Kristina

This page lists questions and answers that were posted by visitors named Kristina.

Questions

The following questions were asked by visitors named Kristina.

In the old days, on a cold winter night it was common to bring a hot object to bed with you. Which would be better to keep you warm through the cold night - a 10 kg iron brick or a 10 kg jug of hot water at the same temperature? 10 kg iron brick 10 kg jug...

What would be the final temp when 100 kg of 0 degrees Celcius cold water is mixed with 60 kg of 35 degrees warm water? Ans is in degrees Celcius. The sum of the heats gained is zero (remember one will lose heat, so have a negative heat gained). Heatgained...

By how much does the H20 pressure exceed atmospheric pressure at 3 meters below the surface of a pool with fresh H20. I don't know what equation to use. You have to figure the weight of a column of water of some height h, and horizontal area A. Weight= mg...

Consider the reaction Zn(OH)2(s) + 2CN-(aq) <--> Zn(CN)2(s) + 2OH-(aq) a) Calculate K for the reaction. (Ksp Zn(CN)2= 8.0 x 10^-12) b) Will Zn(CN)2 precipitate if NaCN is added to a saturated Zn(OH)2 solution? I tried splitting this into two equations: Zn...

Calculate the molar solubility of gold(I) chloride (Ksp= 2.0 x 10^-13) in .10 M NaCN. The complex ion formed is [Au(CN)2]- with Kf= 2.0 x 10^38. Ignore any other competing equilibrium systems. I'm having trouble writing an equation to start off with. Firs...

A car travelling at 25 km per hour and gets 5 km per litre of gasoline, how long can the car travel on 20 litres of gasoline?

If 8/3 = 3/x then x = ? Thanks in advance

If a daily dosage of drug is 0.2 mg per kg of body weight how much should a 100 lb person take?

I have to do a research paper on Lupus. I need help with an introduction paragraph. ( 3-5 sentences) and a conclusion paragraph.

There are 33 students in the band. There are 6 more fifth-grade students than third-grade students. There are an equal number of third- and fourth-grade students. How many third-grade students are in the band?

Use properties of logarithms to find the exact value of this expression. Do not use a calculator. 6log6 8 - log6 7

Suppose that ln2 = a and ln3 = b. Use properties of logarithms to write this logarithm in terms of a and b. ln8

Express y as a function of x. The constant C is a positive number. ln y = ln x + ln C

Solve this equation. Verify your solution using a graphing utility. log_a(x - 1) - log_a(x + 6) = log_a(x - 2) - log_a(x + 3)

Solve this equation. Verify your solution using a graphing utility. log_1/3(x2 + x) - log_1/3(x2 - x) = -1

Does anyone know what the 1-1-1 rule in regards to spelling?

The question is: If the ones digit of a number greater than 1 is 0, what factor or factors must that number have? a) 2 only b) 5 only c) 2 and 5 d) neither 2 or 5 I thought neither D as it would have to be a number such as 10. 10 + 10 = 20 10 + 10 + 10 =...

1) Kevin is making yogurt bars for a picnic. He has 6 rows of yogurt bars on a tray. There are 3 bars in each row. How many yogurt bars does Kevin make? Answer: 6 x 3 = 18 yogurt bars 2) HOW CAN YOU USE MULTIPLICATION FACTS FOR 1 AND 2 TO FIND 3 x 7? I do...

How can you use two multiplication facts to multiply 6 x 9? Use the array below to explain how you might multiply. ********* ********* ********* ********* ********* *********

This is a projectile motion problem where I need to find the velocity and angle I launch a ball at to hit a ship. The ball is on a cliff 400 m high, and the ship is 250 m away from the cliff. The ship is moving away at a velocity of 40 m/s. What velocity...

How do you determine the number of atoms in 28.7 grams of gold (Au)

How do you determine the number of moles in 78.6 grams of carbon tetrachloride (CCl4) ?

An element has ccp packing with a face-centered cubic unit cell. Its density is 8.92 g/cm3 and the unit cell volume is 4.72 x 10-26 L. Calculate the molar mass (g/mol) of the element to three significant figures.

how many tens are in 13,644 A.4 B.13,644 C.1,364 D1,364.4

Who did Oedipus believe was his father?

One more question........ Who was King Oedipus lead away from?

In a historical movie, two knights on horseback start from rest 94m apart and ride directly toward each other to do battle. Sir George's acceleration has a magnitude of 0.22 m/s2, while Sir Alfred's has a magnitude of 0.27 m/s2. Relative to Sir George's s...

Could you explain in detail why a saponification reaction is considered to be the reverse of an esterification reaction.

3 radical 4x^2 time s radical 6x^4 times 3radical 9x

If the temperature of a room is 70 degrees F, what is the temperature of the room in Celsius? In Kelvin?

This is a tough one :( The region between the graphs of x=y^2 and x=6y is rotated around the line y=6. Find the volume of the resulting solid please... i am unable to get the correct answer :(

Find the volume of the solid formed by rotating the region enclosed by y=e^(4x)+2, y=0, x=0, x=0.8

Evaluate the integral: the integral of [5e^(2t)]/[1+4e^(2t)]dt. I used u sub and let u=e^2t and got 5/2arctan(e^2t)+C. But this answer is incorrect. Please help. Thanks

Course project,to research a healthcare facility How do i write a Outline

Find the radius of a circle with an area of pi(16x^2+24x+9)

The area of a rectangle is 25cm^2. Express the perimter of the rectangle in terms of its width.

