Charlie

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

Questions

The following questions were asked by visitors named Charlie.

I was wondering could anyone help me with question 6 an page 302 of the Business Studies for households and enterprises Junior Certificate by Matt Hynes

a bathtub can be filled by the hot and cold water pipes in four minutes and, when full, can be emptied by the waste pipe in five minutes. If it is half full and all three pipes are set running, when will the tub be filled?

A 10,000N car comes to a bridge during a storm and finds the bridge washed out. The 650-N driver must get to the other side, so he decides to try leaping it with his car. The side the car is on is 16.6 m above the river, while the opposite side is a mere...

N2H4(g) + H2(g) 2 NH3(g) H1 = –1876 kJ 3 H2(g) + N2(g) 2 NH3(g) H2 = –922 kJ The H f for the formation of hydrazine: 2 H2(g) + N2(g) N2H4(g) will be

An engine is used to pull a train of two cars out of a mine. The floor slopes upward at an angle of 24o. Each car has a mass of 0.8x104 Kg and normally travels without friction on the tracks. The engine can exert a maximum force of 1.4x105 N on car A. If...

Find a third-degree polynomial Q such that Q(1)=0, Q'(1)=0, Q''(1)=2, and Q'''(1)=12.

Ice-hockey star Wayne Gretzky is skating at 12.7 m/s toward a defender, who in turn is skating at 5.39 m/s toward Gretzky. Gretzky’s weight is 677 N; that of the defender is 869 N. Immediately after the collision, Gretzky is moving at 2.21 m/s in his orig...

A movie stunt man (mass 82.3 kg) stands on a window ledge 5.69 m above the floor. Grabbing a rope attached to a chandelier, he swings down to grapple with the movie’s villain (mass 72.3 kg), who is standing directly under the chandelier. (Assume that the...

You are stranded in the middle of a frozen pond, 825 m in diameter which is so slippery that your feet slide freely and don't move you. In desperation you write an S.O.S. on your hat, mass 0.6 kg, and fling it towards the north with a velocity of 13 m/s a...

A cannon shoots a shell straight up. It reaches its maximum height, 1,051 feet, and splits into two pieces, one weighing 2 lb and the other 4 lb. The two pieces are observed to strike the ground simultaneously. The 4 lb piece hist the ground 1,608 feet aw...

Suppose you are driving a car around in a circle of radius 157 ft, at a velocity which has the constant magnitude of 42 ft/s. A string hangs from the ceiling of the car with a mass of 1.8 kg suspended from it. What angle (in degrees) will the string make...

An object of mass 3.5x1023kg circles the earth and is attracted to it with a force whose magnitude is given be GMeM/r^2. If the period of rotation is 22 days, what is the distance from the earth to the object? Here G=6.67x10-11 Nm2/kg2, Me=6x1024 kg.

An advertisement claims that a centrifuge can produce a radial acceleration of 3,524g at 4,608 rev/min. Calculate the required radius of the centrifuge.

How do you convert money to pecent?

The position of some object moving along the x-axis is observed to be x(t)=9cos(pi*t/3+pi/4) meters. Find the frequency.

A spring of k=11 N/m has a block of mass 4 kg attached to it on a frictionless table. If the block is pulled a distance 0.15 m to the right and released from rest, how long will it take the block to return to its equilibrium position?

I'm struggling with this homework question...i have no idea how to set this up. We start with a 33.50 mL aliquot of acetic acid and titrate it with 0.215 M of NaOH. Find the pH at: 21.7 ML added the equivalence point i don't understand how this works. ple...

How do you make a cumulative frequency table

While her kid brother is on a wooden horse at the edge of a merry-go-round, Sheila rides her bicycle parallel to its edge. The wooden horses have a tangential speed of 6 m/s. Sheila rides at 4 m/s. The radius of the merry-go-round is 8 m. At what time int...

Why do north facing slopes on mountains support glaciers today while south facing slopes do not?

