# Posts by Erin

Total # Posts: 696

**physics**

Is there no kinetic energy after Collison when the sand bag is swinging?

**math**

A train leaves LAX traveling 65 MPH and another train leaves NY traveling at 35 MPH…at what destination will they collide

**Chemistry**

94.94 mL

**Physics**

An ornamental thermometer, commonly known as a Galileo thermometer, contains a number of spheres of hollow colored glass, representing different temperatures, immersed in a column of ethanol. A particular sphere rises from the bottom to the top of the column of liquid when the...

**Biology**

Does the adrenal gland have any role in DIRECTLY DETECTING a change in the blood glucose level? Or is only the pancreas involved?

**Science**

Please help! Is Mgl2 Magnesium iodide or Magnesium Chloride, I am confused

**Science**

Are the following Ionic, covalent or both? NH4Cl and NaOH Thanks

**American History**

Passed in 1935, Roosevelt's most significant reform measure was the what?

**Physics**

Which of the following is the equation of the circle with centre (-1.5, 0.5) and radius 3? A. 2x^2 + 6x + 2y^2 - 2y - 13 = 0 B. 2x^2 - 6x + 2y^2 + 2y - 13 = 0 C. 2x^2 - 6x + 2y^2 - 2y - 13 = 0 D. 2x^2 + 6x + 2y^2 - 2y - 23 = 0 E. @x^2 + 6x + 2y^2 - 2y -14 = 0

**Physics**

A man of mass 75 kg lies on a bed of 10,000 nails. The tip of each nail has an area of 1.0 square millimeter. What pressure does the man experience? [g=10 N/kg]

**Physics**

An object of mass 50 g floats in a liquid of density 2.5 g/ml. When the object is placed in a liquid of density 2.0 g/ml, it sinks to the bottom of the container. What is the force that the object exerts on the bottom of the container? [g = 10m/s^2 = 10N/kg]

**Physics**

A uniform bar length of 2.0m and weight 1000 N has its center of gravity at its center. The bar is pivoted 0.5m from the right, and supports a weight of 200N on the opposite end (left end). What is the weight needed at right end of the bar to balance the bar?

**Chemistry**

What is the pH of a solution of NaOH 10^-12 M?

**physics**

A car moving with an initial speed v collides with a second stationary car that is 50.7 percent as massive. After the collision the first car moves in the same direction as before with a speed that is 33.2 percent of the original speed. Calculate the final speed of the second ...

**algebra 1**

The fraction is 1/4

**Physics**

Thank you!

**Physics**

Suppose you pluck a string on a guitar and it produces the note A at a frequency of 440 Hz. Now, you press your finger down on the string against one of the frets, making this point the new end of the string. The newly shortened string has 4/5 the length of the full string. ...

**Physics**

Alfonso and Sarah like to go sky diving together. Alfonso has a mass of 86.0 kg and Sarah has a mass of 57.8 kg. While in free fall together (next to each other), Alfonso pushes Sarah horizontally with a force of 12.9 N. What is the magnitude of Alfonso's horizontal ...

**Math**

Mr.Ferris discovered in his 2013 copy of the world records book that the worlds largest pizza measured 5.83 feet in diameter. A regular pizza measures 0.6 feet in diameter. How much greater is the area of the larger rice cake?

**Physics**

You throw a beanbag in the air and catch it 3.3 seconds later. How high did it go?

**Physics**

You throw a ball downward from a window at a speed of 3.6 m/s. What will the speed of the ball be immediately before hitting the sidewalk 8.3 m below?

**Physics**

The Lamborghini Murcielago can accelerate from 0 to 27.8 m/s (100 km/hr or 62.2 mi/hr) in a time of 3.40 seconds. How fast will the car be traveling (m/s) after 5.1 seconds.

**Physics**

28.2+2.2*9

**Physics**

A car with a velocity of 28.2 m/s is accelerated uniformly at the rate of 2.2 m/s2 for 9 seconds. What is the car's final velocity?

**Physics**

74-39.7/5

**Physics**

Find the uniform acceleration that causes's a car's velocity to change from 39.7 m/s to 74.0 m/s in an 5 second period of time.

