# Posts by ashley

Total # Posts: 3,452

physic
In an experiment, a mass m = 40 gm, attached to a string wrapped around the axle of a flywheel and starting from rest, falls through a distance of 147 cm in 3.5 seconds. The diameter of the axle of the flywheel is 12 cm What is the acceleration of the mass and the angular ...

Psych
I have a test that accurately predicts who will learn statics quickly. My test has a. predictive validity but not reliability b. content validity but not predicitive validity c. predictive valisity and reliability d. neither validity nor reliability

Psych
If an iq test has high predictive validity, then a. a psychologist can accurately guess what score someone will get before he or she has started the test. b. students who get good score on the test will get even better scores if they take the test again c. The mean and ...

Income from operations, $151,800 The following events took place for Fed Inc. during October 2012, the first month of operations as a producer of road bikes: • Purchased$427,000 of materials. • Used $367,500 of direct materials in production. • Incurred$315,...

Chemistry
so 1790 x (183/58.08) ?

Chemistry
Consider the following thermochemical equation for the combustion of acetone (C3H6O), the main ingredient in nail polish remover: C3C6O + 4 O2 --> 3 CO2 + 3H2O DELTA Hrxm= -1790kJ If a bottle of nail polish remover contains 183 mL of acetone, how much heat would be released...

Geometry
Find the area of the regular polygon with the given radius. Radius: 6cm. Area= apothem x perimeter/ 2

phi103
Mrs. Sue please help! I really need some help on these questions Please! I am having a very tough time. I have tried to answer to the best of my ability, but i am not understanding these. Can someone please help with this? Thank you. Truth tables can be used to examine ...

PHI103
I really need some help on these questions Please! I am having a very tough time. I have tried to answer to the best of my ability, but i am not understanding these. Can someone please help with this? Thank you. Truth tables can be used to examine inductive arguments. ...

PHI103
thank you for the input

PHI103
Imagine someone asks you what you have learned in your logic class and what you found to be the most useful information you learned there. Is it important for people to study logic? What kinds of mistakes might they make without having been exposed to a careful study of ...

Chem 1A
A 15.00 g sample of an ionic compound NaA, where A- is the anion of a weak acid, was dissolved in enough water to make 100.0 mL of solution and was then titrated with 0.100 M HCl. After 700.0 mL of HCl was added, the pH was 5.00. The experimenter found that 1.40 L of 0.100 M ...

Physics
Consider the 665 N weight held by two cables The left-hand cable had tension T2 and makes an angle of 43◦ with the ceiling. The right-hand cable had tension T1 and makes an angle of 48◦ with the ceiling. What is the tension in the cable T1 slanted at an angle of 48...

^thats wrong. I got it wrong. sorry.

Chemistry
Predict the products when a chemist mixes an aqueous sodium chloride solution with an aqueous calcium nitrate solution.

Chemistry
A chemist mixes aqueous sodium bromide and aqueous lead (II) nitrate. Predict the product(s) of the reaction.

CALCULUS

288/6=48. 48*5=240

ACC 290
How would I record the following transactions into a "T" account? This information relates to Pickert Real Estate Agency. Oct. 1 Stockholders invest $30,000 in exchange for common stock of the corporation. 2 Hires an administrative assistant at an annual salary of$...

PHI103
If the word "should" appears in a sentence, that sentence will always involve an ethical claim. True False To tell you the truth i really do not know this but maybe it could be true

PH103
A good way to establish a conclusion as true, or probable, is to A)insist that you are correct. b)construct a strong argument. c)construct a fallacious argument. d)ignore any objections to your conclusion I think it is b, can you help me to be sure.

PHi103
Karl Popper advocates, as a more efficient way to examine a scientific hypothesis, which of the following? a)Gather as much data as possible supporting the hypothesis b)Fake the data c)Try to show the hypothesis is false d)Meditate on what the hypothesis really means I believe...

PHi103
Karl Popper advocates, as a more efficient way to examine a scientific hypothesis, which of the following I believe it could be A Gather as much data as possible supporting the hypothesis

Chemistry Help! Thank you :)
Thank you!

Chemistry Help! Thank you :)
Assuming the final solution will be diluted to 1.00 , how much more should you add to achieve the desired pH? Information: Imagine that you are in chemistry lab and need to make 1.00 L of a solution with a pH of 2.80. You have in front of you: 100 ml of 7.00×10−2 M...

Math
0.0003556 in scientific notation

Math
Sarah drove 30 miles with an average speed of 40mph. How long was she driving for?

math
George is making a circle graph of the basketball shots he made during the season. He made 16 foul shots, 29 two-point shots, and 5 three-point shots. What will be the measure of the angle he makes when creating the sector for foul shots?

Physics
The acceleration of gravity at the surface of the moon is approximately 1/6 that at the surface of the Earth (9.8m/s). What is the weight of an astronaut standing on the moon whose weight on Earth is 180lbs?

ACC 290
What is an example of an accrual?

ACC 290
When might an accountant use cash basis accounting without violating GAAP?

english
when Odysseus described his reputation for guile to Alcinous, he is revealing A)internal conflict B)character C)external conflict D)irony

what is 3/5 of 10? what is 1/3 of 12?

