Thursday

September 29, 2016
Total # Posts: 2,560

**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*

**electricity and magnetism**

a battery and two resistors R1 And R2 are connected in series . if R1 is 340ohms and the voltage across R2 is 39% of the battery voltage,find R2.

*May 8, 2016*

**math**

determine which ordered pair is a solution of y=2x-3.

*May 5, 2016*

**Language Arts**

"Happiness Is a Charming Charlie Brown at Orlando Rep" tells about the making of You're a Good Man, Charlie Brown. Like it explains how the play relates to the comic strip. So I am guessing it would be to inform. Because it gives specific details about who took ...

*May 5, 2016*

**World Geography**

Which of the the following is the basis of the traditional Aborigine economy? farming industry mining hunting and gathering***

*May 4, 2016*

**World Geography**

Which geographic feature of Cook Island benefits the growth of crops fertile, volcanic soil*** dry climate proximity to the ocean infrequent sunlight supports the growth of shade plants

*May 4, 2016*

**World Geography**

Which natural recourse is not a common and highly important food source throughout the Pacific Islands bananas cattle pork*** taro root

*May 4, 2016*

**World Geography**

The discovery of _________ caused the creation of new Australian towns jewels and diamands*** bronze pottery gold and mineral deposits furs

*May 4, 2016*

**World Geography**

This geographic feature is the primary reason for a budding economy on Cook Island beautiful beaches and pleasant climates*** beautiful volcanoes tropical plants unique population of fish

*May 4, 2016*

**World Geography**

Islanders living in Beqa, Fiji lived primarily by hunting and eating meat*** by fishing and cultivating tara by gathering nuts for exports by eating plants

*May 4, 2016*

**World Geography**

During the late 18th and mid 19th centuries, Europeans and North Americans were attracted to nearby coastal waters due to potential economic gains from catching trout and cod fish catching seals and whales shipbuilding finding riches on unexplored islands***

*May 4, 2016*

**Math**

Mai has a piece of cloth that is 8.35 meters long. How many 15 centimeter pieces can she cut from the cloth? How much will be left over?

*April 29, 2016*

**algebra**

why is f(x)=|x-5| not linear ??? and how can one figure out that it's not linear ???

*April 28, 2016*

**algebra**

what are the two requirements for a proportional relationship ????

*April 28, 2016*

**physics **

A 10kg block slides towards the 3kg moving block to create a totally inelastic head on collision. The 3kg block comes to a stop after the collision. 1. What speed must the 10kg block be moving at prior to the collision for this to occur? 2. Instead of sliding along a ...

*April 27, 2016*

**physics**

home / study / science / physics / questions and answers / a 10kg block slides towards the 3kg moving block ... Your question has been answered! Rate it below. Let us know if you got a helpful answer. Question A 10kg block slides towards the 3kg moving block to create a ...

*April 27, 2016*

**physics**

home / study / science / physics / questions and answers / a block of mass 3kg s sliding along the frictionless ... Question A block of mass 3kg s sliding along the frictionless horizontal surface with a speed of 2m/s. 1. What is the kinetic energy of the block? 2. A wedge is ...

*April 27, 2016*

**science 6th grade**

1.the nose diaphragm and lungs are part of the_________system circulatory excretory nervous respiratory(my answer)

*April 25, 2016*

**Economic**

A detailed explanation, with graphs of how the price of milk would have been determined in the absence of government involvement in market

*April 25, 2016*

**life orientation**

1 harassment 2.the arrests 3.sexual harassment

*April 18, 2016*

**Life orentation**

Right to education and health and work

*April 17, 2016*

**life orientation **

by being abused at home or any way of beaten and raped that's human rights violation and discrimination is to call the people by using bad names.

*April 13, 2016*

**physics**

A light spring of constant k = 95.0 N/m is attached vertically to a table (figure (a)). A 2.70-g balloon is filled with helium (density = 0.179 kg/m3) to a volume of 4.00 m3 and is then connected to the spring, causing the spring to stretch as shown in figure (b). Determine ...

*April 11, 2016*

**physics**

A 1.00-kg beaker containing 2.29 kg of oil (density = 916 kg/m3) rests on a scale. A 2.33-kg block of iron is suspended from a spring scale and is completely submerged in the oil (see figure below). Find the equilibrium readings of both scales. top scale N bottom scale N

*April 11, 2016*

**physics**

A light spring of constant k = 95.0 N/m is attached vertically to a table (figure (a)). A 2.70-g balloon is filled with helium (density = 0.179 kg/m3) to a volume of 4.00 m3 and is then connected to the spring, causing the spring to stretch as shown in figure (b). Determine ...

*April 10, 2016*

**physics**

A 1.00-kg beaker containing 2.29 kg of oil (density = 916 kg/m3) rests on a scale. A 2.33-kg block of iron is suspended from a spring scale and is completely submerged in the oil (see figure below). Find the equilibrium readings of both scales. top scale N bottom scale N

*April 10, 2016*

**physics**

Piston circled 1 in the figure below has a diameter of 0.28 in.; Piston circled 2 has a diameter of 1.6 in. In the absence of friction, determine the force vector F necessary to support the 500-lb weight. in lb i got 1.53 lb but it is incorrect

*April 10, 2016*

**physics- help me please **

The pressure at the bottom of a glass filled with water (ρ = 1000 kg/m3) is P. The water is poured out and the glass is filled with mercury (ρ = 13.6 ✕ 103 kg/m3). The pressure at the bottom of the glass is now which of the following? a)equal to P b)smaller ...

*April 8, 2016*

**physics- help me please**

Suppose you have two cubic meters of uranium, four cubic meters of lead, four cubic meters of copper. Rank them by mass, from smallest to largest. a)lead, copper, uranium b)uranium, copper, lead c)copper, uranium, lead d)uranium, lead, copper can someone help me

*April 8, 2016*