# Posts by Laura

Total # Posts: 1,267

**Science Technology**

the last sentence wasn't clear to me. Please explain.

**Science Technology**

Originally the camera was made to capture a moment in time quickly and exactly. Paintings often reflected the opinion of the painter in their art, however, photos show exactly what was happening. Photos can be biased but nonetheless they are real. Photography started becoming ...

**Science Technology**

I tried reading that but I don't understand

**Science Technology**

Can someone give me a brief explanation to why Cameras were developed ? Please make it short and simple.

**Science- Very Urgent**

And also what do u mean by will give rise to a ...

**Science- Very Urgent**

Thank you so much

**Science- Very Urgent**

is it reasonable to expect that these models will change again in time? Explain. Like the bohr diagram and etc;

**Science**

In what ways is Bohr's model of the atom similar to and different from Thomson's model? I still need someone to help me.. I don't know the similarities and differences..

**Science**

But I don't really know how they are similar or different..

**Science**

The Bohr Model has an atom consisting of a small, positively-charged nucleus orbited by negatively-charged electrons. I don't know about thomson's model.

**Science**

In what ways is Bohr's model of the atom similar to and different from Thomson's model?

**Chemistry**

787.6

**math**

Sandy measures the length of a hockey stick. she says it it 4 units long. what unit did she use? A. cubes B. inches C. feet D. yards

**Physics**

What is the momentum (in kg m/s) of a 131- kg football player running at a top speed of 9.9 m/s? What is the momentum of a 9.32- g rifle bullet traveling at 618 m/s

**Math**

Joe is making a rectangular mosaic with colored tiles. He will use 20 tiles to make his design. What are all the different arrangements of tiles that Joe could use to design his mosaic?

**Physics**

A highway curve with a radius of 800 m is banked properly for a car traveling 100 km/h. If a 1620- kg Porshe 928S rounds the curve at 220 km/h, how much sideways force must the tires exert against the road if the car does not skid?

**math**

43%

**(MCV4U) Vectors**

The air velocity of helicopter Hal is 200km/h due west. Hal's ground velocity is 180km/h in the direction N80*W. Determine the wind velocity. Please help! I know i should be drawing a diagram but I am very confused with how to do this question! Thank you!

**math**

A room measures 14 feet by 20. feet. How many tiles would it take to cover the deck if the square tiles measure 8.0 inches to the side?

**math**

cup 3/4 full 1/6 is poured out. what fractionof the whole bottle is poured out x fractions= whole # .

**physics**

Given the position function s(t) = t cos t, find the velocity function. Answer v(t) = -sin t v(t) = sin t v(t) = cos t - t sin t v(t) = cos t + t sin t

**Algebra**

Player lost 15 yards, gained 3,then 21 in three successive running plays. What was his total gain and loss

**science**

An object moves up and down the y-axis with an acceleration given as a function of time t by the expression a equals A sine of omega-t. , whereA. and omega. are constants. What is the period of this motion? Answer omega. 2 pi omega. omega squared times A. 2 pi over omega. ...

**math homework help**

motorcycle company invested 250,000 at 4.5% compounded monthly to be used for the expansion of their manufacturing facilities how much will available for the project in 3.5 years?

**Writing**

How are mobile computing, Web 2.0, and social media changing how IT systems are used?

**SS-my answers**

WORKS FOR CONNEXUS

**Health Information Management Statistics**

In September, the hospital has 23.652 admissions. Of these, 1,569 were readmissions. What is the hospital's readmission rate

**Algebra**

can you show how the equation is solved?

**Algebra**

A moving picture theater usually took in $220 an evening on ticket sales. The manager found out that by reducing the price of tickets by 5 cents, 200 more persons attended, and the box office receipts were $80 more an evening. How many persons attended before the reduction in ...

**Math word problem**

can you show how the equation would be solved?

**Math**

I understand the second step but how did you get the third answer?

**Math**

I need help with the below math problem. I have to write out the steps to show the answer. 2(x - 14) + 3 = 7x + 5

**History HELP! ASAP**

thanks,very helpful!

**History HELP! ASAP**

Congress's adoption of the declaration of independence confirmed a decisive shift in the conflict between the colonies and britain. Why did the colonies make this decisive breaak in 1776? In your answer, discuss some of the arguments for and against independence.

**History HELP! ASAP**

In the mid-eighteen century, how did native americans influence relations between european nations? between britain and the colonies?

**Chemistry**

In the SN2 mechanism, considering that the nucleophile attacks at the same time as the leaving group leaves, what would the effect of having a hindered (crowded) reaction center be on the rate of the reaction? Would you expect it to react slower or faster than an unhindered ...

**math**

tim has a det of $872.23. If he pays 40 percent of the debt this month and 50 percent of the remainder next month, how much does tim still owe?

**us history**

those are all right @iris. Just took the connexus test

**MATH :D**

I got 4,950 but my friend got 365 Start listing them out!!! 8)

**History**

Thanks!

**History**

How did tea change the life in Europe?

**math**

If you separate the socks with equal charges 4 x10-9 C until they’re 7 cm apart, what force will each sock exert on the other?