**Math**

Solve for variable 3/8 = 7/ x+1

**math**

34+28

**Physics**

Two cars pass a school when a stopwatch reads zero. They both travel in the same direction. Car A travels at a constant speed of 98 km/h and Car B travels at 64 km/h. How many meters apart are the two cars when the stopwatch reads 2.0 hours?

**Physics**

You and a friend each drive 54 km. You travel at 95 km/h; your friend travels at 118 km/h. How many minutes will your friend have to wait for you at the end of the trip?

**chemistry**

A sample of nitrogen gas is confined in a 8.278 x 10-2 L container at 2.236 x 102 torr and 50 oC. How many moles of gas are present in the sample?

**education**

A)are the same as functional skills. B)are different from functional skills. C)exclude functional skills d)include functional skills

**education**

adaptive skills

**physics**

A weight lifter lifts a set of weights a vertical distance of 2.07 m. If a constant net force of 335 N is exerted on the weights, how much net work is done on the weights? Answer in units of J

**physics**

A 395.0 g block is dropped onto a vertical spring with a spring constant k = 252.0 N/m. The block becomes attached to the spring, and the spring compresses 0.29 m before momentarily stopping. While the spring is being compressed, what work is done by the block's weight? ...

**Physics - please help me..**

A 395.0 g block is dropped onto a vertical spring with a spring constant k = 252.0 N/m. The block becomes attached to the spring, and the spring compresses 0.29 m before momentarily stopping. While the spring is being compressed, what work is done by the block's weight? ...

**physics**

A 395.0 g block is dropped onto a vertical spring with a spring constant k = 252.0 N/m. The block becomes attached to the spring, and the spring compresses 0.29 m before momentarily stopping. While the spring is being compressed, what work is done by the block's weight? ...

**Physics Help..**

Thank you sooo much!

**Biology**

***I read the textbook assignment and I have read all the information on the lesson, however I cannot find the answer to this question. Nor can I find anything written about it anywhere in the lesson. Please help a girl out.*** True or False? There are many origins of ...

**Physics! Please help! :)**

A concave mirror with a radius of curvature of 0.61 m is illuminated by a candle located on the symmetry axis 2.61 m from the mirror. Where is the image of the candle? Answer in units of m

**physics**

A concave mirror with a radius of curvature of 0.61 m is illuminated by a candle located on the symmetry axis 2.61 m from the mirror. Where is the image of the candle? Answer in units of m.

**Chem**

Please help I have no idea how to do this. There are three different dichloroethylenes (molecular formulaC2H2Cl2), which we can designate X, Y, and Z. Compound X has no dipole moment, but compound Z does. Compounds X and Z each combine with hydrogen to give the same product: ...

**English**

Which words in the sentence make up the adjective phrase? Which word does the adjective phrase modify? The image on the previous page shows an outdoor mural that he painted. A. an outdoor mural; modifies shows B. on the previous page; modifies image C. the image; modifies ...

**college Algebra**

Reiny is right, this formula can't be right. Raising it to the power of x makes more sense.

**college Algebra**

Replace x with 50 and then multiply 78.5 x 1.001 x 50 to get your answer.

**Physics**

73.2N

**Math**

Solve the system of equations. 2x - 4y = 3 -3x + 5y = 1

**physics**

A softball player hits the ball and starts running towards first base. Draw a motion diagram, using the particle model, showing her position and her average velocity vectors for the first few seconds of her run.

**51**

51

**geometry**

RS=8y+4 ST=4y+8 RT=15y-9 a.) what is the value of y? b.)find RS, ST, AND RT

**Math**

A corporation has 7 members on its board of directors. How many different ways can it elect a president, vice president,secretary, and treasurer?

**geometry**

w]100

**chemistry**

If you have 156g of SO2, how many molecules do you have?

**statistics**

the probability that a football game will go into overtime is 17%. In 240 randomly selected football games, what is the mean and the standard deviation of the number that went into overtime

**Writing**

can you check my grammar and spelling? and does it look better? Erin Oldham Calvin Brown 20 March 2013 ASL 2 ASL 2 Research paper I am writing about interviewing three Deaf Persons for my ASL research paper. The first person I interviewed is Christian DeGuzman. He has been ...

