Sunday

April 20, 2014

April 20, 2014

Total # Posts: 3,754

**science (force and motion)**

explain how accceleration can be slowing down. Calculate the impact force of a 50 kg object travelling at 100km/hr? -> i was wondering if you can answer directly and not through hyperlinks... thank you

**science**

How does mutation contribute to variation in a species? Evolution is the theory and natural selection is the process. Explain what this might mean. How can environmental factors determine a feature in a species?

**physics**

An electron (m0 = 9.11 10-31 kg) enters a uniform magnetic field B = 1.7 T, and moves perpendicular to the field lines with a speed v = 0.93c. What is the radius of curvature of its path?

**Physics**

Sorry i mean k=58 and the values i substitued into the eqn were C=58*(8.854*10^-12)*(3.5m*4.9m)/0.013m which gave me C=6.77*10^-7F

**Physics**

A capacitor has two overlapping plates of width 4.9 m and length 3.5 m separated by 1.3 cm. A dielectric of dielectric constant ê = 58.0 fills the space between the plates. If this capacitor is connected to a 35 V battery, how much energy is stored in the capacitor when ...

**MTH/208**

The population of the US is about 3.02 X 10^8, and the average American uses about 1.5x10^2 gallons of water per day. Could this lake supply the American population with water for 1 day?

**Trig**

171505.3

**physics**

a wheel turning with angular speed of 30 rps is brought to rest with constant acceleration. It turns 60 revolutions before it stops.

**science**

Hachure lines, or lines with teeth, describe _____. a) volcanos b) mountains c) depressions d) discontinuities

**trig**

What is the shortest possible length of a triangle side facing an angle of 20 degrees, if one of the other sides is 5? (answer should be a decimal number, correct within 0.001)

**math**

acrimewave

**math**

4(x) + pi(x)=60 how do i solve this?

**math**

A florist uses wire frames to support flower arrangements displayed at weddings. Each frame is constructed from a wire length 9ft long that is cut into six pieces. the vertical edges of the frame consist of four of the pieces of wire that are each 12 inches long. one of the re...

**precalculus**

What is the component form of vector v given a magnitude of 9 and an angle of theta= 90 degrees with positive x axis. sorry I'm writing this on my phone and I don't have the symbols for vector, theta, or degree.

**Economics**

In long-run equilibrium there will be no economic profit in a purely competitive static economy because: A) barriers to entry will prevent profit from arising B) there will be no uncertainty, no innovations, and no monopoly C) there will be no need for professional managers an...

**HCS/490**

okay thank you for clearing that up!!!! :)

**HCS/490**

so its not right for them to screen because even if you smoke, have a disease or are overweight then you can still do the job they should not base your preformance on you health conditions unless they get in the way of the job?

**HCS/490**

Do employers have the right to screen employees or potential employees to learn if they are smokers, have chronic disease, or are overweight? Why?

**Math**

The perimeter of rectangle P is 12 feet. The perimeter of rectangle Q is 18 feet. Both rectangles have the same area.Find the area and dimensoin of each rectangle.

**American lIt project**

Thanks:) I am looking. Are there any songs that actually have lyrics about times in the 50s?

**American lIt project**

Do you guys know of any songs or poems that have to do with America in the 1950s? Thanks

**Business Law**

Benner imports Inc, an automobile dealership, placed an advertisemet in the chicago sun times to sell a station wagon. The advertisement displayed a price that was $700 lower than the dealership had indicated in the advertising copy sent to the newspaper. A customer want...

**American Lit project help (Literature needed)**

Thanks, but Im still not finding ones that I can read online. They all are just the cover or you have to buy them. Any other suggestions? Do you think there would be more inserts about food in the homes and gardens?

**American Lit project help (Literature needed)**

So for my amer lit class I am doing a project on American foods in the 1950s and I need a piece of literature to write my essay on. It has to be a short peice not a novel. I really wanted for my literature to be a magazine from the 1950s. Like better homes and garden cooking o...

**biology**

Photosynthetic electron transport, like cellular respiration electron transport, is a series of redox reactions. True False I think it is true.

**More Solutions Chem**

You have 315.00g of sodium hydroxide. How many liters of dangerous 12.0M sulfuric acid (H2SO4) can you neutralize with your supply? __NaOH(s) +__ H2SO4(aq) -> __Na2SO4 + __H2O(l) I know the answer is .43, but I don't know how to get there. Thanks!

