Fred

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

Questions

The following questions were asked by visitors named Fred.

An 1800-kg car starting from rest accelerates constantly during the first 9.50 s of its motion. If the force acting on the car is 2150 N, what is the car;s speed at the end of this time? 2150 N = 1800 kg. (a) a = 1.194 (1.194)(9.5 s) = 11.347 m/s correct?...

what force must be exerted on an electron to move it from a state of rest to a speed of 3.5 x 10^7 m/s in a distance of 0.75 m? Look up the mass of the electron and call it m. Then compute the required acceleration a, using V = sqrt(2 a X) (Solve that for...

I assume that is 5.5 m/s, the initial velocity. Ok, assuming that, then you know the initial KEnergy; 1/2 .62 (5.5)^2 joules. At the max height, the KE you are given is KE from horizontal motion. So subtract that amount (2.3J) from the initial KE, and you...

Hi i was wondering if you knew what some important cities, areas,towns,etc. were in the book "The Things They carried" or if there were any maps of the main setting. I haven't read this book, but judging from the review at amazon.com, it takes place in Vi...

Hi i kind of get these questions but i got stuck on this... What is the molarity of an H2SO4 solution if 0.25L of the solution contains 0.75L MOL of H2SO4? thanks again for yourself i really do appreciate it :) Molarity= molessolute/litersolution = .75/.2...

I have a few questions that i have no idea... What were some of the factors that helped John F.Kennedy win the presidency? What were the results of the bay of pigs invasion? How was the berlin crisis resolved? thanks again i just have no idea wat they are...

How do u find similar figures when using a proportion?'cause I don't get it dude. **EXAMPLE-On two sides-72m On the other 2-45m The next one says On one side-50m On the other- 80m Determine whether they are similar. I don't get it. Please help! THANX! it...

The bearing of A from B is 060 degrees. What is the bearing of B from A? Is it: a) 60 degrees b) 240 degrees c) 120 degrees d) 200 degrees p.s. The questions I sent earlier was an acccident To get reciprocal bearings, add 180 Thanks bobpursley

What are bearings? Bearings are things that surround rotating shafts to reduce friction and wear. The word "bearing", as in compass bearing, can also refer to the direction that something is moving (such as 10 degrees east of north). I have heard of no me...

What is a three-figure bearing. Since this is not my area of expertise, I searched Google under the key words "<I>three-figure bearing</I>" to get these possible sources: http://www.broadeducation.com/htmlDemos/AbsorbMath/Bearings/page.htm http://www.sail...

What exactly is holistic biology and what are some examples of it? Thank you.

Kim and Al need to determine the actual mass of lead(II) sulfate in grams that formed when 1250.0mL of 0.0500 M lead(II) nitrate was mixed with 0.2000 kL of 0.0250 M sodium sulfate. When the experiment was completed Kim determined that they had a 67.5% yi...

Please can someone help me with this question? By official definition, true wilderness is a roadless area with roads only built to its edges. Name some specific wilderness areas that fit this definition. Thanks!

Trees are renewable resources, aren't they? Because when people cut them down, you can just plant new ones. However, is the wilderness renewable? If not, how can this be? I am reading A Sand County Almanac and Leopold says that wilderness is a resource th...

Hi. I live in Wisconsin and I have to describe how productivity (amount of biomass produced), diversity (variety of species), complexity (number of species in trophic levels and number of trophic levels), and resilience (remaining stable) affects my ecosy...

On the balance sheet it states that bonds payable is $32,000 and Discount on bonds payable is $2000. When it says that the company retired the bond at net book value, does that mean they cashed out $30,000 and that's the amount that goes into the Cash Flo...

Industrial melanism was seen in what insect?

From elements Arsenic to Antimony, which has the smallest Ionic Radius and why.

For Its Breakfast Special, a restaurant offers fried eggs or scrambled eggs with ham or bacon or sausage, plus a choice of 5 different kinds of toast. How many different breakfasts are possible?

