# Posts by Karl

Total # Posts: 100

**jkuat**

find log30 if log2=0.301 and log3=o.477

**PHYSIC**

A block displacement causs of a force in a horizontal surface is 13m and the work done by the force on the block .6 joules .

**math**

express 84 minutes as a fraction of 4 hours

**history**

Actually the correct answers are D, B, A

**history**

I believe the correct answer is C.

**history**

8:D 9:A

**Math**

Just do 5 divided by 8 and then do 24 divided by that outcome.

**try,check,and revise**

I agree with Steve.

**Social Studies**

Sorry for the late response, but your answers are correct.

**social studies { somebody please help me please**

was the answer to number 3 D(santee cooper project)?

**Social Studies**

How were the carpetbaggers able to influence freed slaves in the south? A. They gave them land and helped them start farms. B. They took advantage of their inability to read and write. C. They promised them high-paying jobs in the newly elected government. D. They set up ...

**Science**

A ball thrown vertically upward has a speed of 5.0 m/s at a height of 3.0m. The mass of the ball is 1.2 kg. Find its mechanical energy

**Stats**

I thought I was looking for a %

**Stats**

I there are 1000 numbers in a contest what is the probability you win if: - play 1 number for $1.00 - play 2 numbers for $1.00 - play 1 number for $2.00

**Pre cal**

A parallelogram has sides of lengths 7 and 4, and one angle is 55°. Find the lengths of the diagonals. (Round your answers to two decimal places. Enter your answers as a comma-separated list.)

**Math**

Sherry saved $1800 she earned at her summer job. She invested part of her money in a Treasury Bill at 5% and the balance in a Money Market fund which guaranteed a return of 10%. If she earned $165 on her investments in the first year, how much was invested at each rate?

**History**

Which of the following tools of the Archaic culture was primarily used for hunting birds and smaller prey? A. atlatls B. game nets C. bird stones D. grinding stones

**trigonometry**

A barge is being towed south at the rate 2 km/hr. A man on the deck walks from west to east at the rate 4ft/s. Find the magnitude and direction of the man's actual velocity.

**trigonometry**

A box of 200kN is placed on a smooth inclined plane 28° with the horizontal. To prevent the box from sliding down the plane, a rope is tied to it and fastened to a peg on the top of the incline as shown. Determine the pull on the string assuming that the rope is held ...

**math**

Hello, i would like to know what is the complex conjugate of : (a*c*d)×( (-e*d+i)/(1-e*c*d^2) ) Thanks for your help.

**math**

Hello, i would like to know what is the complex number of : (a*c*d)×(-e*d+i)/(1-e*c*d^2) ACDE are strictly positive real constants. I is an imaginary number. Thanks you a lot for you help.

**math**

Thanks a lot for your help . I'll visit it

**math**

Hello, I'd like to know how in developing, factoring or simplifying, we can move from: goo.gl/zZdzSs ACDE are strictly positive real constants. I is an imaginary number.

**Math**

I made a picture. goo.gl/zZdzSs

**Math**

Hello, I'd like to know how in developing, factoring or simplifying, we can move from: A + ( (1 / ( (1 / ICD) + IED) ) to: ACD *( ( - ED + I ) / (1 - ECD^2 ) ) ACDE are strictly positive real constants. I is an imaginary number.

**math**

Hello, I'd like to know how in developing, factoring or simplifying, we can move from: A + ( (1 / ( (1 / ICD) + IED) ) to: ACD *( ( - ED + I ) / (1 - ECD^2 ) ) ACDE are strictly positive real constants. I is an imaginary number. Thanks a lot for your help.

**calculus**

find 3 positive real numbers whose sum is 500 and whose product is as large as possible.

**chemistry**

there should be an E(V) too. let suppose your E(V)=.128.. your calculation should somewhat look like this if I'm not wrong, Ecell=E^o cell - (RT/nF)lnQ .125=0-(.0592/2)lnQ e^(-.128/.0296)=[I]/.1M [I]=.001324 [Pb]= [I]x(1/2)=.000662 ksp=[Pb][I^2]=1.16E-09

**physics**

Suppose a rope of mass m hangs between two trees. The ends of the rope are at the same height and they make an angle θ with the trees. (a) What is the tension at the ends of the rope where it is connected to the trees? Express your answer in terms of m, g, and θ (...

**programming**

b. Write a well-commented C++ program that reads data from the input file employee.txt. Each input line consists of last name, first name, base salary, total sales, and number of years of service. Store the output in the file employees_payCheck.txt. Format your output to have ...

