Sunday
December 4, 2016

Posts by Anna

Total # Posts: 2,597

Physics
A 250kg rollercoaster cart loaded with people has an initial velocity of 3m/s. Find the velocity of the cart at part A (10m high), B (35m), and C (44m) Assume that friction is negligible.
November 29, 2016

Physics
A 52 kg woman is standing in a 26 kg cart that is moving a velocity of 1.2 m/s S. The woman staying rest then moves at a velocity of 1m/s (E) what is the final velocity of the cart? I just ugh, don't even know how to even start answering the question as this deals with ...
November 18, 2016

physics
A 2.0 g bullet is shot with an initial velocity of 200.0 m/s into a board (I = 12.0 kg m2). The board is held still by a frictionless pivot a third away from its bottom end, as shown below. Assume that you can treat the board as a uniform rod. 1. What is the initial angular ...
November 16, 2016

Math
Liam earns 5% commission on all computer he sells this week he earned $500in commission .how much money did he sells in computers
November 14, 2016

Check spanish answers
I just took the test! anonomys is right! 100% accurate! Thank you!
November 14, 2016

Math
a rectanglular form is 3.5 meters long,2 2/5 meters wide and 2.5 meters deep.Tory filled it full of cement,leaving 25 centimeters space at the top.How many cubic meters of cement did Tory use?
November 8, 2016

ttu
the sum of the digits of a three digit number is12. the tens digit is 2 lessthan the hundreds digit, and the units digit is 4 less than the sum of the two digits. What is the number?
November 7, 2016

Spanish
Please help me and check my answers! Llene el espacio en blanco con el MANDATO apropriado. 1. ¡No _____ tú esas tartas! (TOCAR) toca 2. ______ Ud. la lista de ingredientes para el flan, por favor. (ESCRIBIR) escriba 3. No me _______ Uds. Esas cosas. Son mentiras...
November 5, 2016

spanish
Hola! I was wondering if someone could check my work! Llene el espacio en blanco con el MANDATO apropriado. 1. ¡No _____ tú esas tartas! (TOCAR) toca 2. ______ Ud. la lista de ingredientes para el flan, por favor. (ESCRIBIR) escriba 3. No me _______ Uds. Esas ...
November 5, 2016

Spanish
Hola! I was wondering if someone could check my work! Llene el espacio en blanco con el MANDATO apropriado. 1. ¡No _____ tú esas tartas! (TOCAR) toca 2. ______ Ud. la lista de ingredientes para el flan, por favor. (ESCRIBIR) escriba 3. No me _______ Uds. Esas ...
November 2, 2016

Physics
The mass of a spacecraft is about 480 kg. An engine designed to increase the speed of the spacecraft while in outer space provides 0.09 N thrust at maximum power. By how much does the engine cause the craft's speed to change in 1 week of running at maximum power? Describe ...
October 23, 2016

Physics
An object of mass m1 is placed on an inclined plane (angle theta above the horizontal) is connected by a string going over a pulley to a hanging object of mass m2. Determine the acceleration of the system if there is no friction between object 1 and the surface of the inclined...
October 23, 2016

Physic
Point B is 5.0 KM east of Point A. A cyclist leaves A and goes 3.0 km in a direction of 30 degrees to the north of east A. in what direction mus the rider go from this point to reach point B? B. what distance must be covered? please explain
October 22, 2016

Math7 grade
Wallpaper was applied to one rectangular wall of the photographer s studio. .The dimension of the wall are shown below 42 ft by 25.5 feet .If the total cost of the wallpaper was &771.21, what was the cost of the wallpaper per square foot.
October 22, 2016

Math 7 grade
Thank you I thought 3 pics but I wasn't sure
October 22, 2016

Math 7 grade
What met ode you used
October 22, 2016

Math 7 grade
3 ft apart it think from each other
October 22, 2016

Math 7 grade
Can somebody answer this
October 22, 2016

Math 7 grade
The photographer wants to display her photograph in her studio A wall in her studio is 10 ft wide .She wants each picture to be 3 feet apart .If she displays photographs that are 4"wide by 6" high . How many photographs can she display side by side on her wall
October 22, 2016

Literature Study
Whole quick check; A D C D D C B B A B C A
October 21, 2016

Math PLEASE HELP!
A small company invested $29,000 by putting part of it into a savings account that earned 3.9% annual simple interest and the remainder in a risky stock fund that earned 12.4% annual simple interest. If the company earned $1,513.50 annually from the investments, how much was ...
October 20, 2016

Chemistry
How much heat is required to melt 110g of ice at-45°C?
October 19, 2016