If Death Valley was located in an area with a lot of rainfall, how would the valley floor change? How would Death Valley change? Thanks!

How large a pressure increase (in ATM) must be applied to water if it is to be compressed in volume by 1%? The bulk modulus of water is 2 × 109 N/m2 and 1 ATM = 105 N/m2

How large a pressure increase (in ATM) must be applied to water if it is to be compressed in volume by 1%? The bulk modulus of water is 2 ~ 10^9 N/m^2 and 1 ATM = 10^5 N/m^2 I think that it is P = bulk modulus * 0.01 because 1/100 = 0.01, which is 1% of...

My french teacher has asked us too gather us questions to ask our pen pals on a live link up. (webcam to each other) but, i cannot think of anything to ask her. Please help and give me some ideas ? Charlie. x (:

I have to plot a graph of Pressure gradient vs average velocity (water in a pipe, I have all the data). I plan to put the average velocity on the x axis, since I could control that better in an experiment. Do you agree/ Thanks. Charlie

What is cracking and reforming? For what purposes are either or both used by the petroleum industry

Consider the following reaction: 2NiO (s)--> 2Ni(s) + 2O2 (g) If O2 is collected over water at 40.0 C and a total pressure of 752 mmHg, what volume of gas will be collected for the complete reaction of 25.67 g of NiO? I am struggling to set up this proble...

Uranium-235 can be separated from U-238 by fluorinating the uranium to form UF6 (which is a gas) and then taking advantage of the different rates of effusion and diffusion for compounds containing the two isotopes. Calculate the ratio of effusion rates fo...

The titration of 25.0 mL of an unknown concentration H2SO4 solution requires 83.6 mL of 0.12 M LiOH solution. What is the concentration of the H2SO4 solution (in M)? A) 0.40 M B) 0.10 M C) 0.20 M D) 0.25 M E) 0.36 M The answer is supposedly C, but I got A...

The position of a 20 g oscillating mass is given by x(t) = (2.0 cm) cos(2t), where t is in seconds. Determine the following. The Amplitude (cm.) The Period (s.) The Spring Constant (N/m) The maximum speed (cm/s) The total energy (J) The velocity at t=0.40...

I need to figure out what a deposit of 3500 a month, with 9 percent intrest compounded monthly, would be in 6 years. Any help would be greatly appreciated.

Why is the CM of a 1.00m length of pipe at its midpoint, whereas this is not true for your arm or leg?

If the angular quantities θ,ω,α were specified in terms of degrees rather than radians, how would the kinematics equations for uniformly accelerated rotational motion have to be altered?

A 50 kg skater moving at 5 m/s over frictionless ice grabs a rope stretched out 10m from a post and perpendicular to her path. She then moves in circles, spiraling inward as the rope wraps around the post. How fast is she moving when she is 2 meters from...

A box on a frictionless surface is pulled back a distance x into a spring with spring constant k and released. What is the formula for the kinetic energy of the box after it leaves the spring?

A box on a frictionless horizontal surface is pulled by a tension of 42.4N directed at 45 degrees above the horizontal. what is the work done on the box as it moves 2.50 meters along the surface?

Suppose you surveyed 50 students and 34 said that they approve of how the president is doing. Construct 90%, 95%, and 99% confidence intervals for the true proportion of students in your school who approve of how the president is doing. Be sure to specifi...

Hello all, how does the periodic table determine the type of bonding of compounds Cheers Charlie.

I have my results from a simple titration experiment (sodium carbonate against hydrochloric acid) Average titre of 53.27 cm3 which i am happy with but how can i reason that my results are accurate?

A cylindrical container of radius 20 cm contains water of height of 3 m. Two meters down from the water level there is a hole of 0.5 cm in radius. Find the velocity and volume flow rate of water leaving the hole. Where does it strike the ground?

how much are plane tickets to: india england

You mix 1.00 L of 2.00 M BaCl2 with 1.00 L of 2.00 M AgNO3. What compounds remain in solution, and what are their concentrations?