**Analytical Chemistry**

Match the following terms about analytical precipitations to their definitions: A.) Coprecipitation B.) Adsorption C.) Absorption D.) Gathering E.) Masking F.) Digestion G.) Peptization 1.) Inclusion or occlusion of impurities within a crystal. 2.) Binding of impurities to the...

**Chemistry**

Never mind, I figured out that it shouldn't make a difference. That's what I originally thought, but just wanted to clarify.

**Chemistry**

If say 70 mL of water is heated vs 100 mL of water, would the temperature be different or does the amount of the substance not make a difference on the temperature Thanks!

**physics**

The pulley is light and frictionless. Find the mass M1, given that M2 (7.00 kg) is moving downwards and accelerates downwards at 3.01 m/s2, that θ is 15.0°, and that μk is 0.270.

**English**

Can someone pleases explain what this sentence means...this sentence is talking about the middle class in France. "They viewed universal male suffrage as the ultimate concession to be made to popular forces, and they strongly opposed any further radical republicans and ...

**Physics**

A moving 3.20 kg block collides with a horizontal spring whose spring constant is 224 N/m. The block compresses the spring a maximum distance of 5.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.490. What is ...

**Physics**

it's still incorect.. can you explain it a bit more please?... Thank you for all your help.

**Physics**

A moving 3.20 kg block collides with a horizontal spring whose spring constant is 224 N/m. The block compresses the spring a maximum distance of 5.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.490. What is ...

**physics**

A moving 3.20 kg block collides with a horizontal spring whose spring constant is 224 N/m. The block compresses the spring a maximum distance of 5.50 cm from its rest position. The coefficient of kinetic friction between the block and the horizontal surface is 0.490. What is ...

**english**

Thank you

**english**

Thank you

**english**

I have to write an English paper discussing a current event; I chose Obama Care, but was told it is not a current event. I know the bill was passed in 2014, but discussions are still being posed about it and there are continuing developments, so why is this not a current event?

**physics**

A boy jumps at a speed of 16.0 m/s at an angle of 20.0 above the horizontal. How long does he stay in the air before touching the ground? A. 1.53 s B. 1.12 s C. 3.07 s D. 4.2 s

**physics**

Person A walks 6.0 m at an angle of 30 north of east. Person B walks 7.0 m at an angle of 42 west of north. How does the component of the displacement of person A along the north direction compare with the component of the displacement of person B along the north direction? A...

**physics**

Which of the following statements is a true statement? A. A vector can have positive or negative magnitudes. B. A vector's magnitude cannot be more than the magnitude of one of its components. C. If the x-component of a vector is smaller than its y-component then that ...

**Chemistry**

What is 0.7g of SO2 ..and how would you do this equation? Thanks,

**Chemistry**

How many moles in 0.7g of SO2 ..and how would you do this! Thanks

**World History**

Which remained strongly organized and grew more powerful as the Western Roman Empire collapsed? the military command the Christian Church the Orthodox Church the trade networks

**Math**

Evaluate the expression -4x3y given that x = 2 and y = -7

**physics**

A 0.355-kg object undergoing SHM has ax = 2.30 m/s2 when x = 0.235 m. What is the time for one oscillation?

**Physics**

A ball, of mass 0.3Kg, is held on the inside of a smooth hemispherical bowl at a height 0.09 m above the base. It is then released. Assuming there is no friction, the acceleration due to gravity, g, is 10 m/s2 and the potential energy is zero at the base of the bowl - What is ...

**English II**

Read the following poem and answer the question that follows. "Fame is a Bee," by Emily Dickinson Fame is a bee, It has a song— It has a sting— Ah, too, it has a wing. Of what literary device is this poem an example? A. Extended metaphor B. Onomatopoeia C. ...

**English II**

I think is B... But im not sure...

**English II**

Read the following poem and answer the question that follows. "I Like to See it Lap the Miles" by Emily Dickinson I like to see it lap the miles, And lick the valleys up, And stop to feed itself at tanks; And then, prodigious, step Around a pile of mountains, And, ...

**English (PLEASE I NEED HELP)**

Read the following short excerpt of student writing. Use your vocabulary and grammar knowledge to determine which suggestions you would make to improve his or her grammar and word choice. I really thought she loved me but I discovered her grave betrayal one afternoon. It was ...

**Grammar**

Read the following short excerpt of student writing. Use your vocabulary and grammar knowledge to determine which suggestions you would make to improve his or her grammar and word choice. I really thought she loved me but I discovered her grave betrayal one afternoon. It was ...

**English II**

Im between Affluent and Amicable..

**English II**

Read the sentence below and answer the corresponding question. Despite their differences, my father and mother had an __________ divorce. Which word best completes the sentence? adjunct affluent amicable amorous

**English II**

Is it D?

**English II**

Which of these sentences contains an oxymoron? A. Mr. Keynes was a workaholic who found vacations to be about as relaxing as six rounds wrestling with an alligator. B. Despite his desire to travel during his week off, Mr. Keynes was unable to think of any vacation spot as ...

**English II**

I think is C.