**Solutions Chem**

7) You have a 2.5M solution of Silver Nitrate. It contains 450mL of solution. How many grams of silver would you be able to extract? Cu (s) + 2AgNO3 (aq) -> 2Ag (s) + Cu (NO3)2 (aq) I've gotten this much: M=mol/L 2.5=mol/.45 mol= 2.5*.45 mol=1.125 Silver Nitrate= (Ag=10...

**Math**

My couch potato friend enjoys sitting in front of the TV and grabbing handfuls of 4 chocolates at random from his snack jar. Unbeknownst to him, I have replaced one of the 26 chocolates in his jar with a cashew. (He hates cashews with a passion.) How many possible outcomes ar...

**allied health part 2-21**

which of the following statements about risk management is true? a. risk management is unique to the health care industry b. risk management is controlled and managed by hipaa regulations. c. risk management is concerned with reducing exposure to legal liability d. risk manage...

**allied health part2-19**

of the following types of information, which one has the strictest rules regarding the release of informationg? a. substance abuse information b. mental illness information c. genetic information d. adoption information

**allied health part 2-17**

if an institutional review board is involved in a request for information, the information is likely sought by a a. health care facility b. researcher c. court d. substance abuse center

**allied health part 2**

which one of the following activities is considered part of health care operations? a. reviewing the competency of health care workers b. administering a stress test c.giving a patient her prescribed medication d.recording a patient's blodd pressure and temperature

**DrBob222**

You just answered my previous half-life question, and I was curious how to find the value of k. You said that k = 0.693/t1/2 , but how do you evaluate t sub1/2?

**Half-Lifes**

Great! But, so that I can understand it in the future, can you tell me what the value of k is a little more clearly? how do you do a subscript of 1/2?

**Half-Lifes**

How much of a 6gram sample of silver-105m would remain after 4 minutes? Half life=7.2 minutes

**Chemistry**

A 0.225g sample of a weak monoprotic acid requires 37.50 mL of 0.100 M NaOH solution to reach the equivalence point. What is the molar mass of the acid?

**CHEMISTRY**

HOW YOU PREPARE 30.0ML OF 0.800M HNO3 FROM A STOCK SOLUTION OF 4.OOM HNO3? WHAT SOLUTION IN ML OF THE 4.OOM HNO3 SOLUTION WILL YOU NEED?

**Chemistry**

Which of the following combinations will make a good buffer solution? 0.05 M H2CO3 + 0.05 M KHCO3 0.5 M HI + 0.5 M CsI 0.3 M NH4Cl 0.3 M NH4Cl + 0.1 M NH3 0.3 M NH4Cl + 0.1 M HCl thanks

**physics**

On a catapult, what determines how far a missile moves?

**5th grade Math**

Explain how you can find the product of 5 and 3/4.

**algebra**

Or rather, what would I do to find all the zeros for this equation?

**algebra**

p(x)=x^3+2x^2-3x+20 one of this functions zeros is -4 When using synthetic division to find all the zeros of a polynomial function, would you plug in 4 or -4 into the actual equation?

**math**

It's all a matter of knowing the basic distance and midpoint formulas. The distance between two points with coordinates (x1,y1) and (x2,y2) is given by d=the square root of (x2-x1)^2 + (y2-y1)^2 If a line segment has endpoints at (x1,y1) and (x2,y2) the the midpoint of thi...

**Math**

14. Parks A survey of 300 parks showed the following. 15 had only camping. 20 had only hiking trails. 35 had only picnicking. 185 had camping. 140 had camping and hiking trails. 125 had camping and picnicking. 210 had hiking trails. Find the number of parks that a) had at leas...

**biology**

thank you

**biology**

Explain how alignment of chromosomes on the meta phase plate differs in mitosis, meiosis I, and meiosis II. Why are these arrangements important? Can you tell me where zi can find this information? I don't see it in my text. Thank you

**algebra**

The question is: find f(x+h) for each and the function given is f(x)=x^3+x after you turn it into f(x+h)=(x+h)^3+(x+h) how do you multiply out the cube?

