to travel 7miles

*October 3, 2011*

**physcis!**

A car accelerates from rest at 4.9 m/s2. How much time does it need to attain a speed of 6 m/s?

*September 18, 2011*

**physics! please help!**

A car accelerates from rest at 4.9 m/s2. How much time does it need to attain a speed of 6 m/s?

*September 18, 2011*

**Physics**

Two ants race across a table 65 cm long. One travels at 5.76 cm/s and the other at 3.99999 cm/s. When the first one crosses the finish line, how far behind is the second one?

*September 18, 2011*

**Calculus**

The graph A(x) has points (-3,0), (0,-2), (1,0) and (2,3). If C(x) is defined by C(x)=A(2x+3), then what is the domain and range of C and how would the graph of C(x) look like? Also, is there any way to find what the actual equation of A(x) is with the points listed above? ...

*September 6, 2011*

**Math**

a) The junior accountant is the bottleneck b) The implied utilization of the employees: Administration support person: 37.2% 3575min (how many hours he actually works)/ 9600min (his capacity, 60minx8hx20d) = 0.372 Senior accountant: 69.2% 6650min/9600min= 0.692 Junior ...

*August 31, 2011*

**Physics**

An object, that is 3.25 mm high is placed 16 cm in front of a lens. The image produced by this lens appears 6.0 cm behind the object, as the figure shows. (a) What is the focal length of this lens and what type of lens is it? (b) What is the height of the image? Is it real or ...

*July 27, 2011*

**Physics**

An object 0.600 cm tall is placed 16.5 cm to the left of the vertex of a concave mirror having a radius of curvature of 22.0 cm. (a) Draw a principle-ray diagram showing the formation of the image. (b) Calculate the position, size, orientation (erect or inverted), and nature (...

*July 27, 2011*

**Physics**

A speedboat, starting from rest, moves along a straight line away from the dock. The boat has a constant acceleration of +3.00 m/s2. A siren on the dock is producing a 755 Hz tone. Assuming that the air temperature is 20.0oC, what is the frequency of the sound heard by a ...

*July 27, 2011*

**sciencs**

what is denser, 1 grams of gold or 1 kilograms of copper? why?

*July 25, 2011*

**physics**

additional information:the distance between wire 1 and wire is 25 cm and the distance between the wire 2 and point A is 12 cm.

*July 25, 2011*

**physics**

Consider two current carrying wires shown below. The current in the wire 1 is 4.5 A in the positive x direction. Find the magnitude and direction of the current in wire 2 if the net magnetic field at point A is to be 7.5 μT in the positive z direction (coming out of the ...

*July 25, 2011*

**Physics**

The conducting rod ab shown below makes frictionless contact with metal rails ca and db. The apparatus is in a uniform magnetic field of 0.855 T, perpendicular to the plane of the figure. The length L of the rod is 25 cm. (a) Find the magnitude of the emf induced in the rod ...

*July 24, 2011*

**Physics**

The conducting rod ab shown below makes frictionless contact with metal rails ca and db. The apparatus is in a uniform magnetic field of 0.855 T, perpendicular to the plane of the figure. The length L of the rod is 25 cm. (a) Find the magnitude of the emf induced in the rod ...

*July 24, 2011*

**Physics**

But that only gives me the force. I need the charge to help me find electric field

*July 17, 2011*

**Physics**

A proton is released from rest in a uniform electric field. After the proton has traveled a distance of 10.0 cm, its speed is 1.4 x 106 m/s in the positive x direction. Find the magnitude and direction of the electric field.

*July 17, 2011*

**physics**

Find the magnitude and direction of the net electrostatic force exerted on the point charge q3 in the figure below, where q = +2.5 μC and d = 28 cm. The picture is of a square. q1=+q, q2=-2q, q3=-3q, q4=-4

*July 17, 2011*

**physics**

Find the magnitude and direction of the net electrostatic force exerted on the point charge q3 in the figure below, where q = +2.5 μC and d = 28 cm. The picture is of a square. q1=+q, q2=-2q, q3=-3q, q4=-4

*July 17, 2011*

**Physics**

Ok that makes much more sense. Thank you for your help!

*July 15, 2011*

**Physics**

I don't understand what you're trying to say when you're saying to add. Can you elaborate more?