**English II**

from "EXTRICATING YOUNG GUSSIE" by P.G. Wodehouse She sprang it on me before breakfast. There in seven words you have a complete character sketch of my Aunt Agatha. I could go on indefinitely about brutality and lack of consideration. I merely say that she routed me ...

**World History**

Thank you Ms. Sue... Can you help me in this one? Which of the following contributed to the overthrow of the Umayyad dynasty by the Abbasid dynasty? A. The Umayyads failed to produce competent heirs. B. The Umayyad social policies were unpopular and led to revolts. C. The ...

**World History**

What impact did Emperor Constantine's establishment of the “New Rome” (Constantinople) have on the Roman Empire? A.The expense of building the new city impoverished the later Empire. B. The pope moved his headquarters from “Old Rome” to “New Rome...

**math**

1. -4ft/sec 2. 10 ft/sec and the ball is going down 3. going down 4. seconds 2 and 3

**chemistry**

calculate the lowest values of the energies of an electron, a neutron and a photon which allows diffraction from the (1,0,1) planes of silicon, using Bragg diffraction. lattice parameter 0.542nm

**Algebra 1 Math**

an insect flies 20ft in 1 s. how fast does the insect fly in miles per hour?

**chemistry**

If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the structure Y-:X:-Y could be abbreviated as XY2Z2. Classify these structures according to their shape. XY2Z,XY2Z2,XY2Z3,XY3Z,XY3Z2,XY4Z,XY4Z2,XY5Z The ...

**Chemistry**

If the symbol X represents a central atom, Y represents outer atoms, and Z represents lone pairs on the central atom, the structure Y-:X:-Y could be abbreviated as XY2Z2. Classify these structures according to their shape. XY2Z,XY2Z2,XY2Z3,XY3Z,XY3Z2,XY4Z,XY4Z2,XY5Z The ...

**Macroeconomics**

cost in 2005 is 15.00 cost on 2009 is 20.50 Consumer price index (20.50/15.00)x100=137 I understand that part but my professor said to measure inflation he gave the answer 37% divide 37/4=9.25% 4 number of years 9.25% annual rate inflation how did he get 37 I am confused

**Chemistry**

Microwave ovens emit microwave energy with a wavelength of 13.0 cm. What is the energy of exactly one photon of this microwave radiation?

**criminal justice**

Are truth-in-sentencing laws a good idea? What are their implications for crime control? for due process? for costs to the public?

**Criminal Justice**

I feel their personal feelings need to be set aside when dealing with criminals. But the second part of the question I am confused on

**Criminal Justice**

two questions.. 1a) How much discretion should prosecutors, judges, and parole board members have in administering the criminal sanction? b) What justifies the latitude given these individuals?

**Pre-Algebra**

You subtract add -36+24 and get -12

**Geometry**

Find the coordinates of the midpoint of a segment having the given endpoints. Then find the distance between the endpoints. 1. G(0,0), H(-3,4) 2. A(-4,-4), W(-2,2) 3. N(5,2), K(-2,8)

**Finance**

Mrs. Jones owns 100 shares of stock in Daimler-Benz valued at 16.5 Euros per share. What is the value in $U.S. of her stock if: 0.90 € = $1 Value of 100 shares at €16.5 per share 1,650.00 Euros Value of 1,650.00 Euros at 0.90 € = $1 is $1,833.33 0.70 € = $1...

**math**

7,176

**Geography**

2)a 3)e

**Geography**

1)The study of geography includes a)living in a dessert b)growing food c)predicting the weather d)studying people e) wearing protective clothing 2) which of the following country has no seaport a) Egypt b)Algeria c)Nigeria d)South Africa e)Uganda 3)about how many kilometers ...

**Informal logic**

suggests that Catherine’s local movie theater hardly ever shows romantic comedies

**Physics**

An object is moving with constant velocity -->v Which situation is impossible in such a circumstance? 1. One force acts on the object. 2. Three forces act on the object. 3. No forces act on the object. 4. Two forces act on the object. 5. Four forces act on the object.

**Physics**

Consider a coin which is tossed straight up into the air. After it is released it moves upward, reaches its highest point and falls back down again. Air resistance can be neglected. What force acts upon the coin when it is at its highest point? a. Force acting up and ...

**nau**

5. (TCO 9) You have been tasked with analyzing an extremely large amount of data and to ultimately produce a report to share with the board of directors. The data is currently in a text file and has over two thousand records of data. Explain how you would use Excel to analyze ...

**algebra**

1665.0 or 1675.0 gallon Is this correct

**chemistry**

Hi, I was hoping someone could double check a chemistry answer for me. I am trying to calculate the Ksp of Ag2CrO4. This question is based on a experiment to determine ksp experimentally. In the experiment the Ksp of silver chromate was calculated using a single displacement ...

**Pre Calculas**

A GARDENER HAS 60' of edging. She wants to use it to enclose a 120 square foot rectangular area. She does not have to use up all of the edging. what are the possible lengths that a side of the rectangle can have? Answer using interval notation. Hint: if the length of the ...

**Language**

The answers are... 1. C 2. B Just did the test. your welcome