**math**

A hot air balloon descends at a rate of 320 feet per minute for 3 minutes. Whats the balloons total change in altitude?

**Social Studies**

The spread of the factory system resulted in: A. an increase in home production B. increased exports of British cotton good C. poorer quality of iron D. improved working conditions in factories. The industrial Revolution created new jobs in all of the following expect: A. ...

**Social Studies**

Which of the following contributed to Britain's Industrial Revolution? A. Large Labor force C. powerful monarchy B. Decreasing food supplies D. decreasing money supply. The textile industry met its last major challenge to full mechanization with the development of ? A. a ...

**statistics**

Consider a normal distribution with mean 20 and standard deviation 3. What is the probability a value selected at random from this distribution is greater than 20?

**Early Childhood**

For my early childhood education final exam/Ideas? My teacher said i have to create my child and choose 1 out? For my early childhood education final exam/Ideas? My teacher said i have to create my child and choose 1 out of 5 (ADHD,Aspergers syndrome, Cerebral Palsy, and ...

**organic chemistry isomers**

which of the following molecules has a conformational isomer? CHCH CH2CH2 CH3CH2CH2CH3 CH2CCCH2 I think its either 2 or 4 but leaning towards 4. I just need help being more confident in my answer.

**Chemistry**

1. Calculate the pH of a buffer solution that contains 0.32 M benzoic acid (C6H5CO2H) and 0.17 M sodium benzoate (C6H5COONa). [Ka = 6.5 × 10-5 for benzoic acid] Round your answer to two places past the decimal. 2. A solution is prepared by mixing 470 mL of 0.18 M Tris&...

**Chemistry**

1. Calculate the pH of a buffer solution that contains 0.32 M benzoic acid (C6H5CO2H) and 0.17 M sodium benzoate (C6H5COONa). [Ka = 6.5 × 10-5 for benzoic acid] Round your answer to two places past the decimal. 2. A solution is prepared by mixing 470 mL of 0.18 M Tris&...

**grammar English**

I am writing about interviewing Deaf Persons for my ASL research paper. The first person is Christian DeGuzman. He is profoundly deaf since birth, and about 2 or 3 years old later they found out that he was deaf that’s why. Christian grew up in Bay Area, went to ...

**Honors Chemistry**

what volume of solution does a 3.0 molar solution need to have in order to contain 1.8 moles of sodium sulfate?

**English**

Please help me!

**English**

American Life, stereotypes? Just like television, commercial, etc. When we are watching TV, it gives us a "snapshot" of American life. If you look at the commercials alone, what would this tell you about how we live? I ask you to pretend that you are from another ...

**Math**

Please help! 1. A taxi cost $2.25 for the first mile plus .15 for each additional tenth of a mile. For a 5.2 mile trip Eric paid $10 and told the driver to keep the change. How much was the drivers tip? 2. 2 trillion is how much more than seven hundred fifty billion. Write the...

**Physics please help!!**

A cart of mass M1 = 5.00 kg and initial speed = 3.00 m/s collides head on with a second cart of mass M2 = 3.00 kg at rest. Assuming that the collision is elastic, find the speed of M2 after the collision. I have tried the answer 5.0 m/s however it says it is wrong. Please help!

**english romeo and juliet**

I am writing an essay which has to have 3 character traits of romeo and 2 quotes to support each trait. I still need quotes for impulsive and fearless. Can you please help?

**Math**

Thank you

**Math**

You have 34 math and science problems for homework. You have 10 more math problems then science, how many of each do you have?

**Math**

Factor the polynomial 4x^2- 81

**Physics**

A bicycle wheel of radius 0.30 m is spinning at a rate of 60 revolutions per minute. What is the centripetal acceleration of a point that is 0.11 m from the outer edge of the wheel?