Chemistry
4380/15=292 Answer: 292 drops/tile
October 15, 2016

Chemistry
Rain drops fall on a tile surface at a density of 4380 drops/ft^2. There are 15 tiles/ft^2. How many drops fall on each tile? Answer in units of drops/tiles.
October 15, 2016

ENGLISH
how to put emphasis on highlighted words ? 1 Are you going to wear " this dress " at the reception ? 2 "Ann" put up the Christmas decorations 3 why can "you" never be at work on time ? 4 "John" looks after the children when Shelia is at ...
October 13, 2016

Spanish
In Columbia, _______. A. Children are not required to go to school B. Children are required to go to school until they are about 9 C. Children are required to go to school until they are about 14** D. Children are required to go to school until they are about 18 My answer, **
October 6, 2016

Math
Write the expression to represent the given situation.Be sure to define your variable. Sam currently has $150 in a saving account and is saving $10 per week
October 5, 2016

French
Is this right? true love letters you read were from me véritables lettres d'amour que vous lisez étaient de moi
October 2, 2016

statistics
In general, increasing the sample size (for example, from n = 4 to n = 50) will ____ the risk of a Type I error. (Assume alpha is held constant at .05.) Select one: a. decrease b. increase c. have no influence on
September 16, 2016

Social Studies
Compare the tactics used by the French troops in the French and Indian War with those of the American patriots during the Revolution.
September 12, 2016

PHYSICS
Two tugboats are towing as barge. Each exerts a force of 5.0 tons and the angle between two ropes is 30 degrees. Find the resultant force exerted the barge.
September 8, 2016

math
my real name is Lillianna my grandma just wrote it like that
September 7, 2016

math
how would you show his problem as a bar model A box of chalk and 2 staplers cost $10.3 boxes of chalk and 2 staplers cost $18.Find the total cost of 1 box of chalk
September 7, 2016

Math - vectors
Never mind! I got it
September 7, 2016

Math - vectors
For what value of t are these two vectors parallel? a) r = 4i + tj and s = 14i - 12j What I Know: vectors are parallel if one is a scalar multiple of the other. I need to find a way that r and s relate by finding what number you can multiply r by to equal s. What I Don't ...
September 7, 2016

Math
If a piece of equipment cost 21,000 new and the equipment was worth 75% of its new value after 4 years what is its salvage value after 10 years
August 25, 2016

Math
If a piece of equipment cost 21,000 new and the equipment was worth 75% of its new value after 4 years what is its salvage value after 10 years
August 24, 2016

Geometry
Point AC is parallel to Point DB at point O. DB and AC bisect each other. Triangle AOD IS CONGRUENT to triangle COB. PROVE.
August 15, 2016

math
" I am thinking of a number thrice my number minus 6 equals 66"
August 13, 2016

Math
Marian bought a 2 L bottle of fruit juice for 5.99 Isaac bought a 0.75 L bottle of the same juice for 2.95 Which was the better buy?Explain
August 10, 2016

French
Could someone who specializes in French help me to see if these are correctly written in the past tense. Thankyou!!! (: 1. J’ai passé mes vacances en Californie. I spent my vacation in California. 2 Nous sommes allé à la plage beaucoup. We went to the...
August 7, 2016

French
I need help with the correct translations in French (please check to make sure if I used past tense right or if it's not, suggest the appropriate change. 1. During the summer, I traveled to Baltimore, Maryland. - Pendant l'été , je suis allé &...
August 6, 2016

English
Which of the following sentences demonstrates a subject-verb-modifier pattern? A. Shelly served dinner after spending hours preparing a meal. B. Shelly, after spending hours preparing the meal, served dinner. C. After spending hours preparing the meal, Shelly served dinner. D...
August 1, 2016

Physics
I need to understand how to calculate the final 2 steps of this problem. Appreciate any help: For a circuit, consisting of a single battery and two light bulbs in parallel, what is the total resistance of the circuit if each light bulb has a resistance of 6.3 ohms? 1/Rt=1/R1+1...
July 21, 2016

Physics
Thanks. Pretty much what the photos in the book have, and what the professor said. Still don't understand. I appreciate your time.
July 20, 2016

Physics
The answer "use the right-hand rule" isn't working for my brain. I'd really like to understand how to answer the following: You can make an electromagnet by wrapping wire around a wire and connecting the ends to a battery. If the battery is connected so that ...
July 20, 2016

math
The angle of elevation to the top of a building is found to be 5 degrees from the ground at a distance of 4 miles from the base of the building. Find the height of the building to 4 decimal places.
July 19, 2016

Physics
Thanks, I'll keep checking with others for a formula. Appreciate your time.
July 19, 2016