A new car is sold with or without antilock brakes, with or without a cd player, with or without electric seats, and with or without a sunroof. How many different choices are there?

2*2*2*2 = 16 choices to my previous question?

A 50 kg block is on a 30 degree incline. The coefficient of friction between the block and the incline 0.05. If it is given an initial velocity of 10 m/s up the incline, how far will it travel until it stops?

A mixture of ethyne ( C2H2 ) and methane ( CH4 ) occupied a certain volume at a total pressure of 16.8 kPa. Upon burning the sample to form CO2 and H2O, the CO2 was collected and its pressure found to be 25.6 kPa in the same volume and at the same tempera...

I did a lab in which I added ionic solutions to tap and distilled water and another ionic solution. Distilled water is the control because it does not react to any solutions since it doesn't contain ions. But one of the lab questions I need to answer is:...

factor: 4s^2+4s+1

If a 1.75 m tall man is looking at a plane mirror from an eye which is 15 cm from the top of their head, what is the minimum length that the mirror must be so that he can just barely see his whole body in the mirror? How far up from the ground must the mi...

A virtual image -7 cm tall and 17 cm away from a mirror is created by an object 7 cm away from a mirror. How tall is the object? What kind of mirror created the image? What is its focal length?

(1) A virtual image -7 cm tall and 17 cm away from a mirror is created by an object 7 cm away from a mirror. How tall is the object? What kind of mirror created the image? What is its focal length? (2) If a 1.75 m tall man is looking at a plane mirror fro...

Consider a solution that contains both C5H5N and C5H5NHNO3. (Kb for pyridine, C5H5N, is 4.0 x 10^-4) (a) Calculate the ratio of [C5H5N]/[C5H5NH+] if the solution has a pH of 4.50. (b) Calculate the ratio of [C5H5N]/[C5H5NH+] if the solution has a pH of 5....

(1) A helium atom consists of two protons (charge +2e) and two electrons (charge -2e) that are an average of 4.3 x 10^-11 m apart. Find the electrical force between them. Find the gravitational force between them. What is the ratio of gravitational to ele...

A portion of an electric circuit connected to a 7 ohm resistor is embedded in 1.20 kg of a solid substance in a calorimeter. The external portion of the circuit is connected to a 100 volt power supply. (a) Assuming that all the heat generated by the resis...

How do i solve the functions domain, range, x intercept and y intercept for this function..there is a a shaded dot on (-4,-4) and then theres a curved line going up to an unshaded dot on (0,0)

How do i solve the functions domain, range, x intercept and y intercept for this function..there is a a shaded dot on (-4,-4) and then theres a curved line going up to an unshaded dot on (0,0), it also has to be interval notation but im not sure how to do...

At the beginning of George’s diet, he weighed 212 pounds, and 8 weeks later he weighed 198 pounds. Find the average rate of change of George’s weight.

How do you determine the ending work in process inventory, in cost accounting

(a) How do you calculate manufacturing overhead costs to the two products using activity based costing (ABC).

VF is a small accounting firm supporting wealthy individuals in their preparation of annual income tax statement. Every December, VF sends out a short survey to their customers, asking for the information required for preparing the tax statements. Based o...

How to write a 4 sentence summary of the five living groups? Plants,animals, fungus,bacteria, and protista

A long jumper approaches his takeoff board A with a horizontal velocity of 30ft/s. Find the vertical component (vy) of the velocity of his center of gravity at takeoff for him to make the jump if he lands at a spot 22ft from point A. What is the vertical...

Which of the following is an example of an analogy? A) The results of this survey showed that people like our product more than our competitor's product. B) There is a national trend toward healthier eating; as a result we should see an increase in the sa...

A ball of mass 0.640 kg moving east (+x direction) with a speed of 3.10 m/s collides head-on with a 0.780 kg ball at rest. If the collision is perfectly elastic, what will be the speed and direction of each ball after the collision? 1. ball originally at...