**maath HELPPPP**

a ball is thrown into the air at a speed of 96 feet/sec. The equation that expresses the height of the ball as a function of time is: h(t) = -16t2 + 96t + 5 How long does the ball stay in the air after it is thrown? (Round answer to the hundreths of a second)

**math**

a ball is thrown into the air at a speed of 96 feet/sec. The equation that expresses the height of the ball as a function of time is: h(t) = -16t2 + 96t + 5 How long does the ball stay in the air after it is thrown? (Round answer to the hundreths of a second)

**Languege arts**

1. Which is the BEST summary of "LAFFF"? (1 point) Angela used a time machine to win a writing contest. Peter and Angela invented a time machine. Peter used a time machine to travel to the future. 2. The author describes Peter's Halloween costume in order to (1 ...

**Physics**

It's definitly 1J

**math**

The area of a parallogram is 128 sq miles . Find its base &height . 2x-4. 2x+ 4

**math**

What is a negative 588 divided by two numbers that equal the sum of 7?

**earth**

Convectioner

**help math**

A boat travels down the river in 3.0 hours. The return trip up river takes 3.6 hours. A one way trip down or up river is a distance of 23 miles. If the boat is traveling at maximum speed, what is the boats speed measured in waters with no current? You need to use systems to ...

**math quick help**

Bernie put in a garden in her back yard. The garden has a perimeter of 195 feet. She wants to know the total surface area of the garden and all she knows is the perimeter and that the width is 20% or (1/5) of the length. (Remember 20% and the fraction 1/5 is the same decimal ...

**help math!!!**

which one would represent the water with no current?

**help math!!!**

A boat travels down the river in 2.3 hours. The return trip up river takes 3.7 hours. A one way trip down or up river is a distance of 26 miles. If the boat is traveling at maximum speed, what is the boats speed measured in waters with no current? You need to use systems to ...

**math (precalc)**

Point S is 4 km west of point R, and point T is 4 km southwest of S. Find the bearing and distance from R to T. (If possible, show diagrams too, please! Thanks in advance.)

**Math**

Sue was in excellent shape in high school, she could ride her 10-speed bicycle 4.8miles to her grandmother's house in 11 minutes. Her return trip home took 14 minutes. The times are different due to there being a slight downhill slop on part of the trip to her grandmothers...

**Math**

How do you set this up? Solve the system using substitution: A boat travels 18 miles downstream in 1.5 hrs. It then takes the boat 3 hrs. to travel upstream the same distance. Find the speed of the boat in still water and the speed of the current. Thanks you!!!

**Chemistry**

What type of bonds(sigma or pi) and how many of each are used to form a triple bond?

**chemistry**

what theory describes how negatively charged electron orbitals orient around a positvely charged nucleus?

**English**

"I watched Hassan get raped," I said to no one. Baba stirred in his sleep. Kaka Homayoun grunted. A part of me was hoping someone would wake up and hear, so I wouldn't have to live with this lie anymore. But no one woke up and in the silence that followed, I ...

**English**

Sorry, "dozed" should be "dozen" in the quote .

**English**

"Well the two of us can have fun together," I said. Baba smiled. Winked. "Dress warm," he said. It should have been just the two of us--that was the way I wanted it--but by Wednesday night, Baba had managed to invite another two dozed people." (p. 87) ...

**Math 8R - HW Qs. Check**

(-2)2 = -4 (you said positive 4, I don't know if it was a typo, or...) Having said that, all should be correct... I'm confused. Did you copy the question correctly?

**College Physics 1**

A mass is oscillating on a spring with a period of 4.60s. At t=0s the mass has zero speed is at x=8.30cm. What is the value of t the first time after t=0s that the mass is at x=4.15 cm?

**social studies**

In early Korea what were the strongest influences?

**Math**

Can you please help me with this? Convert 36.7 lbs/in(3) to kilograms per cm(3). (There are 14.59 kilograms in 32.174 pounds and 61.02 in(3) in 1000 cm(3)). Thanks!

**social studies**

thank you so much!

**social studies**

what was Europe's major religion during the Enlightenment period?

**chemistry**

0.24 grams of benzene (C6H6) is dissolved into 4.9 grams of melted biphenyl. The freezing point of the mixture was determined to be 4.4 degrees below the freezing point of pure biphenyl. Based on these results, what is the Kf of biphenyl? (Use the standard units in your ...