Tuesday

October 21, 2014

October 21, 2014

Total # Posts: 1,119

**physics**

Someone in a car going past you at the speed of 35 m/s drops a small rock from a height of 1.5 m. How far from the point of the drop will the rock hit the ground? The acceleration due to gravity is 9.8 m/s2. Answer in units of m.
*October 21, 2014*

**physics**

A long, straight, current-carrying wire runs from north to south. If you know the direction of the current, how can you determine the direction of the magnetic field? a. Grasp the wire in your right hand with the thumb in the direction of the current, the four fingers will ...
*October 20, 2014*

**statistics**

How could you reword the research hypotheses below to null hypotheses?a. Smoking during pregnancy increases the risk of a child being born prematurely.
*October 14, 2014*

**Algebra**

Find an equation of the line containing the given pair of points (-2,-3) and (-9,-1) in slope-intercept form y=mx+b I think m=-2/7
*September 7, 2014*

**Business Law**

The furniture salesperson tells Paul Weinberg that the table he is admiring is solid cherry. Weinberg purchases the table, then discovers that it is not cherry but another wood stained to look like cherry. Does Weinberg have any legal resources? I said yes but I don't know...
*July 28, 2014*

**stats**

The ABC Self-Concept Inventory has a split-half reliability coefficient of 0.90, and the XYZ Self-Concept Inventory has a Spearman-Brown reliability coefficient of 0.90. If all other factors are equal, which instrument would you choose to use?
*July 26, 2014*

**Business Law**

Becky Friedman, while a minor, buys a cassette recorder for $35. The day after her eighteenth birthday she attempts to return it, claiming it does not meet her needs. Must the seller take back the cassette recorder? Why or why not? I said yes, because a contract involving a ...
*July 25, 2014*

**Physics**

never mind I'm an idiot
*July 11, 2014*

**Physics**

ive added the weight of the 2 painters, then subtracted the weight of the staging?
*July 11, 2014*

**Physics**

A staging that weighs 140 N support two painters, one 500 N and the other 520 N. The reading in the left scale is fl = 740 N. what is the reading Fr in the right hand scale
*July 11, 2014*

**Chemistry**

You are a work study student in our chemistry department. Amy, your supervisor has just asked you to prepare 250ml of 2.00M H2SO4 solution for tomorrow's undergraduate experiment. The Stock Solutions cabinet is under the Stockroom Explorer. You will find find a 2.50 liter ...
*July 10, 2014*

**Trig**

Use trigonometric identities to solve the equation csc^2x -(√3+1)cotx+(√3-1)=0 in the interval [0, 2pi]
*May 9, 2014*

**Grade 12 Math**

if a and b are unit vectors, and magnitude of vectors a +b = sq. root of 3, determine (2a-5b) dot (b+3a).
*May 8, 2014*

**math**

Some friends share a pizza.if they cut the pizza into fourths, will the slices be larger or smaller than if they cut the pizza into halves?
*May 8, 2014*

**History**

Can someone please help me? Thanks Select one way World War II changed the roles of women or blacks in the United States and South Carolina. Explain the change you selected. Provide examples of how these events changed South Carolina’s society.
*April 23, 2014*

**math**

Right triangle DEF has sides that measure x, x, and x squared for the some value of x. What is the area of triangle DEF to the nearest 0.1 square unit?
*April 20, 2014*

**History**

Can someone please help me? At least give me an idea. I really need some help I'm far behind and this one is really giving me trouble. Please help. Thanks. Select one reform movement from the Progressive Era. Describe the movement and its impact on South Carolina. Provide ...
*April 17, 2014*

**Investments**

Melissa Popp is thinking about buying some shares of R.H. Lawncare Equipment, at $48 per share. She expects the price of the stock to rise to $60 over the next 3 years. During that time she also expects to receive annual dividends of $4 per share. A. What is the intrinsic ...
*April 15, 2014*