Three students take equivalent stress tests. Which is the highest relative score? a. A score of 144 on a test with a mean of 128 and a standard deviation of 34. b. A score of 90 on a test with a mean of 86 and a standard deviation of 18. c. A score of 18...

What are the 5 things that every business needs to succeed?

What percentage of the data falls outside 1 standard deviation of the mean?

Give the following reaction,find the mass of oxygen required to produce 13grams of CO2; C3H8+5O2--->3CO2 + 4H2O

The radius of the Earth is 6.38 x(10^6)m. How far (path length) does a point on the equator move if the Earth rotates... a. 20 degrees b. 20 radians c. 20 revolutions

What does KAPS mean in Math?

If PT=3x-4 and QS=4x-3 how do I solve

An operating log indicates that the average flow through a pump for ten hours is 285 gallons per minute. The following week, the same output is measured as 340 gallons per minute. What is the percent change?

The side of a lake has a uniform angle of elevation of 15 degrees 30 feet. How far up the side of the lake does the water rise if the height of the lake increases by 7.3 feet during flood season.

A light spring having a force constant of 110 is used to pull a 15.0 sled on a horizontal frictionless ice rink. The sled has an acceleration of 1.60 ? [2/27/12 9:41:56 PM] Matt Yeager: By how much does the spring stretch if it pulls on the sled at 29.0 a...

Why B(CH3)3 cannot be Lewis Base??

An EM wave has a wavelength of 620 nm. What is its frequency? How would we classify it?

A merry-go-round with r = 4m and a perfect frictionless bearing is pushed with a force of 24 N by a young girl. She pushes with a constant force that is oriented tangentially to the edge of the merry-go-round. After she pushes the merry-go-round through 1...

Foundations Of A Healthy Lifestyle PF answers.

B is between A and C. Solve for x, if AB=2x+6, BC=4x-3, and AC=5x+12

In a titration of 35.00 mL of 0.737 M S, __________ mL of a 0.827 M KOH solution is required for neutralization.

For y= 2x squared + x - 1 the x-intercepts and the turning point respectively are?

lim (2Q^(2)+5)/(q+2) q->2 lim |y+3| y->-3

An unknown solution may contain one of the ions of the pair below. Devise a test which allows you to distinguish between the ions. Cu2+(aq) and Co2+ (aq)

The crate, m=68kg, is pushed up an incline, θ=24degrees, at a constant velocity with Fp=500N. μk=?

Mike and Lani stand 21.2 meters apart. From Mike’s position, the angle of elevation to the top of the Eiffel Tower is 40°. From Lani’s position, the angle of elevation to the top of the Eiffel Tower is 38.5°. How many meters high is the Eiffel Tower? Roun...

A 12 foot ladder leans against a building. The top of the ladder leans against the wall 10.5 feet from the ground. What is the angle formed by the ground and the ladder? Assume its a right triangle.

Calculate Kp at 298K for the reaction SO2 + NO2--->SO3 + NO

How does Kurt Vonnegut address the concept of equality differently in “Harrison Bergeron” than Martin Luther King Jr. does in “Letter from Birmingham Jail”? What relationship does Vonnegut’s story show between equality and personal freedom/individual achi...

A 1.13 kg ball is connected by means of two ideal strings to a vertical, rotating rod. The strings are tied to the rod and are taut. The upper string is 24.0 cm long and has a tension of 31.5 N, and it makes an angle θ2 = 51.0° with the rod, while the low...

A 1000 kg car rounds a curve of radius 70 m banked at an angle of 12°. What is the magnitude of the friction force required for the car to travel at 82 km/h?

A production crew is assembling a three-level platform inside a stadium for a performance. The platform has the dimensions of 4x long and 2x wide, the middle box has the dimensions of 6x long and 4x wide, and the bottom box has the dimensions of 8x long a...

