Tuesday

July 22, 2014

July 22, 2014

Total # Posts: 59

**science**

Copper carbonate decomposes though heat to form copper oxide and carbon dioxide. Write the equation both in words and chemical symbols.

**chemistry**

A piece of magnesium weighing 48 grams is burned in air n 80 gram of magnesium oxide is formed. what mass of oxygen combined with the magnesium is in the reaction?

**Physics**

A 20kg box is pulled by a horizontal wire on a circle on rough horizontal for which the coefficient on the kinetic is 0.350.calculate the work down by friction during one complete circle trip if the radiudis 3m.

**physic**

Vector a magnitue of 7units and 45° .vector B has a magnitue of 10unit ant an angle of45° .what is a A+B

**physics**

A car (mass = 1150 kg) is traveling at 26.7 m/s when it collides head-on with a sport utility vehicle (mass = 2030 kg) traveling in the opposite direction. In the collision, the two vehicles come to a halt. At what speed was the sport utility vehicle traveling? Include units.

**gen physics**

A 152 kg boat is at rest in a calm lake at the end of a dock. A 85.6 kg person running down the dock leaps into the boat with a horizontal velocity of 4.58 m/s. Ignore all effects of friction and resistance due to the water. a) Find the kinetic energy of the person before jump...

**L.o**

5 ways in which the human or environmental problem impacts on the substance abuse at community .provide relevant sources to support your claims

**L.o**

5 ways in which the human or environmental problem impacts on the substance abuse at community .provide relevant sources to support your claims

**physics**

A 0.49 cm high object is placed 8.5 cm in front of a diverging lens whose focal length is -7.5 cm. What is the height of the image?

**physics**

A magnifying glass uses a converging lens with a focal length of 14.5 cm. It produces a virtual and upright image that is 3.3 times larger than the object. How far is the object from the lens?

**US History**

What was the purpose of the Washington Naval Disarmament Conference and the Kellogg-Briand Pact? What prompted them? Was the purpose accomplished?

**english**

Poem Styles: IVAN THE EVIL Use story clues to create a visual or poetic representation of Ivan. Be sure to represent actual details of IvanÃ¢â‚¬â„¢s appearance as conveyed by the story, such as his enormous bulk, his red sash, his lon...

**art history**

his enormous bulk, his red sash, his long beard, and his pointed teeth.

**Math**

if the interest rate on a home mortgage is 9%, then each month you pay 0.75% of the unpaid balance in interest. if the unpaid balance on one such loan is $60,000 at the beginning of a month, how much interest must be paid that month?

**physics**

what is the net electrostatic force on the charge q3 -48ìc due to charges q1 (+78µC) and q2 (+50µC)

**Physics**

Hypothetically, you are standing on the balcony of an apartment on the 10th level of a building and you throw a ball at some angle,è , above the horizontal away from the building. the ball lands on the ground 10m from the building, 3.2s after it was thrown. the height f...

**Physics**

Thank you so much Elena, so saved me. Beautiful name you have.

**Physics**

a large container holding 340g of water, initially 14°C is placed in a microwave oven. the magnetron in the microwave oven can produce 900W of electromagnetic radiation. the microwave is turned on for 3 minutes. assuming all microwave energy is absorbed by the water, how m...

**Statistics**

12. The proportion of students who own a cell phone on college campuses across the country has increased tremendously over the past few years. It is estimated that approximately 94% of students now own a cell phone. Twenty five students are to be selected at random from a larg...

**5th grade math**

They split the bill evenly. Three did not pay and that equalled 45cents (.45) .45/3=.15, so .15x 180 people equals $27.

**Physics**

Physics Report! What should i write..please help me need ideas !best answer!? Well First my report should be focused on Circular Motion OR Energy and momentum All the report says is to spend a day or two analysing the world around you in terms of Linear Motion / Newton's L...

**Math**

60

**Statistics**

ZInterval (11.69,12.31) average = 12 n = 360 upper limit is 12.31 according to my TI-83 Plus calculator

**Mathew **

My teacher says I have 10 trees and 5 rows I want 4 trees in each row?

**Calculus (Derivatives)**

I too was able to come to the derivative of 500/x^2

**chemistry**

Write the balanced chemical equation for the reaction of sodium bicarbonate with aqueous acetic acid to produce carbon dioxide, water, and sodium acetate. Follow the example set by the sodium bicarbonate.

**Stoichiometry**

The Answer submited by Dr.Bob222 is inncorrect. The limiting reagent is O2.There will be 1 mole of S remaining after the rxn. And thete will be 0 moles of 02 remaining(it is the limiting reagent so it will all be used in rxn). The final product will consist of 6 moles of SO3.

**non-Western Music**

What is meant by Caribbean music in a new mode?

**Math**

992.56

**Math/Statistics**

whatever!

