Sunday

December 4, 2016
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*