A hockey puck is hit on a frozen lake and starts moving with a speed of 12.2 m/s. Ex- actly 6.70 s later, its speed is 6.20 m/s. The acceleration of gravity is 9.81 m/s2 . a) What is its average acceleration? Answer in units of m/s2

A trough is 15 ft long and 4 ft across the top, as shown in the figure. Its ends are isosceles triangles with height 3 ft. Water runs into the trough at the rate of 2.5 ft^3/min. How fast is the water level rising when it is 2 ft deep?

The drag, D, on a sphere located in a pipe flow through which a fluid is flowing to be determined experimentally. Assume that drag is a function of the sphere diameter, d, the pipe dianeter, H, the fluid velocity, V, and the fluid density, p. a) What dime...

In a recent year, 16.3% of all registered doctors were female. If there were 47,600 female registered doctors that year, what was the total number of registered doctors? Round your answer to the nearest whole number.

One month Ivanna rented 5 movies and 3 video games for a total of $29. The next month she rented 2 movies and 12 video games for a total of $71. Find the rental cost for each movie and each video game. Rental cost for each movie? Rental cost for each vide...

The following questions refer to the following system: A total of 30.0 mL of a .10M solution of a monophonic acid (Ka = 1.0 x 10 ^-5) is titrated with .20M sodium hydroxide solution. 1) Before the titration begins, the pH of the solution is about A) 2 B)...

There are 60 coins in a box containing only nickels, dimes, and quarters. If there is one more than twice as many dimes as quarters, and the total value of all dimes is five cents less than the total value of all nickels, how many of each denomination are...

In order for a spacecraft to reach Earth's orbital velocity, it must achieve a speed of 17,500 mph in 610 seconds after its first stage burnout where it should have achieved a speed of 1530 mph. What percent increase in speed per second is necessary after...

It is important for Bob to have a gross salary in his fifth year of at least $100,000. He is promised salary increases of 3 percent per year in the second and third years and 5 percent thereafter. What must be his starting salary be to achieve his goal? M...

A father pulls his son, whose mass is 26.7 kg and who is sitting on a swing with ropes of length 3.27 m, backward until the ropes make an angle of 35.6° with respect to the vertical. He then releases his son from rest. What is the speed of the son at the...

1) Determine the force of gravitational attraction between the earth(m=5.98*10^24kg) and a 70-kg physics student if the student is in an airplane at 4.950 meters above the earth's surface.

Hi i am still in matric and i don't know myb i cn be a chef under this subj...or an jenourlist

If a 20 inch pully runs at 350rpms, what size does the second pully have to be to run at 3500rpms? I Don't remember the equation all I am looking for is the equation please

An algebra teacher is writing a test. There will be two types of questions: multiple-choice and open-ended. The multiple-choice questions take 3 minutes to complete and the open-ended questions take 12 minutes to complete. There must be at least 3 open-en...

1. Find the quotient -7 divided by 14/13 A.-2/3 B.-98/3 C.-1/2 D.-3/2

What is your opinion about companies that charge higher insurance premiums for their employees who have health risk behaviors (i.e Obese, Tobacco Users, etc.)?

Two times a number subtracted from its square equals 143. Find the number(s).

look at any mole, what is the ratio of particles of the numerator compared to the number of particles in the denominator?

I need 1 paragraph explaing where math came from for my uncle

WHICH STATEMENT IS TRUE? a) a right angle has a complement b)and obtuse angle has a complement c)the supplement of a right angle is a right angle d) every angle has a supplement****

Find the area of each rectangle wit the given base and height... A=lw 1) 4ft, 4in 2) 30in, 4yd 3) 2ft 3in, 6in 4) 40cm, 2m

Some hydrogen is collected over water at 10 degrees C and 105.5 kPa pressure. The total volume of the sample was 1.93 L. Calculate the volume of the hydrogen or reacted to STP.

