Friday

April 18, 2014

April 18, 2014

Total # Posts: 332

**CHEMISTRY**

Thank you

**CHEMISTRY**

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

**CHEMISTRY**

please help

**CHEMISTRY**

how many elements in (NH4)2SO4

**chemistry ASAP**

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

**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 wh...

**math**

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

**6th**

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

**maths**

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

**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?

**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?

**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?

**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? Tha...

**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 ...

**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 (...

**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 pers...

**sciencs**

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

**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.

**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 p...

**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 wh...

**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 w...

**Physics**

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

**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.

**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

**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

**Physics**

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

**Physics**

I dont understand what you're trying to say when you're saying to add. Can you elaborate more?

**Physics**

I dont understand what you're trying to say when you're saying to add. Can you elaborate more?

**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. F...

**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 h...

**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?

**math**

A crime wave

**math**

A crime wave

**math**

A crime wave

**english **

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

**math**

how do you do translations

**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?

**science**

thankyou jai

**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.

**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.

**science**

sorry theres something wrong with what has just happened

**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.

**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.

**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...

**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...

**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 ...

**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

**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 d...

**science**

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

**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 environm...

**maths**

can you show me how to do it

**maths**

please help me

**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!

**maths**

thanks

**maths**

899

**maths**

895

**maths**

1899

**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

**maths**

thanks very much

**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?

**Intro to psychlogy**

that is the wrong answer i think i need some help

**Intro to psychlogy**

Thank you i am thinking the answer is A

**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 environ...

**Intro to Psychology**

B is the correct answer

**Intro to Psychology**

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

**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 mor...

**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

**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

**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 con...

**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

**maths**

sorry how many minutes will it take 8 monkeys

**maths**

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

**english**

thank you so much i apperciate that

**english**

thanks how are animals treated nicely

**english**

please help

**english**

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

**French HELP**

write instead of 15 write quanze all spelling is fine

**science**

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

**maths**

doesnt matter

**maths**

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

**maths**

how do you get 45 percent of something urgent thankyou

**maths**

its ok i got the answer

**maths**

what sides do i double

**maths**

i don't fully understand

**maths**

is it

**maths**

is it 0 or 2

**maths**

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

**maths**

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

**maths**

thankyou so much i find them very hard

**maths**

please

**maths**

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

**english**

please help if you dont know its fine!

**english**

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

**maths**

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

**maths **

i know i didnt relaise

**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

**science/chemistry**

writeacher can you please tell what this is about

**science/chemistry**

please hellllllp me!!

**science/chemistry**

what does these equations mean metal+water=metal hydroxide+hydrogen

**FINITE**

the probability that both balls are red are:4/8 0r 1/2

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