Posts by Christy

Total # Posts: 332

science
Two copper globes are floating in space with a charge of -10 and charge of +16. They come together then go back apart. What are the resulting charges

physics
four point charges on corners of a square.. top left -1, top right +2, bottom left -2, bottom right -1 ... object in middle is -1 ... which direction will that object move? up, down, left, or right (no angles)

french
complete each sentence with appropriate expressions to make it correct and meaningful. 1. Ces enfants n'aiment pas ............... au village. 2. Led infirmiers de cet hopital ........... 3. Nous n'etudians ............... bibliotheque. 4. Oulest-ce que vous...

Chemistry
If you have a properly adjusted hot flame, which is pale blue with three distinct comes, what is observed if the GAS CONTROL valve is slightly closed versus what's observed if the AIR CONTROL valve is slightly closed? Please Explain.

Math
How many 1/8 liter glasses of juice can you pour from a 1/2 liter bottle of juice?

physics
A copper of mass 400g is heated until it's temperature becomes 250degree celcius. It is dropped into water weighing 200g at 50 degree celcius.calculate the mass of water vapour produced.

Math
Out of a group of 60 students, 14 students walk to school. What percent of the group of students walk to school.

Math
Kevin found that 15% of the 40 students in his history class said that history was their favorite subject. How many students like history the best?

Math
You food costs are $1700. Your total food sales are $8500. What percent of your food sales do the food costs represent?

Math
Calculate 56% of 880 kg?

Math
The chef has 300 pounds of strip sheep. The trim loss on the strip sheep is 40% and the cooking loss is 60% of the trimmed weight. How many pounds of trimmed cooked strip sheep will the chef have left to serve to his customers?

Math
A serving of ice cream contains 5000 calories. 200 calories come from fat. What percent of the total calories come from fat?

Math
Find each unit rate Julio walks 3 1/2miles in 1 1/4hours

Mathxxx!!!
ytttttttttttf

Chemistry
Explain the laboratory preparation of one Litre of 1.3M formic acid buffer of pH 3.9 from solid sodium formate (molecular weight =68) and formic acid liquid 30% pure (Density of formic acid = 1.029g/ml, pKa = 3.75)

Physics
A startled armadillo leaps upward, rising 0.644 m in 0.170 s. a. What is its initial speed? b. What is its speed at this height? c. How much higher does it go? For a. 0 is not the answer and neither is 3.79 m/s (product of .644m*.170s)

Chem
a gas has a volumn of 36.0 L and a pressure of 750 torr when the temperature is 10 degrees celsius. what is the pressure if the volume changes to 78 degrees celsius if the amount of gas stays the same?

math
Jo Lee wants to hang three 3-inch by 5-inch prints on her wall. She wants to line them up vertically with an inch between each print. What is the minimum wall space that Jo Lee must have? Please explain!!!!

Math
At the beginning of the summer Molly decided to add a little money into her savings account every week. After seven weeks her account had $175. At the end of 15 weeks her account had $375. Assumed that she put the same amount of money into her savings account every week and ...

physics
solid gold statue with mass of 7.55kg, weight of 74.0N, and disperses 680 cubic meters of water when immersed. i need to find the density. but im unsure how to find the volume first to put it into the formula?

social studies
Your the best couldn't done it without you!

math
The scale on a map i 1cm to 4km What does 4cm on the map represent ?

psychology
51. Given the changes in sex-offender laws, the emphasis of concern appears to be swinging toward: A) protecting children. B) sympathizing with sex offenders. C) white Americans. D) states' rights

psychology
A?

psychology
C?

psychology
Which of the following is the MOST accurate conclusion one can draw about the mental health field? A) Mental health professionals are gaining respect in society. B) What mental health professionals know and can do outweighs what they do not know and cannot do. C) There is more...

psychology
thank you Ms.sue!

psychology
Dr. Comer points out risks of adolescence, such as alcoholism, drug abuse, and teen pregnancy A) are more severe in lower socioeconomic groups B) are virtually nonexistent in middle-income children C) exist for all children, regardless of income level D) are less severe today ...

psychology
Dr. Comer points out risks of adolescence, such as alcoholism, drug abuse, and teen pregnancy

Math.
T -shirts for first prize winners in the games cost $23.40. This was $8.77 less than their cost one year ago. What was the cost of the T-shirts one year ago?

chemistry
I do not know

math
Yes

math
I have that same question but every time I try to put the expression it says it's wrong can you please tell me the expression you used??