*July 15, 2011*

**Physics**

A charge q =+ 4.11 x 10 - 9 C is placed at the origin, and a second charge equal to -2q is placed on the x axis at the location x = +1.00 m. (a) Find the electric potential midway between the two charges. (b) The electric potential vanishes at some point between the charges. ...

*July 15, 2011*

**math**

1+1=2 D

*June 27, 2011*

**english / laungage**

3. In “The Celebrated Jumping Frog of Calaveras County,” Jim Smiley’s horse wins races by A) attacking all the other horses in the race. B) raising a lot of dust so the other horses can’t see where to go. C) barreling past the other horses, after having a ...

*May 24, 2011*

**microbiology**

What dilutions would have to me made (from a starting concentration of 5 x 10^8 cells per ml) to achieve a final concentration of 1 x 10^3 cells per ml?

*May 8, 2011*

**math**

A crime wave

*April 25, 2011*

**english**

how do you start a good beggining of a story plz help

*April 10, 2011*

**math**

how do you do translations

*April 9, 2011*

**College Algebra**

Angela cam comlete a project in 2 hours. it takes Jason 3 hours to complete the same project. how long will it take for them to complete the project together?

*March 30, 2011*

**science**

thankyou jai

*March 23, 2011*

**science**

julie carried out a chemical reaction using magnesium and an acid the products of the reaction were magnesium chloride and hydrogen. julie collected a test tube of the hydrogen. describe what she should do to show that it was hydrogen.

*March 23, 2011*

**science**

julie carried out a chemical reaction using magnesium and an acid the products of the reaction were magnesium chloride and hydrogen. julie collected a test tube of the hydrogen. describe what she should do to show that it was hydrogen.

*March 23, 2011*

**science**

sorry theres something wrong with what has just happened

*March 23, 2011*

**science**

julie carried out a chemical reaction using magnesium and an acid the products of the reaction were magnesium chloride and hydrogen. julie collected a test tube of the hydrogen. describe what she should do to show that it was hydrogen.

*March 23, 2011*

**General**

An advertisement has the best chance for success if it: is accompanied by loud music and rapid banter. is above threshold. contains a single subliminal message. contains a grouping of words repeated below threshold.

*March 19, 2011*

**Psychology**

Which one of the following statements about the gate-control theory is true? Pain impulses create a gate leading to the brain. The brain is capable of generating pain on its own. The gate closes when pain messages go to the brain. Damage to small nerve fibers lets pain through...

*March 19, 2011*

**Psychology**

The "face module," located in the right temporal lobe of the brain, explains why: the cells fire when a dog lover looks at pictures of show dogs. infants are not afraid to go to strangers. ganglion cells in this area respond to simple features. we need only the right...

*March 19, 2011*

**Chemistry**

EEG, PET, and TMS are all: (Points: 5) laboratory observations that introduce experimenter bias into the study. descriptive methods for studying the brain. standardized methods for studying the brain. experimentally controlled technologies for brain-wave analysis. I think it ...

*March 17, 2011*

**Science**

The brain can be studied by using: (Points: 5) electrical, biochemical, and magnetic means. radio frequencies, computers, and neurotransmission. neurotransmitting, electrical, and biochemical means. biochemical, neurotransmitting, and magnetic means. i think it is C but not sure

*March 17, 2011*

**general**

A tragedy hits a small town. The elementary school explodes into flames trapping several classes of second graders. Because the volunteer fire department will take too long to get there, teachers and classified staff remove all the children to safety without considering the ...

*March 17, 2011*

**science**

rosie tried to use a maganet to stick a memo on to her mirror it would'nt stick. explain why!

*March 17, 2011*

**Psychology**

Which one of the following statements about intelligence is the most accurate? IQ is a valid measurement, and environmental factors do not change mental ability. Intelligence is mostly genetic, has the most variability between groups, and is reliable regardless of the ...

*March 16, 2011*

**maths**

can you show me how to do it

*March 16, 2011*

**maths**

please help me

*March 16, 2011*

**maths**

shane wants to paint the outside of his house, the area to be painted is 217m2. five litres of paint will cover an area of 62m2. how many litres of paint will shane need to paint the outside of his house!

*March 16, 2011*

**maths**

thanks

*March 15, 2011*

**maths**

899

*March 15, 2011*

**maths**

895

*March 15, 2011*

**maths**

1899

*March 15, 2011*

**maths**

sorry and the following week the number of visitors were 900 to the nearest 100 what is the largest number of visitors that could have visited the leisure centre that week

*March 15, 2011*

**maths**

thanks very much

*March 15, 2011*

**maths**

a leisure centre recordsthe number of visitors each week in one particular week there were 1372 visitoros the following week the number of visitors was 900 to the nearest hundred! what is the smallest number of visitors that could have visited the leisure centre that week?