**Math/Statistics**

Of 29 college juniors at State University, 13 preferred pepperoni pizza, 11 preferred supreme, and 5 preferred cheese. If we picked a college junior at State University at random, what is the probability that he or she would prefer cheese?

**Math/Statistics**

If the probability of seeing a moose in a day in a certain region of Alaska is 0.54, what is the probability of not seeing a moose in a day there?

**Math/Statistics**

If the odds of winning a raffle are 13:225, what is the probability of winning?

**Math/Statistics**

According to the U.S. census bureau, the total 2008 U.S. population was 303,824,640. The chart below summarizes the 2008 population for five U.S. States: Missouri 5,911,605 Pennsylvania 12,448,279 Tennessee 6,214,888 Utah 2,736,424 Washington 6,549,224 What is the probability ...

**Math/Statistics**

A simple dartboard has three areas…the main board has a radius of 8 inches, there is a circle with a radius of 6 inches, and the bullseye has a radius of 4 inches. What is the probability of a random dart landing inside the bullseye?

**Math/Statistics**

A certain drawing states that the odds of winning are 15:270. What would be the odds against winning?

**Math/Statistics**

The property restoration company PuroServ is considering switching to new dehumidifiers. Their market research, considering the cost of the new machines and their efficiency, tells them that the switch would give them an 83 percent chance of making a $20,000 profit, a 10 perce...

**Math/Statistics**

Last fall, a gardener planted 68 iris bulbs. She found that only 58 of the bulbs bloomed in the spring. Find the empirical probability that an iris bulb of this type will bloom. How many of the bulbs should she plant next fall if she would like at least 60 to bloom?

**Math/Statistics**

A community 5K run will award $50 to the winner. 50 people enter the race, and they each pay an entry fee of $20.00. Assuming they are all equally likely to win , what is a fair price for the competition?

**Physics**

Two equal mass cars collide head to tail and their bumpers lock. One car has a velocity of 10 m/s and the other is at rest. What is the velocity of the two cars after the collision?

**Physics**

rotation kenetic energy is represented by rotK = 1/2Iw(omega)sqared

**Math**

3/4 full is the same as saying the aqarium is initially at 15 gallons of water.there are 4 quarts in 1 gallon. To fill the aquarium up will take 5 more gallons! 2quart pitcher times 5 equals 10 times will the Vashis have to fill the aquarium with a 2 quart pitcher. So 10 is th...

**Physics**

just a ball (nothing else is given for this ball) the ball is at rest 10 m above the horizontal on a 45 degree smooth inclined plane. Vi= 0 m/s, height = 10 m, Vf =?

**Physics**

A ball starts from rest down a smooth (frictionless) 45 degree inclined plane 10 m above the floor. How fast will it be going when it reaches the floor?

**algebra**

sue bought 2 1/2 yards of blue cloth for $ 6.97 and 1 1/2 yards of yellow cloth by for half as much. She used 1/4 of the blue cloth to make her mother an apron. How much cloth did it take to make the apron?

**math **

Anica and her friends are organizing a trip to the skateboarding championships.The bus they will rent to take them there and back will cost $500. Anica estimates that each person will spend $40 for meals and souvenirs. If p People go on the trip, what will be the total cost fo...

**physics**

what is the net electrostatic force on the charge q3 -48ìc due to charges q1 (+78µC) and q2 (+50µC)

**spanish**

el camarero te comunica los problemas

**8th grade math**

Carlos and maria drove a total of 258 miles in 5 hours. Carlos drove the first part of the trip and averaged 53 miles per hr maria drove the remainder of the trip and averaged 51 miles per hr for how many hrs did maria drive

**Business Management**

You have recently been hired as a new manager hired into a failing division in a company. The product line is outdated and losing market share, inter-departmental communication is adversarial, and competition for corporate funding is fierce. How are you, a new individual, goin...

**Chemistry**

what volume of nitrous oxide gas, N2O has the same number of atoms as 9.00 L of neon gas at the same temperature and pressure

**world history**

WHY DID THE ROMAN EMPIRE FELL

**Ordering decimals**

4. 0.425. 4.25 need help

**Ordering decimals**

4. 0.425. 4.25

**14 line 10 syllable poem**

i need to write the exact same thing.. can anybody help mme?

**physical science**

state the importance of valence electrons in the organizatin of the periodic table Since this is not my area of expertise, I searched Google under the key words "'valence electrons' periodic table" to get these possible sources: http://web.jjay.cuny.edu/~acar...

**physical science**

compare the positions of the electrons in bohr's model of the atom with their positions according to modern atomic theory. state the importance of valece electrons in the organization of the periodic table

**AP U.S. History 1920's immigration**

I'll probly use some of things u said in this....like how the immigrants spent most of there money on the boat ride to America...thanks

**Algebra 1**

A recipe calls for 2/3 cups of milk for 10 cookies.how many cups of milk are needed to make a 150 cookies?

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