Platinum has a face-centered cubic crystal structure and a density of 21.5 g/cm3. What is the radius of the platinum atom?

How many liters of oxygen gas at 153 degrees celsius and 0.820 atm can be produced by the decomposition of 22.4 g of solid KClO3? (The other decomposition product is solid potassium chloride)

If you have the q cal of a reaction, then obviously you can convert to q chem by negating your q cal. But what if you need to get to q rxn (q of the reaction)? Also, my textbook is claiming that the q rxn = -(q sol + q cal). How does that figure into this...

The specific heat of a solution is X J/g*degreesC and its density is Y g/mL. The solution was formed by combining Z mL of solution A with Z mL of solution B, with each solution initially at J degreesC. The final temperature of the combined solutions is D....

Youth Criminal Justice Act essay? Thesis: The YCJA should be strictly enforced, if it is to be successful. Give 4 possible body paragraph ideas!

I was wondering if you could help me with understanding how an infrared detector works. It is just a cheap one that comes with an emitter from Radioshack. I can't find any websites that tell me what I want to know. What makes the detector detect infrared?...

If f(x) = (e^(x))sin(x) what is the 1000th derivative? Step are needed and the general rule/pattern

The question is to draw two cards from a standard deck without replacement. To win, both cards must be face cards. What is the probability you will LOSE? I know how to use complement to get the answer. Why does P(Not face)* P(Not face) produce a different...

A 2.28 m solution of the solute formic acid dissolved in the solvent H2O is available. Calculate the mass ( kg ) of the solution that must be taken to obtain 12.40 mol of formic acid. Correct Answer = 6.01 Molar Mass (g/mol): HCO2H 46.03 H2O 18.015 Densit...

decide whether the pair of lines are parallel,perpendcular, or neither. 4x + y = 8 3y - 4y = 10

Solve for x: 2^(-x+1) = 4(8^x) I try isolating the 4 but I can't seem to solve it correctly when using ln or log applications. The answer is supposed to be x=-1/4. Any help?

At the ocean, it is known that the tide follows a trigonometric path. At high tide, the water comes in to a point 1 meter from where I placed a flag. At low tide, the water comes in to a point 11 meters from the same flag. The time it takes from to get fr...

A helicopter pilot drops a package when the helicopter is 200 ft. above the ground, rising at 20 ft/sec. How long will it take for the package to hit the ground? What is the speed of the package at impact? I know you set s(t) equal to zero, so -16(t^2)+20...

You are replacing an old piece of machinery with a new one that offers improved technology and efficiencies to your company. The new machine will cost you $50,000 and it will provide you with a cash inflow of $10,500 PER YEAR for the next 7 years. You can...

A bullet with a mass of 55 grams moving with a speed of 100 m/s slams into and wedges in a 1.9 kilogram block of wood supported by a string initially at rest. Which one, conservation of energy or conservation of momentum, can be applied to this situation?...

Find the emf for the cell Cr(s) |Cr3+(aq, 0.37 M) || Pb2+(aq, 0.0095 M) | Pb(s). Answer in units of V Can someone please help me? I have the equation: 2Cr +3Pb(+2) --> 2Cr(+3) + 3Pb

A straight driveway perpendicular to a straight highway leads to a house located one mile away. A truck travels past the house traveling 60 miles per hour. How fast is the distance between the truck and the house increasing when the truck is three miles p...

I need to describe what a standard operating procedure is and what procedures it may involve. Thankyou.

what is the acceleration of a boy on a skateboard if the unbalanced forward force on the boy is 15 N? The total mass of the boy and the skateboard in 58 kg

Neurons: A. may be myelinated by microglia. B. secrete neurotransmitters from their nerve terminals in response to action potentials. C. are the most abundance cell-type in the brain D. often contain swellings at the nerve endings known as synaptic batton...

a 1200 kg car has KE=300,000 J. What is the cars velocity?

solve. x^2 + 6x + 13 = 0

The sum of the measure of the first angle and one-fourth the second angle is 63.75 degrees;The two angles are complementary. How to find the measure of the angles?