Physics
I don't understand what formula to use for this question: Points A and B each have an electric potential of +9 V. How much work is required to take 1 mC of charge from A to B? Thank you
July 19, 2016

Physics
What is the electric field midway between an electron and a proton separated by 0.8 nm. Don't know what formula to use. Nothing on line is helping me get to the correct answer. Appreciate anyone's help. Thanks
July 17, 2016

Physics
Thanks. The link was blocked by my computer.
July 17, 2016

Physics
Thanks for letting me know that 3*10^8 is wrong. That's why my answer is wrong. So, will continue searching for what to use for c. Don't understand. Thanks again.
July 17, 2016

Physics
What is the wavelength of light in water if it has a frequency of 6.8 x 10^14 Hz? I don't know what formula to use and don't understand. I tried Lambda=c/v and got it wrong. Answer needs to be in nm. Thanks.
July 17, 2016

Physics
So for the 1st question, I answered Virtual, Erect, and Magnified. It is marked wrong. The 2nd question, I finally got Real, Inverted, and Reduced and it is marked correct. Still don't understand what to do about the first question. Thanks for trying to help me.
July 16, 2016

Physics
An object is located midway between the focal point and the center of a concave spherical mirror. Draw a ray diagram to locate its image. Is the image real or virtual, erect or inverted, magnified or reduced in size? Completely baffled by above question and the next question. ...
July 16, 2016

pre cal
Find the angle between the vectors u and v if u=i+4j and v=−i+2j.
July 14, 2016

pre cal
I've tried this and got - 0.9216353751380653 can you help me any further please?
July 14, 2016

pre cal
Find the angle between the vectors u and v if u = (-1,4) v = (3,-4) a. 155.93 b. 158.58 c. 158.13 d. 155.24 e. 157.17
July 14, 2016

Physics
6019 wrong 3325 wrong I can't afford any more wrong answers. Won't get any credit. Thanks again for your help. I'll try posting the question again and see if I can understand the formulas. I appreciate your time.
July 9, 2016

Physics
I'm still getting the wrong answer. I don't understand this at all. I tried re-posting in the hopes that someone can explain the formula so I can get the correct answer. Thanks very much!
July 9, 2016

Physics
A 95 gram piece of metal is heated to 98°C and placed into 200mL of water insulated at 20°C. If the equilibrium temperature is 27.20, find: The heat gained by the water. calories: _________ The specific heat of the metal. cal/(g°C): ________ Hint: 1 mL water has a ...
July 9, 2016

Physics
6,019.2 calories for the heat gained by water is incorrect. That has been my problem all along. Can't figure out the correct answer. Thanks, though.
July 9, 2016

Physics
A 95 gram piece of metal is heated to 98°C and placed into 200mL of water insulated at 20°C. If the equilibrium temperature is 27.20, find: The heat gained by the water. calories The specific heat of the metal. cal/(g°C) Hint: 1 mL water has a mass of 1 gram I have...
July 9, 2016

Physics
Thanks, that did it!
July 6, 2016

Physics
In calories 175 x .5 x 2 175 x 79.5 175 x 79.5 x 2 I know this is incorrect, but I can't figure out what is supposed to be multiplied. Thanks
July 6, 2016

Physics
thanks, still getting the wrong answer.
July 6, 2016

Physics
How much heat is required to convert 175 g of ice at -2°C to water at 2°C? I have no idea how to solve this. Nothing I've found in the book or on-line is helping. Can someone point me to how to solve? Thank you
July 6, 2016

Meths
Two cars travel to a place at 60 km/hr and 70 km/hr resp. The first car takes 11/2 hour more then the second car for the same journey find the length of the journey
July 6, 2016

Math 105
Suppose you are looking to buy a $10,000 face value 13-week T-bill. If you want to earn at least 3% annual interest, what is the most you should pay for the bill? Round your answer to the nearest penny.
July 2, 2016

physics
Correction. The Hour Hand is 2.31e-05 rev/s; the Minute Hand is 2.78e-4 rev/s. I've checked with 3 tutors and none of them have gotten an answer that works for the Second Hand rotational speed in rev/s. Thank you
July 1, 2016

physics
If an hour hand is .01667 rev/s, a minute hand is 2.78e-4 rev/s, what is the second hand rotation speed? I've tried everything and can't get a correct answer. Thank you
July 1, 2016

Physics
A 0.2kg toy car rolls down a ramp with a height of 0.7m. What is the speed of the car at the bottom of the ramp. At the bottom it hits a stationary car with a mass of .4 kg. The two cars have velcro bumpers and stick together. At what speed do the two cars move after the ...
June 29, 2016