*March 15, 2011*

**Intro to psychlogy**

that is the wrong answer i think i need some help

*March 14, 2011*

**Intro to psychlogy**

Thank you i am thinking the answer is A

*March 14, 2011*

**Intro to psychlogy**

Which one of the following statements about intelligence is the most accurate? IQ is a valid measurement, and environmental factors do not change mental ability. Intelligence is mostly genetic, has the most variability between groups, and is reliable regardless of the ...

*March 14, 2011*

**Intro to Psychology**

B is the correct answer

*March 14, 2011*

**Intro to Psychology**

ok is it C! This is a tricky question...

*March 14, 2011*

**Intro to Psychology**

Genetics and what we inherit from our biological parents play a significant role in our intelligence level. In fact, researchers have found that: adopted children are more similar in IQ to their adoptive parents than to their birth parents. identical twins raised apart are ...

*March 14, 2011*

**Intro to Psychlogy**

One of the best ways to compute heritability is to compare: adopted children compared to adopted siblings. blood relatives who live in the same area. fraternal twins reared in different environments. identical twins reared in different environments. please help i think it is D

*March 14, 2011*

**Psychology**

The sentences, "Lee gave the ball to Lynne" and "Lynne received the ball from Lee," have the same: surface structure. syntax. surface and deep structures. deep structure. I am going for C Not Sure

*March 14, 2011*

**Psychology**

Random assignment can be described as a research method: used to balance the independent and dependent variables. no longer used because of its unpredictability. increasing the likelihood that the experimental group and control group will be different. used to balance the ...

*March 14, 2011*

**Psychology**

An experimenter is studying how time spent on a cell phone affects people's ability to drive safely. Driving the car is the: dependent variable. coefficient of correlation. independent variable. operational condition. I think the answer is A but i am not sure

*March 14, 2011*

**maths**

sorry how many minutes will it take 8 monkeys

*March 6, 2011*

**maths**

if it takes 1 monkey to eat a banana in 1 minute how long will it take 8 monkeys to eat 8 bananas

*March 6, 2011*

**english**

thank you so much i apperciate that

*March 4, 2011*

**english**

thanks how are animals treated nicely

*March 4, 2011*

**english**

please help

*March 4, 2011*

**english**

can you tell me your views on how people treat animals for example keeping animals as pets please help im stuck

*March 4, 2011*

**French HELP**

write instead of 15 write quanze all spelling is fine

*March 4, 2011*

**science**

sulphuric acid + sliver = hydrochloric acid + calcium = not sure on how to do these

*March 2, 2011*

**maths**

doesnt matter

*February 28, 2011*

**maths**

what i don't get you how do you get 45 percent

*February 28, 2011*

**maths**

how do you get 45 percent of something urgent thankyou

*February 28, 2011*

**maths**

its ok i got the answer

*February 24, 2011*

**maths**

what sides do i double

*February 24, 2011*

**maths**

i don't fully understand

*February 24, 2011*

**maths**

is it

*February 24, 2011*

**maths**

is it 0 or 2

*February 24, 2011*

**maths**

but im not sure can you show me you don't need to tell me the answer

*February 24, 2011*

**maths**

sorry can i ask you one more question related to that one if y=-3 what is the value of x

*February 24, 2011*

**maths**

thankyou so much i find them very hard

*February 24, 2011*

**maths**

please

*February 24, 2011*

**maths**

this is urgent y=1/2x - 1 if x equals 4 what does why equal? please help

*February 24, 2011*

**english**

please help if you don't know its fine!

*February 18, 2011*

**english**

can you please tell me a bit about mamma mia the musical /movie?

*February 18, 2011*

**maths**

how do you draw translations of rotation of 90 degrees im not sure?

*February 16, 2011*

**maths**

i know i didn't relaise

*February 16, 2011*

**maths**

calculate the area 1.76 and 1.76 writr your 2 decimal answer to the two decimal places. i'm not sure if its 3.0976 and to the two decimal place its 3.10 could someone tell me if im right. thankyou

*February 16, 2011*

**science/chemistry**

writeacher can you please tell what this is about

*February 16, 2011*