Please give a particle diagram of the iron sulphur reaction

At elevated temperatures, SbCl5 gas decomposes into SbCl3 gas and Cl2 gas as shown by the following equation: SbCl5(g)<=> SbCl3(g) + Cl2(g) 1. What is the concentration in moles per liter of SbCl5 in the container before any decomposition occurs? 2. What...

At elevated temperatures, SbCl5 gas decomposes into SbCl3 gas and Cl2 gas as shown by the following equation: SbCl5(g)<=> SbCl3(g) + Cl2(g) (a) An 59.8 gram sample of SbCl5 (molecular weight 299.0) is placed in an evacuated 15.0 liter container at 182°C....

How many electrons are present in the outer shell of each element?

this is wierd to write but ill do my best. 12 4 square root 2 (the 4 is on top of the radical if that helps) - 7 4 square root 312 (again the 4 is on top of the radical) if this is confusing ill try to break it down more. thank you

A student applies an upward force of 49 N to a 5.4-kg physics textbook. Find the book’s acceleration (positive for up, negative for down).

Find how many moles of KF are produced when 100g of kci are used?

How Did Patria Mirabal foreshadow in the book " In the time of a butterflies" ?

8s^2-7t=0 Am I correct saying 2 real numbers?

I am confused with this. f(x) 1/4(x+9)^2+3 vertex, symmetry, and max. min. help please.

solve for y y^2-6y+9=25

f(x)=-x^2+2x+24

What is the beta of a stock whose covariance with the market portfolio return is 0.0045 if the variance of the return on the market portfolio is 0.002?

Hi, I don't like asking for help .. can someone check my work please ? In a biometric system under testing there are 500 users. 200 were legitimate users (authorised), and 300 were not ( unauthorised) At one threshold the system:- Shut out 10 individual u...

Anthony's family plants 15 trees each weekend. If t is the total number of trees planted and w is the number of weeks, what is the expression for the total number of trees, t, planted after w weeks.

A distribution of 800 test scores in a biology course was approximately normally distributed with a mean of 35 and a standard deviation of 6. Calculate the proportion of scores falling between 20 and 40

Hi, Which correctly expresses the relationship between wavelength (L), speed (V) and perios (T) of a sinusodial wavform ? a) L = T/V b) L= 2fxV/ T c) L= 1 / V x T D) L= V/T e) L = V x T f) L= V x T/ 2f I feel it is option (d) ..please check for me .. and...

An acrostic poem for the bill of rights?

What energy is associated with a photon in the infared region of the spectrum having a frequency of 4.5*10^12s^-1

Simplify a(-2)power divided by b(6)power times c(-8)power so there are no negative exponents

Hi I need help with a problem The accuracy of what measurement must be increased in order to increase the accuracy for the specific heat? Thank You!

I am taking a ground school class for my private pilot license and am having trouble with weather, what is the best way to go about learning this stuff????

Answers

The following answers were posted by visitors named Fred.

This site isn't very helpful, I'm afraid.

Aren't those examples just explaining that the environment should be examined because it plays a role on the individual? Is that really all the holistic view is about? I thought it had something to do with only looking at the whole and the input and the o...

Elizabeth, I've been to Yellowstone and I'm pretty sure it has roads throughout it. Ms. Sue, do all of those places in the map really not have any roads in them, but only to the edges?

Are humans allowed to go to Isle Royale? I don't think I'll be able to find whether or not there are roads at the dark green areas.

I know, but if you plant new trees, can you not create/supply new habitats?

So you're saying that when you create new habitats, it is no longer wilderness because of human interference? Don't polluting gases occupy every inch of the atmosphere? Are they not above every living thing on this Earth? Doesn't human influence reach eve...