Chemistry
Calculate the pH of a 5.90 10-3 M solution of H2SO4 I have tried doing this as pH=-log[H+] and also by multiplying the Molarity by two because there are two hydrogens and then doing the -log but both ways have gotten me the wrong answer is there something i am missing? same ...

Chemistry
Calculate the pH of an aqueous solution containing 3.8 10-2 M HCl, 1.0 10-2 M H2SO4, and 3.3 10-2 M HCN.

physics
If the height of the water slide in the figure below is h1 = 1.55 m and h2 = 1.35 m, and the person's initial speed at point A is 0.593 m/s, at what location does the swimmer splash down in the pool?

Chemistry
How many moles of water are in 1.0g of water? (Give number only in space below to the correct number of significant figures)

Chemistry
In 1 mole of CaCl2 there are ____ moles of chloride ions. A. 1 B. 2 C. 0.5 D. None of these

Chemistry
There are _______ oxygen ions in 1 mole of Na2O. A. 6.0 x 10^23 O2 ions B. 1.2 x 10^24 O2 ions C. 3.0 x 10^23 ions D. None of these

Stats
Given that a sample is approximately bell-shaped with a mean of 60 and a standard deviation of 3, the approximate percentage of data values that is expected to fall between 54 and 66 is 75% 95% 68% 99.7%

Chem
When I do a) I get an answer of 0.298M, however, it says I'm wrong. b) worked perfectly

Chem
What stoichiometric concentration of the indicated substance is required to obtain an aqueous solution with the pH value shown below? a)aniline, C6H5NH2, for pH= 9.05 b)NH4Cl for pH= 5.22

psychology
a condition of late adulthood in which the pressure in the eye increases

Physics
An electron moves with speed 2.46 x 105 m/s in a 1.39-T uniform magnetic field. At one instant, the electron is moving due west and experiences an upward magnetic force of 2.81 x 10−14 N. Caculate the magnetic field (angle). What is the direction of the magnetic field? ...

Makoto and Otis each decorate diamond patterns that are the same size and shape. Makoto deoorates 1/8 of a diamond. Otis decorate 1/4 of a diamond. Who decorates more

Dwayne eats 1/9 of the raisin bread. Francisco eats 1/3 of the raisin bread. Who eats more raisin bread?

Dwayne eats 1/9 of the raisin bread. Francisco eats 1/3 of raisin bread. who eats more raisin bread?

valarie makes 2 pans of brownies for a bake sale. She cuts each pan into 12 brownies. She sell 15 brownies. What fractional part of a pan of brownies did valarie sell?

math
valarie makes 2 pans of brownies for a bake sale. She cuts each pan into 12 brownies. She sell 15 brownies. What fractional part of a pan of brownies did valarie sell?

math

A small, spherical bead of mass 1.9 g is released from rest at t = 0 in a bottle of liquid shampoo. The differential equation of motion is dv/dt = g−b/m*v . The terminal speed is observed to be 1.6 cm/s. The acceleration of gravity is 9.8 m/s2 . Find the value of the ...

Thank You!!!

A Ferris wheel rotates 4 times each minute and has a diameter of 17 m. The acceleration of gravity is 9.8 m/s2. What is the centripetal acceleration of a rider? Answer in units of m/s2

A Ferris wheel rotates 4 times each minute and has a diameter of 17 m. The acceleration of gravity is 9.8 m/s2. What is the centripetal acceleration of a rider? Answer in units of m/s2

physics
A 60 kg woman and an 85 kg man stand 9.0 m apart on frictionless ice. (a) How far from the woman is their CM? (b) If each holds one end of a rope, and the man pulls on the rope so that he moves 1.1 m, how far from the woman will he be now? (c) How far will the man have moved ...

geometry
If the m of angle AMD =x+2y and m og angle ABC=2x-y. Find the values of x and y

math
kim ate 3/2 slices of an apple. Did he eat less than a whole apple or more than the whole apple. draw picture to show your answer

MATH
Indira gets 12 birthday presents. She opens 2/3 of them. how many presents does she have left to open?

science
The density of liquid oxygen at its boiling point is 1.14 \rm{kg/L} , and its heat of vaporization is 213 \rm{kJ/kg} . How much energy in joules would be absorbed by 4.0 L of liquid ox

Stats
Explain how to calculate margin of error. What effect does increasing your sample size have on the margin of error? What effect does it have on the confidence level? What effect does it have on the confidence interval?

Chemistry
If a hydrate was found to contain 12% water and the original weight of the sample was 30g, what will be the final weight of the anhydrous sample?

Math
3 quarters, 4 dimes and 4 pennies. .75+.40+.04=1.19

statistics
Find the number z that satisfies the proportion of the observations in a standard normal distribution less than z is 30%?