What is the total amount of heart absorbed by 100.0 grams of water when the temperature of the water is increased from 30.0 degrees Celcius to 45.0 degrees Celcius?

Inside the cylinders of a diesel engine, the mixture of fuel and air is compressed to about 1/20 of its original volume. Although diesel engines have no spark plugs to ignite this mixture, it ignites anyway because of what?

A regular decagon(12 sides) in inscribed in a circle with the radius r. The decagon has an area of108 in^2. What is the radius of the cirlce?

All of the following inclined the US toward entering on the side of the Allies in WWI EXCEPT? although some progressives opposed war, the idealistic progressive spirit pointed toward an American campaign to end militarism and establish a peaceful world or...

The half-life for the radioactive decay of U-238 is 4.5 billion years and is independent of initial concentration. a) How long will it take for 10% of the U-238 atoms in a sample of U- 238 to decay? b)If a sample of U-238 initially contained 1.9×1018 atom...

A car accelerates uniformly (a = constant) from 34 meters/second up to 40 meters/second in 4.0 seconds. What is the acceleration of the car in meters/second2?

A truck at rest at a stoplight accelerates uniformly with acceleration a = 8 meters/second2 for 5.5 seconds after the light turns green. What is the speed of the truck in meters/second after that time interval?

Which of the following are a consequence of the Earth's yearly motion around the Sun? (check all that apply) 1.the Sun appears in different constellations in different seasons 2.the planets look different than stars 3.the Sun rises and sets 4.the Moon exh...

Which of the following explanations correctly describes the reason we see the Sun rise and set each day? 1.The Sun rotates on its axis 2.The Earth revolves around the Sun in an elliptical path 3.The Earth rotates on its axis 4.The Sun revolves around the...

I have a midterm for criminal justice class to do and the istructor she said as soon as we log in to the system we would have 2 hours 15 mins to complete it

A bucket of mass M = 5.47 kg is attached to a second bucket of mass m = 3:52 kg by an ideal string. The string is hung over an ideal pulley as shown in the gure. Mass M is started with an initial downward speed of 2.13 m/s. What then is the speed (m/s) of...

Can someone edit my ISU? it's only 8 paragraphs.

A roller coaster reaches the top of the steepest hill with a speed of 3.0 . It then descends the hill, which is at an average angle of 40 and is 50.0 long. Estimate its speed when it reaches the bottom. Assume kinetic friction (uk) = 0.18 .

A 15 kg child stands on the edge of a small merry-go-round of radius 2.0 m. If the merry-go- round turns at a steady rate of 11 rpm, calculate the magnitude and direction of the net force on the child.

If you weigh 650 N on the earth, what would be your weight on the surface of a neutron star that has the same mass as our sun and a diameter of 15.0 km ? Take the mass of the sun to be ms = 1.99×10^30 kg, the gravitational constant to be G = 6.67×10^−11 N...

Qualitatively explain how you would expect the kinetic energy to change as a glider slides down an inclined air track, where friction is negligible.

what relationship do you expect between the change in the kinetic energy and the change in the potential energy?

First estimate answer then divide to find exact answer. Simplify all answers. 2 2/3 divided by 10 2/3 I don't understand how to estimate the answer.

Name several aspects of everyday life that will change when our country converts to SI units.

Compare and contrast the theories of Daniel Levinson , Irene Frieze, and Esther Sales concerning adult development.

Find the real solutions by factoring. 3x^3+16=x^2+48x

find all points having an x-coordinate of 2 whose distance of the point (-1-2)is 5.

Factor the following. 3x^3+49=x^2+147x

In Marissa's Calculus course, attendance counts for 5% of the grade, quizzes count for 15% of the grade, exams count for 60% of the grade, and the final exam counts for 20% of the grade. Marissa had 100% average for attendance, 93% for quizzes, 82% for ex...

The following data represents the high-temperature distribution for a summer month in a city for some of the last 130 years. Treat the data as a population. Temperature Days 50-59 4 60-69 309 70-79 1428 80-89 1485 90-99 393 100-109 8 According to the empi...

The comparative statements of Lucille Company are presented here. LUCILLE COMPANY Income Statements For the Years Ended December 31 First number are 2012 2012 then 2011 Net sales $1,890,540 $1,750,500 Cost of goods sold 1,058,540 1,006,000 Gross profit 83...

Please explain I'm so lost Chandler Ltd. estimates sales for the second quarter of 2014 will be as follows. Month Units April 2,550 May 2,475 June 2,390 The target ending inventory of finished products is as follows. March 31 2,000 April 30 2,230 May 31 2...

What is Beer direct materials and raw materials? Raw materials are the basic materials and parts that are to be used in the manufacturing process Raw materials that can be physically and directly associated with the finished product during the manufacturi...