SCI207
Net- zero refers to a building or installation that produces less energy less than consumes, considered to be energy reliant. True or false

physics
tan(theta)= 4/15 theta = 14.93 deg 2Tsin 14.93 = 100lb T = 194.07lbs.

pre-calculus
thank you :)

pre-calculus
Express the edge length of a cube as a function of the cube's diagonal length d. Then express the surface area and volume of the cube as a function of the diagonal length.

horizon
What part of speech is the italicized word in the sentence below? What part of speech is the italicized word in the sentence below? Four score and seven years ago, our forefathers brought forth UPON this continent a new nation conceived in liberty and dedicated to the ...

Trig
Use sum and difference identitites to find the exact value of co 15 degrees

math
number N of state and federal inmates in millions during year x where x >=2002 can be approximated by the following formula N=0.04x-79.02. determine the year in which there were 1.1 million inmates

Child day care management
When playing outside, children should wear protective clothing and play in shaded areas to A. avoid radiation from sunlight. B. avoid being stung or bitten by insects. C. prevent attacks of scabies. D. stay cool and maintain psychological equilibrium.

Math
The number of 5th grade students who volunteered to help clean up the park this was 5 less than twice as many last year If 39 5th graders volunteered to help clean up the park this year how many volunteered last year

geometry
Pqrs -jklm with a scale factor of 4:3qr-8cm what is the value of kl

penketh high
Laughing Gas, N2O, is made by the careful decomposition of ammonium nitrate NH4NO3 (s) = N20 (g) + 2H20 (g) How many grams of N2O can you obtain? How many dm3 of stream would also be produced?

Physics
Racing on a flat track, a car going 32 m/s rounds a curve 56 m in radius. What is the force of friction needed for the car to round the curve without slipping?

Math
Reasonables: I am between 24 and 34 what number am I

psychlogy
what might be the advantages of using the archival methods?

Math
It is greater than 43 and less than 52 if you add the digits the sum 8 right the number word

Math
It is greater than 43 and less than 52 if you add the digits the sum is 8 write the number word

Algorithms
Help Please: I need some help and guidance to solving this problem Week 4 CheckPoint – Repetition and Decision Control Structures In one of the week 3 discussion questions we discussed the algorithm that would be required to make a peanut butter sandwich. In this ...

HEALTH
Its A

health
Its not D

health
D is correct

health
one month

health
B is correct

health
The answer is D , This is a no brainer lol.. weve always been taught to eat breakfast or exleast I have in my youth ears for an increase in energry

Psychology And Your Life
I am trying to construct a sentence using Maslow's theory on Physiological Needs. It can be personal or hypothetical.

programming in c++
I need some help and guidance to solve this problem. Week 4 CheckPoint – Repetition and Decision Control Structures In one of the week 3 discussion questions we discussed the algorithm that would be required to make a peanut butter sandwich. In this CheckPoint you will ...

vulindlela
How smoking is a human factor that may cause ill health

physics
Two pellets, each with a charge of 0.80 microcoulomb (8.0×10−7 C), are located 4.0 cm (4.0×10−2 m) apart. Find the electric force between them, which I solved for 3.6 N. I am stuck on the next part: What would be the mass of an object that would ...