**chemistry**

If lithium is a BCC crystal. planar density is atoms per area the 001 plane look like this o--o | | o--o the sides are equal to lattice constant a and the atoms in this area = 4(1/4) = 1

**chemistry**

Lithium is a BCC Crystal a = 3.5092 * 10^-8 Planar Density (001) (top plane) = 1/a^2 = 8.12 * 10^14

**Algebra (logs)**

Please help, I need help on these two problems. Solve the equation. log3(x − 16) = log3(9x) e^1 + ln(7) It appears on the homework that the ln(7) is written like this ^ln(7) but I am still stuck on it. Thanks!

**college physics**

An aluminum cup contains 225 g of water

**Physics**

What is the magnitude of the electric field 0.3 m from a 10-4 C point charge?

**Physics**

A 100 m long wire with a cross-sectional area of 4 mm2 has a resistance of 6 ohms. What is the resistivity of the material of the wire in Ùm?

**maths**

i am a mutiple of 5 ,but not a mulitple of 10.my units and hunderde are the same.the sum of my three digits is 11,what am i

**physics**

A shuffleboard disk is accelerated to a speed of 5.6 m/s and released. If the coefficient of kinetic friction between the disk and the concrete court is 0.29, how far does the disk go before it comes to a stop? The courts are 15.7 m long.

**algebra 1**

75

**physics**

A box, open at the top, in form of a cube of edge length 40 cm, is constructed from a metal plate. Find the coordinates of the center of mass of the box with respect to x, y, and z coordinate system.

**physics**

On the surface of the Moon, a ball is thrown horizontally, with a speed of 15 m/s, from the top of a 6 m tall hill. How far from the point on the ground directly below the launch point does the ball strike the ground? (On the Moon, the acceleration due to gravity is only 1.67 ...

**geometry help**

a trapezoid has base lengths of 4 and 19 feet, with an area of 115 square feet. what is the height of the trapezoid?

**math**

your class has 8 women and 19 men. write the number of women to men as a ratio and as a quoyient. whatpercent of the class are women? show your work.

**math**

ratio of 8/9,quotient of 8/19,percent of 8/19.

**Chemistry**

The melting temperature of the fluorides of selected alkali metals and alkaline earths are listed below (see Table). If one considers the trend of the listed melting temperatures in terms of both the ionic character of the bonds and the ionic potentials of the compounds, which...

**Math**

okay thanks bobpursley

**Math**

The rounded numbers all range from the hundred thousands to the millions. Which place-value should be used as intervals for a scale for the graph?

**determining speed**

car leaves a 20 ft. skid mark how fast was the car traviling

**Algebra 2**

M Varies jointly with A and T and inversley with H. Write and equation that represents the relationship.

**chemistry**

438mL

**psychology**

D!! Thank you

**psychology**

based on the websit you provided I will assume it is B.

**psychology**

Jeff says, "It seems like the more money people make, the more debt they assume," but a/an __________ study might make the case that a rise in income does not by itself cause an increase in debt. criterion validity case experimental correlational I chose C.

**psychology**

Would it be D?

**psychology**

One advantage of using tests in research, rather than laboratory observation, is the usefulness of: the presence of the researchers, which increases the reliability of the results. describing behavior, rather than explaining it. tests in clarifying the differences in the ...

**psychology**

I chose D. Am I correct?

**psychology**

To gain acceptance, a hypothesis must be: suggested by a credible authority. kept secret until the research is completed. imaginative and appealing. backed by empirical evidence

**psychology**

Please help!!

**psychology**

It is the proper role of a psychological research scientist to: question data. make safe predictions. keep research methods accessible only to those involved in the research. avoid making predictions.

**psychology**

Im confused, please help!

**psychology**

Psychologists are interested in people's behavior and their mental processes. Psychologists believe that: behavior is impacted by environment, but not by a person's physical state. behavior is affected by a person's mental and physical state, but rarely by his or ...

**social studies**

I think its D, but not sure, please help!

**social studies**

To use dollar-cost averaging, an investor must invest: in securities with high average yields. in dollars rather than currencies from outside the U.S. or Canada. a variable amount of money at regular intervals. the same amount of money in stocks regularly.

**Chem**

u need to get the M as M= 15*M(C) + 22 * M(H) + 2 * M(O) + 1 M(Cl) + 1 M(N) then u use the formula n=m/M and u replace youll have m= n*M

**physics**

hows that it doesnt work whats the full equation?