Well if you're saying creating new habitats makes something not wilderness becuase of human interference how can you say something is wilderness when you agree that polluting gases reach wilderness? Can't pollution change wilderness?

thanks--i did do that--i always find it helpful to at least try and see if it is anyone's area of expertise

2*2*2*2 = 16 choices?

Yes. It simply means that your answer was lower than the correct amount. Just drop the negative.

The reason why is because they suck

If you reverse 2x^2-3x+1 to get 1-3x+2x^2, it becomes easier to factor: F irst terms must multiply to yield 1 O utside and I nside terms must add to yield -3x L ast terms must multiply to yield 2x^2 Therefore, the factors must be: (1-2x)(1-x)

1. If it falls 350 meters for every minute that passes, that means it must have fallen 350*5= 1,750 meters after 5 minutes had passed. So the answer is 1,750 meters higher. 2. Just represent the unknown numbers with letters so you can solve for them. That...

A single equation is not a system of equations.

-3*3 is the same as 3*3 with a negative sign in front. -3*3 = -9 So the new temperature would be -9 degrees Celsius.

the sum = +2 the product = -12 Use the same process I used for the second question. Remember to represent unknown numbers with letters and use algebra to solve them.

How do i solve the functions domain, range, x intercept and y intercept for this function..there is a a shaded dot on (-4,-4) and then theres a curved line going up to an unshaded dot on (0,0), it also has to be interval notation but im not sure how to do...

That is what i thought, thanks!

Thank you, Ms. Sue.

So the answer is C? Im really confused i think its comparing lions to managers at work

I have 1 more question please Which of the following statements is the correct use of a positive tone for bad news messages? A) There will be a delay in fulfilling your request. B) Sorry for your inconvenience. C) Please recheck the enclosed statement. D)...

wow, much help. thank you very much but i do have a quick question, v21² AND v22² are both in the same equation, are you saying that im supposed to put v21² AND v22² on the same side? like this.... (1/2)m1 v11² + (1/2)m2 (1/2)m1 v12² + (1/2)m2 = v21² v22²...

HEPES-> 238(.01) = 2.38g

A big ol bottle a win

Question simplified: a) how do you get q of reaction if you have q of solution, b) how do you get q of reaction of you have q of calorimiter, c) how do you get q of solution if you have q of chemicals, d) in general, should q of chemicals equal q of solut...

To do this problem you just need to use a few simple equations: V = V0 + at X = X0 + V0*t + .5*a*(t^2) and V^2 = V0^2 + 2*a*(X - X0) where V0 equals the initial velocity X0 equals the initial height t equals the time a is just the acceleration (gravity in...

I am assuming that the 1-.06 is actually 1.06. Therefore... g(x) = 5 5 / 23 = .21739 log(.21739) = x * log(1.06) log(.21739) / log(1.06) = x = -26.18999 For the first problem: A = Pe^(rt) 800 = 500 * e^(0.085 * t) 800 / 500 = 1.6 1.6 = e^(0.085 * t) Becau...

Wrong. B. 67 hundredths means 0.67 which is 67%. The decimal places goes, tenths, hundredths, thousandths, ten thousandths, hundred thousandths, and so on.

Use factorials I think.

Thank you. Now I know what I forgot. There are two ways of P(face)*P(not face) then add P(not face)* P(not face) Went brain dead.

Also, how high does the block swing after being hit by the bullet?

Actually, you can use the conservation of momentum first to find the initial velocity of the bullet-block system, and then you can plug that velocity into 1/2mv^2=mgh and solve for the height that the block swings, which gives a value of 0.403 m. Correct?

when v doubles it does the centripetal force does not increase by 2, but rather by 4.

i don't know the mass of the block, so how do I find the force of gravity. theta=arctan of what? because we are looking for the angle. I got acceleration=7.314 and time=27.4889.