physics
Two point charges are separated by 6.4 cm. The attractive force between them is 10 N. Suppose that the charges attracting each other have equal magnitude. Rearrange Coulomb's law and find the magnitude of each charge

physics
last one before I got to go to work Which of these cities has the smallest incidence of cosmic rays? A) All about the same.B) New York City.C) Mexico City.D) Singapore.E) Anchorage.

physics
all of these

physics
The relationship between magnetic force and magnetic pole strength is similar to the relationship between which of the following?. A) force, mass, and distance as in Newton's law of gravity.B) All of these.C) current, voltage, and resistance as in Ohm's law.D) Two of ...

physics
is the force on a point charge due to electromagnetic fields. thanks!!

physics
the section in the chapter states form what I am getting it, is rotation, force and a states voltage. It is no very clear

physics
An electric motor best makes use of the fact that on a current-carrying wire in a magnetic field there exists which of these?. A) electromagnetic energy to be tapped.B) rotation.C) All of these.D) a force.E) a changing voltage. Is this roation or all of these???

physics
An electric motor best makes use of the fact that on a current-carrying wire in a magnetic field there exists which of these?. A) electromagnetic energy to be tapped.B) rotation.C) All of these.D) a force.E) a changing voltage. Is this roation or all of these

physics
last one for now..this is nowhere in my text !! Which of these cities has the smallest incidence of cosmic rays? A) All about the same.B) New York City.C) Mexico City.D) Singapore.E) Anchorage.

physics
last one for now..this is nowhere in my text or when I google it!! Which of these cities has the smallest incidence of cosmic rays? A) All about the same.B) New York City.C) Mexico City.D) Singapore.E) Anchorage.

physics
An electric motor best makes use of the fact that on a current-carrying wire in a magnetic field there exists which of these?. A) electromagnetic energy to be tapped.B) rotation.C) All of these.D) a force.E) a changing voltage. I say it is roation or all of these

physics
This is what I thought too (found in my textbook) it is teling me it is wrong!!

physics
Which of these is the same in identical branches of a parallel circuit? A) All of these.B) Voltage.C) Current.D) None of theseE) Resistance. again my textbook says that voltage is the one that the paths are the same,is it all of these?

physics
Electric current is a flow of electric charge that moves due to an electric pressure is called what?. A) wattage.B) voltage.C) All of these to some degree.D) None of these.E) amperage. I chose ampere, this is what my textbook tells me and I got it wrong

physics
The relationship between magnetic force and magnetic pole strength is similar to the relationship between which of the following?. A) force, mass, and distance as in Newton's law of gravity.B) All of these.C) current, voltage, and resistance as in Ohm's law.D) Two of ...

physics
The key ingredient in anything magnetic is which of the following?. A) moving electric charge.B) magnetic domains that are aligned C) pairs of magnetic poles.D) the surrounding magnetic field.E) magnetic polarization.

physics
The lowest resistance in a common electric circuit containing a common lamp is in which of these A) connecting wires.B) Both of these.C) Neither of these.D) lamp filament. I would say lamp filament is this correct?

physics
At a certain location, the solar power per unit area reaching Earth's surface is 200 W/m^2, averaged over a 24-hour day.If the average power requirement in your home is 2.8 kW and you can convert solar power to electric power with 8.0 % efficiency, how large a collector ...

physics
A 40g chunk of 90 degree C iron is dropped into a cavity in a very large block of ice at 0 degree C.Find what mass of ice will melt. (The specific heat capacity of iron is 0.11 cal/g degree C)

physics
Consider 60 g of hot water at 70 degree C poured into a cavity in a very large block of ice at 0 degree C. A)What will be the final temperature of the water in the cavity? B)Find what mass of ice must melt in order to cool the hot water down to this temperature

physics
Find the mass of 0 degree C ice that 15 g of 100 degree Csteam will completely melt.

physics
The specific heat capacity of ice is about 0.5 cal/g degree C A)Supposing that it remains at that value all the way to absolute zero, calculate the number of calories it would take to change a 0.50g ice cube at absolute zero (-273 degree C}) to 0.50 g of boiling water. B)How ...