**physics**

A motorcycle and 66.0 kg rider accelerate at 2.0 m/s2 up a ramp inclined 5.0° above the horizontal. What are the magnitude of (a) the net force on the rider and (b) the force on the rider from the motorcycle?

**Chemistry**

1.44*10^-66

**algrebra 2**

how to find the xintercept and y intercept 5y=15x-90

**algebrra**

perimeter: 56cm 7cm 24cm the lenght of the third side of the triangle is? idk

**algebraa**

thats what i gett

**algebraa**

mm 13cm??

**algebraa**

perimeter= 30 5cm 12cm the lenght of the third side of the triangle is?

**algebraa**

find the length of the third side of the triangle perimeter=12 3cm 4cm

**English-Literature**

house

**chemistry**

Using the Le Chatelier's principle, predict the direction of the net reaction in each of the following equilibrium systems, as a result of increasing the pressure at constant temperature. a)N2(g) + O2(g) ==> 2NO(g) <== b)PCl5 ==> PCl3(g) + Cl2(g) <== c)CO(g) + ...

**At what temperature do hydrogen molecules have the**

At what temperature do hydrogen molecules have the same rms speed as nitrogen molecules at 90 degrees Celsius?

**physics**

a)2.910 b)11.089

**Pyhsics**

Coefficient of kinetic friction= tan0- Accelaration/gcos0

**Pyhsics**

0.176

**math**

my P.E. teacher asked the 100 seventh graders in my school if they could swim. Half of the boys and two thirds of the girls said yes. Seventeen boys said no. How many seventh graders know how to swim?

**A level Mathematics**

Show that the tangents to the curve X=ln((y^2)-6y+11) ,at the points where X=ln6,meet at the point ((ln6)-(4/3),3)

**maths**

Show that the tangents to the curve X=ln((y^2)-6y+11) ,at the points where X=ln6,meet at the point ((ln6)-(4/3),3)

**gen 300**

i cant think of one

**gen 300**

i need this assignment

**gen 300**

Identify a problem in your day-to-day life you would like to solve (e.g., time management). Using the information from your Week Three readings as a guide, prepare a 700 to 1,050-word paper in which you develop a research strategy to find a solution for your selected problem. ...

**Algebra Math 116**

How can you tell if a value is a solution to an inequality.

**psychology**

reflect on a challenging experience that you have encountered in either a professional or personal environment that involved significant “thinking through” or reasoning.

**psycholgy**

all my experiences have been horrible, sister drowning in the pool and dying, hrs, uncle was murdered on thanksgiving, which one sounds good to talk about, why would i even want to talk about it anyways..forget it let someone else help me instead of trying to analyze me my ...

**psycholgy**

i only have to pass this class so i can switch majors, i hate psychology and i did not realize what i wass getting into i was just excited to go back to school..im changing to criminal justice, psychology is not for me

**psycholgy**

wow that sounds like it was a hard decision, how do u quit doing something you did your entire life

**psycholgy**

give an experience

**psycholgy**

Prepare a 1,050 to 1,400-word paper in which you reflect on a challenging experience that you have encountered in either a professional or personal environment that involved significant “thinking through” or reasoning. Be sure to address the following items: a. ...

**language**

My school gives out these pop quizzes and this bonus quiz asks this question: what does polyvinylrododospagaspamomo mean? please help! sincerely, Karl

**language**

thanks for trying

**language**

My school gives out these pop quizzes and this bonus quiz asks this question: what does polyvinylrododospagaspamomo mean? please help! sincerely, Karl

**chemistry**

Well, the pressure here is not constant, but the temperature is. Reversible implies that there are infinitesimal changes in certain parameters. For isothermal, reversible systems delta H=0 delta U=0 q=-w and w=-nRTln(Vf/Vi) You can find your Vf by using the density constant ...

**fractions**

I cannot figure out how to turn fraction into decimals.Sample 8 over 25.Also turning decimals into fractions 0.65

**chemistry**

u suc at life

**Chemistry**

Quick question, since FePO4 is insoluble, will that mean a precipitate will form? During the experiment I don't remember seeing a precipitate. Is that my error, or is the precipitate hard to see? Sure. Adding Na3PO4 will make a big difference. FePO4 is almost completey ...

**Chemistry**

In a lab, we added NH3(aq) to CuSO4(aq), and the solution turned dark blue with a precipitate. The problem is that the products ( Cu(NH3)4 and SO4) should be soluble, no? The question is then, what is the percipitate? The ppt is Cu(OH)2. The dark blue solution is Cu(NH3)42+ ...