What volume of coffee (pH =5.0) would be required to have .25 moles of H3O+ ions? (Hint: two step)

How would one work through this problem? -Calculate the number of liters of 1.25M solution that can be made from 6.400g of barium nitrate. - I know that it's just stoichiometry, but I'm confused. The formula for molarity is the number of moles of the solu...

In a set of 6 numbers, {-2, -1, 0, 1, 2, 3}, what is the probability the product of any two numbers is zero?

There are 3 red chips and 2 green chips. You win the game if you take out all the chips of the same color. What is the probability you take all the green chips out?

Calculate the area of the following triangles, giving your answers to 2 decimal places: (a) The right-angled triangle with sides a=16, b=63, and c=65. (b) The triangle with angle α = 40° and adjacent sides b=10 and c=20.

It is a number less than 50 it's a 2 didit number 3 is a factor of the number the sum of its digits is one third of the number

When reading aloud to a group of toddlers at the beginning of the year, why would the teacher choose to read a book that students may have already heard at home? A. The teacher wants the students to feel comfortable and it will help create a rapport. B. T...

A rectangular prism is being designed to have a volume of 36 cubic units. Find the minimum surface area in square units for the prism if the edge lengths are positive integers.

A) Write a numerator for each fraction to make the fraction close to, but not equal to, 1/2. Then, write another numerator to make each fraction close to, but greater than 1. 1) _/22 2) _/43 3) _/17 My Answers: 1) 10, I believe. 2) 20? I dont know, please...

Answers

The following answers were posted by visitors named Charlie.

i don't even understand what the problem is asking.

Thank you so much.

sorry I don't know what happened but I posted it again and the question is on there.

OK thanks. There is another part of the question that asks for the momentum of the 4 lb piece and I can't figure out how to solve that.

I'm still not getting the right answer. It asks to convert it to centimeters but even when I do that I am still getting it wrong.

MRIs use very powerful electo magnets>

Dude, That is a freakin HAAAAARRRDDD guestion. your in colledge right??

I looked at that sight and can see the tables but what I have is a table that show the heights of students in a class males on top females on bottom with heights out beside them. I have to make a cumulative frequency table from the data in my collumns I h...

I think sediment would build up on the valley floor and raise the elevation. And a lot more vegetation would grow. Am I close?

Wouldn't the ground soak up the water? The sediment would come from the surrounding mountains.

why 0.001? 1/100 is 0.01. I thought that was 1 %. Also is that pressure minus (-) or pressure (equals)?

Me and my french pen pal enjoy chatting about our opinions of things. Maybe one of her favourite films (?) are on of the worst in your opinion. So tell her your own opinion. We also like talking about what's in our town (where we live) and what we love to...

i'm doing the same problem and confused about the same thing, so i'll just wait for the answer

can i get some help here please? much appreciated.

I'm not doing the measuring, it's a graphing exercise, and I've been given the table of data. I was looking for confirmation of my choice of axes. But your extra points are well taken. Thanks for your comment.

Thanks so much! I got 4.82 which seems to be correct. Thank you again

i figured out the amplitude and the period, i just don't kno how to get to the other 4 with using simple harmonic motion equations

can u give me these in numbers please, i don't understand what formulas u wrote and what some of the stuff in ur formulas are

x+12+x-5+x=40 3x+7=40 3x=33 x=11 x-5+6 x+12=23 23, 11, 6

Ok thanks, but why isn't this true for an arm or leg?

What was the purpose of the phenolphthalein?

thankyou, srajmcgin

It's too hard. You should give up now

Answer is Counter Clock Wise

the cheapest pleese does it depend on when your going if so then for india in dec. and for england then july

How did you get the second one with 1/4?

Help me find c.

Thanx...Ms. Sue... I just wanted to know.

At what level, or what kind of figure skating team? You can just google this; I did and some I found are: Team USA (Olympic team), Talbot Figure Skating Team (for Talbot county Maryland), The Diamond Blades, Dartmouth University Figure Skating Team, and t...