physics
Water with a mass of 0.500 kg at 15.0 degree C is mixed with 0.800 kg of water at 35.0 degree C. What is the final temperature T_f of the mixture?

physics
In lab you submerge 100 g of 41 degree Celcius iron nails in 100 g of 25 degree Celcius water (the specific heat of iron is 0.12 cal/g degrees Celcius) A)Equate the heat gained by the water to the heat lost by the nails and find the final temperature of the water. B)Your lab ...

physics
At a certain location, the solar power per unit area reaching Earth's surface is 200 W/m^2, averaged over a 24-hour day.If the average power requirement in your home is 2.8 kW and you can convert solar power to electric power with 8.0 % efficiency, how large a collector ...

physics
In lab, Will burns a 0.6 g peanut beneath 48 g of water, which increases in temperature from 22 degree C to 55 degree C. The amount of heat absorbed by the water can be found with the equation Q =cm \Delta T, where Q is the amount of heat, c the specific heat of water, m the ...

physics
thanks so much!!!!!

physics
Steel expands 11 parts in a million for each 1 degree C change. Consider a 40,000 km steel pipe that forms a ring to fit snugly all around the circumference of the Earth. Suppose people along its length breathe on it so as to raise its temperature 0.80 degree C. The pipe gets...

physics
never mind......took another 50 % ran out of time, Got the 1st part but not the 2nd ughhhh

physics
On a perfect fall day, you are hovering at low altitude in a hot-air balloon, accelerated neither upward nor downward. The total weight of the balloon, including its load and the hot air in it, is 24000 N. Find the weight of the displaced air. !!I got this: it is 2.4×10...

physics
Help, the last equation given to me on previous question was incorrect and I took a 0 % on my assignment !!! A mountain-climber friend with a mass of 82 kg ponders the idea of attaching a helium-filled balloon to himself to effectively reduce his weight by 25% when he climbs...

physics
Radioactive decay of granite and other rocks in Earth's interior provides sufficient energy to keep the interior molten, to heat lava, and to provide warmth to natural hot springs. This is due to the average release of about 0.03 J per kilogram each year.Find an increase ...

physics
Estimate the buoyant force that air exerts on you. (To do this, you can estimate your volume by knowing your weight and by assuming that your weight density is a bit less than that of water.) Assume that your weight is a about 1000 N, for example.

physics
Steel expands 11 parts in a million for each 1 degree C change. Consider a 40,000 km steel pipe that forms a ring to fit snugly all around the circumference of the Earth. Suppose people along its length breathe on it so as to raise its temperature 0.80 degree C. The pipe gets ...

physics
A mountain-climber friend with a mass of 82 kg ponders the idea of attaching a helium-filled balloon to himself to effectively reduce his weight by 25% when he climbs. He wonders what the approximate size of such a balloon would be. Hearing of your physics skills, he asks you...

physics
In lab, Will burns a 0.6 g peanut beneath 48 g of water, which increases in temperature from 22 degree C to 55 degree C. The amount of heat absorbed by the water can be found with the equation Q =cm \Delta T, where Q is the amount of heat, c the specific heat of water, m the ...

physics
this is incorrect and I got a 0% on the assignment

physics
Consider an airplane with a total wing surface of 90 m^2. At a certain speed the difference in air pressure below and above the wings is 4.2% of atmospheric pressure. Find the lift on the airplane.

math-probability
I have to do a math project using probability. I thought I might use Go Fish cards but I am not what kind of questions to ask can you help please?

Probability
A card is drawn from a standard deck of cards. Find P(A U B) in each part. A= {getting a heart}, B= {getting an even number} A= {getting a club}, B= {getting a red card} A= {getting an ace}, B= getting a black card} A= {getting a prime}, B= {getting a diamond} Can you please ...

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