**Chemistry**

In this equilibrium H2(g) + I2(g) <-> 2 HI(g). What is happening on the molecular level? Like given the right energy when a H2 molecule hits a I2, is electron transfered and they just stick together? Or do they have to be in the right position? Who transfers (or is it sh...

**chemistry**

Assuming a temperature of 37 C and 1 atm pressure, how many mol/min of CO2 is this?

**chemistry**

what mass of (NH4)SO4 is required to prepare 500 cm3 of M/4 solution?

**chem**

where does the 4.70 come from?

**Titrations (chem)**

In the titration of a 0.101 M sodium hydroxide solution, 19.02 mL of 0.130 M sulfuric acid solution was required to neutralize the sodium hydroxide in reactions that replace both hydrogen ions of the sulfuric acid. Calculate the number of milliliters of sodium hydroxide soluti...

**science**

which is the correct balanced equation for a given titration process, (a) or (b)? a) 6H+ + 2MnO4- + 3H2O2 -> 4O2 + 2Mn2+ + 6H2O b) 6H+ + 2MnO4- + 5H2O2 -> 5O2 + 2Mn2+ + 8H2O Process: Make a solution in a 100mL volumetric flask using 1g of NaBO3*4H2O, 20mL of 1M H2SO4, an...

**chem**

thank you so much. you're my hero =)

**chem**

which is the correct balanced equation for a given titration process, (a) or (b)? a) 6H+ + 2MnO4- + 3H2O2 -> 4O2 + 2Mn2+ + 6H2O b) 6H+ + 2MnO4- + 5H2O2 -> 5O2 + 2Mn2+ + 8H2O Process: Make a solution in a 100mL volumetric flask using 1g of NaBO3*4H2O, 20mL of 1m H2SO4, an...

**chemistry**

How would you make 250 ml of a .51M calcium hydroxide solution?

**Math**

I need this too

**Chemistry**

If you have constant volume of gas how can you determine the number of moles it has? what equation do you use if your not given the constant volume value?

**physics**

A volume Vi = 23.1 L of air at temperature T = 21 ¢XC is compressed at constant temperature to a volume Vf = 7.7 L. The relative humidity of the air before compression is R = 56.4 %. Saturated water vapour in air at this temperature has a vapour pressure vp = 2.5 kPa and ...

**chemistry**

Consider the titration of 88.0 mL of 0.150 M Ba(OH)2 by 0.600 M HCl. Calculate the pH of the resulting solution after the following volumes of HCl have been added. 0.0 ml 12 ml 31 ml 44 ml 88 ml

**physics help**

At a certain location, the solar power per unit area reaching the Earth's surface is 180 W/m2 averaged over a 24-hour day. Suppose you live in a solar powered house whose average power requirement is 3.2 kW. At what rate must solar energy reach your solar panels if your so...

**French**

omg i know. i have an A- in my french class. i dont study. now i have a final and i really have to study. i cant find a practice tet anywhere. it annoys me sooooooo much. im getting a tutor next year.

**physics **

At a certain location, the solar power per unit area reaching the Earth's surface is 180 W/m2 averaged over a 24-hour day. Suppose you live in a solar powered house whose average power requirement is 3.2 kW. At what rate must solar energy reach your solar panels if your so...

**algebra**

help solving the equation .8x+2 less than or equal 62-1

**physical science**

in a balanced chemical equation the mass of the reactants is equal to the? a. atoms in a molecule b. atomic mass of the elements c. volume of the reactants d. mass of the products

**statistics**

A business uses a 7-point scale about satisfaction with the services it provides to clients. The ratings are normally distributed with a mean of 4.8 and a standard deviation of .5. What percentage of clients rate their satisfaction 1) Above 5? 2) Above 6? 3) Above 4? 4) Below ...

**Dynamics**

During a high-speed chase, a 2400-lb sports car traveling at a speed of 100 mi/h just loses contact with the road as it reaches the crest A of a hill. a) Determine the radius of curvature r of the vertical profile of the road at A. b) Using the value of r found in a part a), d...

**English**

thank you

**English**

o i read it wrong. so it would be your

**English**

i have found your coat. would you say we appreciate you not having smoked near the entrance?

**English**

smoking

**English**

It has something to do with gerunds. but im sure how it fits. you normally change the subject by adding an 's.