Do you mean how hard you have to push the pedal? If so, it's hard to say. Cars may or may not have power brakes, airplanes may or may not have something similar. I'd think it also depends on how fast the plane is going, and crosswinds, etc.

thx a lot....this saved me alot of time

(1/8 )(16/81)(216/125) (2/81)(216/125) (2/3)(8/125) 16/375

x=1, y = -3, z=-2

Mult 1st eq by 3; x-2y+3z = 0 Mult 2nd eq by 4: 2x - 3y + 4z = 1 Add 2nd and 3rd: -4y+5z = 2 Mut 1st by 2: 2x-4y + 6z = 0 Add that answer and 3rd eq: -5y + 7z = 1 5(-4y + 5z = 2) + -4(-5y + 7z = 1) -20y + 25z = 10 + 20y - 28z = -4 -3z =6 z = -2 Sub into t...

Re type your question, I don't understand what you are trying to find.

The larger x values are to the right

The larger x values are to the right

I'm on the same problem and I'm having trouble solving it, can you go into a bit more detail.

The moon is about 240.000 miles from earth. What is this distance written as a whole number multiplied by a power of ten

oops wrong question.

The total volume of the platform is 1250 cubic feet.

That persons name is spelled Karen and she's in my math class. I didn't post the question under that name.

Thanks alot Damon :)

Mandate of Heaven

Got it. 8 quarters, 17 dimes, and 35 nickels. Thanks for the equations, that was what I had trouble setting up.

Thank you.That one had me stumped, but the way you explained it makes sense. 0.4%

WOW! Thanks, I had trouble setting up the equation to solve. But it makes sense, like when solving an interest problem.

V1P1/T1 = V2P2/T2 Temp in Kelvin and assuming room temp of 25C(298K) 7.5×150/293 = V2x1/298 V2 = 1144L Remeber to round your answer to 2 sig figs: 1.0 x 10^3

1) Planet Zero has a mass of 5.0*10^23 kg and a radius of 2.0*10^6 meters. What is the acceleration of gravity on planet zero? 2)Phobos, a satellite of Mars, has a radius of 11km and a mass of 10^16 kg. Its a bit lumpy, but let's assume its spherical to g...

You can always dig up an extra player

Thank you so much.

Sorry I messed up it was actually -7 divided by 14/3

idk im asking u omg

5/7=40/X (cross multiply) 5X=280 X=56 B

steve your n idiot

how about you learn some basic grammar first :)

look in your manual, all your answers should e there. That's how I found all my answers when I took driver's ed.

why don't you do it yourself? nobody is going to do your work for you!

if you look up the drivers manual online, you should find it.

whatever study field your heart desires. what do you think will make you happy to wake up to in the morning. what will make you love your job and your career choice? if you can see yourself happy with whatever it is then GO FOR IT :D

she should go through it cautiously and be smart about it. don't try to fix it then and there, do it gradually so she can get it done alright and efficiently. don't try to push it

Yes number two is correct.

I am sorry I think autocorrect changed it to that. It is supposed to so corrected no or reacted.

Thank you so much.

I believe that A is a good thing, but is it really a rule to be used in an A.U.P? I think not, the answer is B.

Nice answer you idiot.

No I'm having difficulty finding more. My first answer was originally A

First, Determine the number of moles you have of C6H6 (16 g / molar mass (78)) = .206 Moles C6H6 Now its good ol stoichiometry Using the formula given 2 moles of C6H6 produce the -6536 kJ .206 C6H6 * -6536kJ / 2 moles C6H6 = -673.208 (or so)

thanks that helped a lot

For part A #2 would it be 21.5?

@josh The hell did I just walk into?

Why are those people saying D? There is no D *chuckles* But seriously why are they saying D, it's just "A weak point in his character" which is C

It would be B because the boy is stuttering and talking awkwardly

I can't find where exactly in My text it talks about this

My text doesn't really have that but I will try right now

oh wait no! Is it B?

Ok idk why I put B that one is ridiculous and I read It wrong. Sorry lol. Is it A?