During the current year, Mast Corporation expects to produce 10,300 units and has budgeted the following: net income $350,376; variable costs $1,080,800; and fixed costs $105,000. It has invested assets of $1,459,900. The company’s budgeted ROI was 24%. W...

the function f(x)= 34.1 Ln x + 117.7 models the number of U.S. Internet users, f(x) in millions, x years after 1999. By which year will there be 250 million Internet users in the U.S.?

Use the fact that after 5715 years a given amount of carbon 14 will have decayed to half the original amount to find the exponential decay model for carbon 14. In 1947, earthenware jars containing what was known as the Dead Sea scrolls were found by an Ar...

F(t)= 30000 1+20e^-1.5t Describes the number of people, f(t), who have become ill with influenza t weeks after the initial outbreak in a town with 30,000 inhabitants. a. How many people became ill with flu when the epidemic began? b. How many people were...

What is the temperature of oxygen that boils at negative 183 Celsius?

A 25.0 gram piece of charcoal is found in some ruins of an ancient city. The sample shows a 14C activity, R, of 250 decays/min. How long (in years) has the tree this charcoal came from been dead? I think I have the use the equation: R=lamda*No*e^(-lamda*t...

You have two beakers, one filled to the 100 mL mark with sugar (mass of sugar 180.0 g) and the other filled to the 100 mL mark with water (m ass of water 100.0 g). You pour all the sugar and all the water together in a bigger beaker and stir until the sug...

The diameter of a hydrogen nucleus is 1.0 X 10 -3 pm and its mass is 1.67 X 10 -24 g. What is the density of the nucleus in grams per cubic centimeter? Assume the nucleus is a sphere with volume = 4/3pie r3.

Propose three models that explain Thomson’s findings and evaluate them. To be complete you should include Thomson’s findings.

A 2 kg block of cheddar cheese hangs from an ideal spring of negligible mass. When displaced from equilibrium and released, the cheese oscillates with a period of 0.4 secs. How much the spring stretched when the cheese hangs in equilibrium?

(I am a mom trying to help my child had Chem years ago if I can see how this is doNE I can explain it to them) You have 70.0mL of a .400M stock solution that must be diluted to .100M. How much water should I add?

1. What column do you put deposits in when you are balancing your checkbook? A. date B. transaction** C. debit D. credit 2. When creating a formula for balancing a checkbook, what do you subtract from the credits? A. debits B. check numbers** C. transacti...

1. The addictive chemical found in all tobacco products is A. tar B. nicotine** C. carbon monoxide D. insulin 2. A person who hasn’t smoked for 2 hours and is irritable is showing symptoms of (pick 2) A. respiration B. hunger** C. withdrawal D. addiction*...

A train leaves the station at 8 a.m. and averages 40 miles per hour another train leaves the same station one hour later and averages 50 miles per hour traveling in the same direction on a parallel track at what time will the second train catch up with th...

Answers

The following answers were posted by visitors named Kristina.

What is y x u= -21

Do you say by hard or by Heart??

Consider a local business whose services you frequently use. What are the main components of this company's business model? Using Figure 1.2 on p. 11 of your text as a guide, describe the three components of the business system that comprise the local bus...

Thank you!! I really appreciate your help! ( :

Be honest. Tell them where you need help and what YOU will do in order to make a change and be more successful.

Thank you so much!

I need help solving for T!!!

a minor league baseball team plays 88 games in a season . if the team won 17 more then twice as many games as they lost , how many wins and losses did the team have

you divide 12 by 6 first, your supposed to go in order from left to right then multiply by 3 then subtract by 5

i think its 4 b/c 200+200=400 and 400/100=4

How much energy does it take to convert 12.5 grams of water to water vapor?

UOP~It makes me laugh that this question has been a problem for years. Even after reading the informaiton in the text, there are additional questions that need to be answered and is difficult to find anything else on this topic.

how am i suppose to know what theta is?!?

is that how you estimate the answer?

Could someone please help me out! thank you

Could someone please help me out! Thank you

I've no idea of what i should write

By the way it's not my homework. It's just something i need to prepare for my text next week.

Can you help me figure out three models that helps explain Thomson's findings? Like one is the plum pudding model

Oh okay, my other answer for 1. would be D, is that correct or wrong?

Ohhh!! Okay so for 2. would be A??

Thanks!! I got 4/4

I am trying to find out if a recipe calls for 2/3 cups of granola, how much do I need to make 1/9 of the recipe

1. B 2. A 3. B 4. B 5. D

Thank you yango your answers are correct i got 100%!!!

2 is C and D. Got them all correct

C my friend! Always try to dig alittle deeper, that question had nothing to do with art sometimes teachers just try to trick you. good luck😀😀

The answer is 15 because 72 divided into 3 = 24 and 24 divided into 360 degrees is 15. 15 is the answer.

It is IDK cause I'm 5 😱

what is a diffrence in the 2 maiun characters in the most dangours game hook\

Hello There! I just found your site and I think that you've got something really great here with a lot of potential! As a fellow entrepreneur and website owner with over 100 websites, I'd like to offer you some free advice. You could take this website to...

Ah, I got the numbers mixed up. Thank you so much!