**English**

Identify any improper verbal usage in each sentence. Each sentence has an error. Write the correct form of the verb. We appreciate you not smoking near the building entrance.

**math**

2sin^2x+3sinx+1

**science-chem- theory questions**

you're so wonderful! you're right, i'll use the equations from now on. thank you for enlightening me!

**science-chem- theory questions**

please, help me.. i think i know the answers, but i just want to make sure! i'd love your feed back :) 1) an air bubble is trapped in the tip of a buret before a titration. during the titration, the bubble is passed from the buret tip. will the reported volume of titrant u...

**Algebra I**

A sample of radioactive material weighing 45 grams has a decay rate of 4.25% each day. The equation y = 45(2.7)–0.0425t can be used to find the amount of material that still remains, where t is the number of days that have passed. Approximately what is the amount of mater...

**Physics**

Search: The figure shows three crates being pushed over a concrete floor by a horizontal force of F magnitude 440 N. The masses of the crates are m1 = 30.0 kg, m2 = 10.0 kg, and m3 = 20.0 kg. The coefficient of kinetic friction between the floor and each of the crates ...

**Physics**

thanks for the help but i have worked it out but for the forces on the links it is F=m(a+g)+ F(previous link)

**Physics**

In the figure, a chain consisting of five links, each of mass 0.100 kg, is lifted vertically with constant acceleration of magnitude a = 2.50 m/s2. Find the magnitudes of (a) the force on link 1 from link 2, (b) the force on link 2 from link 3, (c) the force on link 3 from lin...

**algebra 1**

I don't understand how to divide monomials with negative (or positive, for that matter) powers. Please help!!!!

**english**

Both editors in chief asked for leave of absences at the same time. would the correct form be.... leaves?

**science**

When can an object be considered weightless but still have a gravitational force on it?

**physics**

when can an object have its original mass but zero weight?

**english**

a friend has a new baby and has invited you to her house . write a letter accepting the invitation . ask for two questions that you need before the vist .

**algebra**

You are standing 14 feet from the edge of a cylindrical water tank and 26 feet from a point of tangency. The tank is 10 feet tall. What is the volume of the tank in cubic feet?

**physics**

A car travels between the 100 meter and 250 meter highway markers in 10 second. The average speed of the car during this interval is...

**college physics**

A cue ball initially moving at 4.3m/s strikes a stationary eight ball of the same size and mass. After the collision, the cue ball’s final speed is 2.3 m/s at angle 1 with respect to it's original line of motion. The 8 ball moves with unknown speed at an angle 2 unkno...

**Algebra**

an investment of 72,000 was made by a business club. the investment was split into three parts and lasted for one year. the first part of the investment earned 8% interest. the second 6% and the third 9%. total interest from the investments was $5640. the interest from the fir...

**physics**

It has been proposed to use large inductors as energy storage devices. How much electrical energy is converted to light and thermal energy by a light bulb with a power of 195 W in one day? If the amount of energy calculated in part (a) is stored in an inductor in which the cur...

**Food Analysis **

1.If 0.5l of 5M solution of CU(NO3) is diluted to a volume of 0.80l by adding water, what is the molarity of the resulting diluted solution? 2.How many ml of water will be required to dilute 11ml of 0.45Macid solution to a molarity of 0.1M? 3.Calculate the weight CuSO4.5H2O re...

**Calculus II**

Consider the solid obtained by rotating the region bounded by the given curves about the y-axis. y = ln x, y = 4, y = 5, x = 0 Find the volume V of this solid. Help!!! Thank you in advance :(

**Science**

best way to stufy for science

**algebra**

How would one write the equation of a parabola whose directrix is y=-6 and location of the focus is (-3,2)

**math**

what is the deistance traveled on a fiel trip is it a centimeter or millimeter or kilometer.

**english**

haha thank you:)

**english**

So if you were to break this quote down how would you do it?

**english**

how would you say Clara Bow, felt about men? There's one quote where she says: The more I see of men, the more I like dogs.

**statistics**

refer to the schools data set in appendix m which refers to the 94 school districts in northwest Ohio. divide the school districts into two groups. include all schools with less than 2000 students in one group and the other being the ones with more than 2000. Compute the mean ...

**English**

ok

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