Calculus
A box (with no lid) is to be constructed from a sheet of card board by cutting the squares from corners and folding up the sides. Suppose the original sheet of card board measures 16 inches by 16 inches. What would the size of the squares removed to maximize the volume of the ...
June 29, 2016

Physics
I'm really struggling trying to understand what formulas to use for the following: A satellite orbits the earth with a radius of 7000 km. (a) what is the acceleration of gravity at this distance? (b) what is the velocity of the satellite? (c) how long does it take the ...
June 29, 2016

Physics
Thank you
June 28, 2016

Physics
I'm really struggling trying to understand what formulas to use for the following: A satellite orbits the earth with a radius of 7000 km. (a) what is the acceleration of gravity at this distance? (b) what is the velocity of the satellite? (c) how long does it take the ...
June 28, 2016

Maths
The ratio of the number of adults and children during the performance is adults : children = 3:2 .For this performance find the ratio total cost of an adult tickets : total cost of a child tickets. give your answer in its simplest form
June 27, 2016

Physics
Thanks so much. Works perfectly!
June 26, 2016

Physics
I've figured out the first part that the v is 1.25 m/s, but even with that knowledge can't determine how to calculate the horizontal distance. Can someone help with a formula? You let a ball roll from rest from the top of a ramp sitting on a table. If the top of the ...
June 26, 2016

Reading
It's B, B, B. Thanks.
June 6, 2016

chem
a gas mixture is comprised of 32% oxygen and the rest is nitrogen. If the scuba tank is pressurized to a total pressure of 132 atm what are the partial pressures of the oxygen and nitrogen inside the tank? I'm having trouble understanding how to find partial pressures. Can...
May 30, 2016

chemistry
A 2.00 L flask is filled with propane gas (C3H8)at 1.00 atm and -15.0 Degrees Celsius. What is the mass of the propane in the flask?
May 24, 2016

Chemistry
How can I make 100ml 0f 2N of HCl? purity is 35% and density is given as 1.18 g/mL
May 21, 2016

ELA PLEASE CHECK ANSWERS!
"random" and "Asian Princess" are both correct.
May 19, 2016

Math
John?
May 18, 2016

Math
Ms. Sue??
May 18, 2016

Math
1st question: Which events are not independent? You toss three coins and get one head and one tail. You choose three different ice toppings for a sundae. You draw to colored pencils without replacement and get one red and yellow. You pull a yellow marble from a bag of marbles...
May 18, 2016

Chemistry
Sulfur trioxide can be produced by the reaction in the gaseous phase, sulphur dioxide with molecular oxygen in the presence of a catalyst. If 128 g branches of SO2 were placed in the presence of 16 grams of O2, that amount of SO3 will be theoretically formed?
May 17, 2016

World Geography
this is the main human activity that contributes to global warming massive dumping of pesticides into the oceans high demand and depletion of the world's oil supply burning of fossil fuels*** increase levels of chlorine poured into shorelines
May 16, 2016

Geography
a majority of the greenhouse gas emissions released into the atmosphere is composed of methane*** carbon dioxide oxygen nitrous oxide (my second guess)
May 16, 2016

Math120
5+6+9=20 5+6=11 11/20
May 16, 2016

Geography
I just put that as my answer and it was correct so...
May 16, 2016

Geography
which is not an impact of global warming on ecosystems population explosion among various species warmer weather causes some species to migrate out of their natural habitat in search of cooler temperatures certain species face extinction food supply increases***
May 16, 2016

math
Anyone please help me! Directions: Follow the instructions below to design a fair race for the new video game Animal Tracks. 1. Choose two animals with different speeds. You can choose from the chart that starts at the bottom of this page or do research to choose your own. (I ...
May 14, 2016

Chemistry
A current of 2 Amperes is past for 30minutes. Calculate the mass of sodium and the mass of copper deposited.
May 12, 2016

math
HOW should i start this im confused. The theater arts committee estimated that it would sell 200 tickets for its upcoming play. The committee actually sold 224 tickets. What was the percent error in the committee’s estimate? Round your answer to the nearest tenth of a ...
May 12, 2016

math
60/215= 28% is this correct?
May 12, 2016

math
Laketown had 215 inches of snowfall last year, but only 155 inches this year. What was the percent decrease in snowfall for Laketown to the nearest percent? A. 28% B. 39% C. 72% D. 139%
May 12, 2016

math
What is the value of x? x over 4 equals 14 over 16 x/4 = 14/16 x=3.5 ?!??
May 12, 2016

math
Raina is saving money to buy a game. So far she has saved $16 , which is one-fourth of the total cost of the game. How much does the game cost?
May 9, 2016

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