SraJMcGin it makes no sense

so it would pretty much stay the same?

the answer is 10 times the square root of 2

2. they will be able to recall the directions and events which took place after they return to a fully conscious state.

IT MEANS WHAT ARE YOU STUDYING?

This answer was scored wrong, but I do not know why. If someone would kindly show me the error, I would appreciate it. First choice probability: 5/20 Second choice probability: 6/19 Third choice probability: 9/18 Total Probability: (5/20)(5/19(9/18)=3/76...

What size should the frame be?

B. Ag2SO4, Ksp = 1.5 × 10-5

Thanks, but for the first one, I thought it'd be no reaction since they are both metals. Is it possible for Ca and Al to react with each other?

How did you do it? :)

Thanks so much #yolo

so it should be 5/12+8/3=37/12?

a) b)1 c)standard deviation=

A puddle holds 150 g of water. If 0.50 g of water evaporates from the surface, what is the approximate temperature change of the remaining water? (Lv = 540 cal/g)

Would I need to multiply this to get the mass? (2.26*10^6)(5*10^6)

So the mass H20 would be 5E6/2260 X 2260 = 5E6 grams?

water density is 0.9584 L from 100°C

I mean 958.4 kg/m3 from 100°C

5E6/2260=2.21g then converted 2.21g to 0.00221L 0.00221X958.4= 2.119064

Select case marCode case “S” display “Single” case “D” display “Divorced” case “M” display “Married” case “W” display “Widowed” case else display ”Incorrect” endselect

Hello, i cant find out the values of x1,x2 can u help me please? sinx=2sinx+1 0=sinx+1 sinx=-1 <0 (III;IV) sinx=270* x1= ? x2= ?

which of the following questions should you ask to help determine suitability of a source? A. why was the source not in a database B. Are there any images C. How many pages does the source have D. Who authored the source

Oh sorry. That was my answer to my math problem: Name a fraction between 1/4 and 5/16. So was it right

49 inches tall? I am really be=ad at maths.

I got a 100% on this 1 D 2.A 3 B 4 B 5 C 6 C 7 B 8 C 9 C 10 A

they are for you to put your arms through

I would disagree because each method is different but u do come up with the same answer.

The radial line is in line with the string on the diagram and is going out from the block. The angle is in between the radial line and the block.

What are the largest and smallest areas that can be made with 100 yards of fencing

The Rf values would increase since you are increasing the polarity of the mobile phase. Normally the more polar the substance the slower it moves, however you are changing the relative polarity in the developing chamber.

6 more than one thired of a #

Thank you, but how you made that? What was the process?

I don't know the answer

alL LIVING THINS

Ahh yes forgot about zero. Thanks heaps

z = 6x + px + 2 z - 2 = 6x + px (take the 2 to the left hand side) z - 2 = x(6 + p) (Factorise the x out) x = z - 2 / 6 + p (Divide z - 2 by 6 + p to get x on its own)

I = PRN $100 = 800 x 0.05 x N (I= $100, P= $800, R=5%=0.05) $100 = 40 x N Therefore N = 2.5 It will take 2.5 years

That's all the book has given me. It has given no other information

Makes sense. Thank you

I tried but i keep getting the wrong answer. Can you please help me

Thank you. I must have made a mistake in my working out.

Thank you. I read a) wrong. I did Q a) just like I did b). Didn't notice that a) was compound interest.

1. C 2. B 3. A 4. C

a) (1,1) b) 1 c) 0.52 d) 0 e) can be different from

I never got $466 563.74. The answers in the textbook I use said that

How do you do them math(for my little brother)

It is a guess: Vishnu was congratulated by Harish on his success in the examination. Here I am changing from active voice to passive, I don't know if that is what they asked you to do.

Right! B) But I see no difference between A and B...

im asking the same question bud ;( been asking for eight years

Okay, I was not sure who was right at first but I just submitted it and @sdfghjkmsedrftgyhunjm was right the whole time for Art 7 A U5L5 Connexus

How does that work?