Math
x= unknown number 1/3x-36=22 is the equation next line 1/3x=22+36 1/3x=58 You must do the inverse operation on both sides of the equation. (1/3x-36+36=22+36)--> (1/3x=58) next line x=174 Again do the inverse operation on both sides. (3/1 x 1/3x=3/1 x 58)-->(x=174)

english
I need examples of a sonnet!

maths
How do I find the derivative of ln(ln(1-x))? I know that the derivative of ln(ln(x)) would be 1/xlnx. Would the answer be 1/(1-x)ln(1-x)?

Calculus AB
Would the answer be (x^4)/4 + (e^3x)/3 + C?

chemistry
11.2 Liters

physical Science
When a light bulb is rated at 60 W ft what do this mean?

physics
A slingshot consists of a light leather cup attached between two rubber bands. It takes a force of 25 N to stretch the bands 1.1 cm. a) What is the equivalent spring constant of the rubber bands? Answer in units of N/m b) How much force is required to pull the cup of the ...

Physics
(1290+246)/4 Then use the formula T=2*pi**squareroot*(m/k) to find the answer

physics
A visitor to a lighthouse wishes to determine the height of the tower. The visitor ties a spool of thread to a small rock to make a simple pendulum, then hangs the pendulum down a spiral staircase in the center of the tower. The period of oscillation is 9.71 s. What is the ...

Physics
The distance between two successive crests of a certain transverse wave is 1.12 m. Eight crests pass a given point along the direction of travel every 12.3 s. Calculate the wave speed. Answer in units of m/s

Physics
Why do electric field lines begin on positive charges and end on negative charges?

chemistry
If I make 1 Liter of a 2M magnesium phosphate solution, how many grams of magnesium phosphate do I need

Operations management
At a major supermarket, checkout time is monitored to improve service quality. For six days, samples each with 20 observations have been obtained, and the following table summarizes the data. Determine if the checkout process is in control or not. You must show your analysis ...

Health - Violence and Injury
1. Which of the following is/are common characteristic(s) of child abusers? a. frustration with life b. has experienced violence in their life c. low socioeconomic status d. All of these 2. Jane is being harassed by a coworker. You would tell her to a. confront the person ...

Operations management
An appliance manufacturer wants to contract with a repair shop to handle authorized repairs. The company has an acceptable range of repair time from 50 minutes to 90 minutes. Two firms have submitted bids for the work. In the evaluation trail, one firm had a mean repair time ...

physics
state whether the variation pressure at nodes in a stationary wave is maximum or zero .justify

physics
two collinear harmonic oscillation x1=8sin(100pie(t)) and x2=12sin(96pie(t)) are superposed.calculate the *maximum and minimum amplitudes *the frequency of amplitude modulation

physics
for a damped harmonic oscillation , the equation of motion is md^2x/dt^2+(gamma)dx/dt+kx=o with m=0.025kg,(gamma)=0.07kg/s and k=85N/m. *calculate the period of motion *number of oscillation in which its amplitude will become half of its initial value *the number of ...

physics
the equation of transverse wave on a rope is y(x,t)=5sin(4.0t-0.02x) where (y) and(x) are measured in cm and (t) in second.calculate the maximum speed of particle on the rope

math
mr spoke is a salesman at pop's cycle shop. each month he earns 800 plus 7% of his total monthly sales. how much did he earn last month if his sales totalled 9200

chemistry
A student is given 3 beakers: Beaker 1- 50.0 ml of a solution produced by dissolving 6.00 grams of a weak monoprotic acid ,HX, in enough water to produce 1 liter of solution. The empirical formula of HX is CH2O. The solution contains 3 drops of phenolphthalein. Beaker 2- A 0....

chemisry
A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent. 100 ml of a 0.1M solution of the above acid is titrated with 0.1 M NaOH. After an ...

Social Studies 7R - DBQ Essay
taxed them after the french and indian war. they didn't have a lot of rights

chemistry
A 0.1 molal solution of a weak monoprotic acid was found to depress the freezing point of water 0.1930C. Determine the Ka of the acid. You can assume 0.1 molal and 0.1 molar are equivalent.

ELA
pupperoni

math
Mary worked 30 hours this week, five of these hours were on Christmas Day (holiday pay). Determine Mary’s gross pay for this week

Geometry
That's all that the questions says.

Geometry
Bronson and a friend are going to carry a canoe across a flat field, describe the shortest path they can use.

Finite Math
Sinking fund which the goal of \$100,000 to reach with n=22, i= 0. 03

Microbiology
You have a broth that contains 2.7x10^7 cfu/ml/ How many colonies would you expect to count on a plate if you spread our: a. 1.0ml? b. 0.1ml?

Chemistry
12865.6

chemistry
so its e?

chemistry
The molecular mass of a substance was determined by the freezing point depression technique. The minimum data required for the determination are a. delta Tf and Kf only. b. delta Tf , Kf and mass of solute. c. delta Tf , Kf , mass of solute and mass of solvent. d. delta Tf , ...

algebra
together, steve and tom sold 130 raffle tickets for their school. steve sold 14 more than three times as many tickets as tom. how many tickets did each boy sell

Physics
Charges of +2.38 nC and -1.06 nC are located at opposite corners, A and C, respectively, of a square which is L = 1.13 m on a side. What is the electric potential at a third corner, B, of the square (where there is no charge)?

Post a New Question