**Physical science**

1) how does the electric force between two oposite charges changes when the distance between the charges is tripled? 2)how does the electric force between two oposite charges changes when the amount of one charge is doubled?
*April 4, 2014*

**Algebra II**

2c+6d=14 1/2c-3d=8
*March 23, 2014*

**Spelling**

What does VCCV and VCV mean in 4th grade words?
*March 17, 2014*

**math**

thanks Ms.Sue
*March 16, 2014*

**math**

please somebody explain the product of 6, and the sum of 4 and 5?I have to show if 6x4+5 is the right answer.
*March 16, 2014*

**math**

An architect was designing a rectangular room with a lenghth of 16ft,a width of 14ft,and a height of 10ft.what is the volume of the room?I added and got 40 cubic feet but not for sure if its right
*March 16, 2014*

**math**

Ms.whittier wrote the following on the board:the product of 6 and the sum of 4 and 5.sherry wrote the following expression,6x4+5.did she write the correct expression?why or why not.
*March 16, 2014*

**stat**

A physician routinely makes physical examinations of children. She is concerned that a three-year-old girl has a height of only 87.8 cm. Heights of three-year-old girls have a mean of 97.5 cm and a standard deviation of 6.9 cm (based on data from the National Health and ...
*March 15, 2014*

**math**

40 x $7.60 = 304
*March 8, 2014*

**UV**

the two lenses in contact are 45 cm away from the object and the distance of the object from the image is 110 cm. if one of the two lenses in contact has a focal length of 15cm, what is the focal length of the second lens? thanks :)
*March 8, 2014*

**physics**

You reach out a second-story window that is 17 m above the sidewalk and throw a 2-kg ball straing upward with 17 J of kinetic energy. Use g = 10m/s^2 Part A) What is the ball's gravitational potential energy when it is released? Use a height measured from the sidewalk. ...
*March 8, 2014*

**physics**

A jet plane takes about 56 s to go from rest to the takeoff speed of 120 mph (miles per hour). What is the average horizontal force that the seat exerts on the back of a 60-kg passenger during takeoff? First make sure that each of the values are in SI units. Use 1 mile = 1609...
*March 8, 2014*

**a**

A compter software retsilor used a matkup ratr of 30%. Find the selling price of a computer game that costs the retsilor 15 dollard
*March 5, 2014*

**physics**

An astronaut in full gear has a weight of 2900 N on Earth. Jupiter; weight on planet relative to earth is 2.53 and weight of a 150-lb person is 380. How much will the astronaut weigh on the Jupiter? W_{Jupiter} =________________ N Neptune; weight on planet relative to earth ...
*March 3, 2014*

**math**

sec tangent= 2 square root of 3/3 and sin tangent= -1/2; find cot tangent
*March 3, 2014*

**physics**

A planet has a radius of about 0.85 times Earth's radius and a mass of only 0.74 times Earth's mass. Estimate the acceleration due to gravity on the planet. Use M_{Earth} = 5.972 x 10^{24} kilograms and r_{Earth} = 6370 kilometers a_{planet} = ________________{m}/{s^2...
*March 3, 2014*

**physics**

The acceleration due to gravity on a certain planet is about 6.5 \frac{m}{s^2}. What would a 78-kg scientific instrument weigh on Titan? W_{instrument} =______________ N (no rounding up)
*March 3, 2014*

**physics**

A 470-kg satellite experiences a gravitational force of 850 N. Use M_{Earth} = 5.972 x 10^{24} kilograms and r_{Earth} = 6370 kilometers What is the radius of the satellite�s orbit? r_{orbit} = _____________kilometers What is its altitude? altitude = ...
*March 3, 2014*

**physics**

The gravitational force between two metal spheres with the same masses are in outer space is 60 N. How large would this force be if the masses of each sphere were cut to a fourth of its original value? F_{attractive} =_____________ N (no rounding up)
*March 3, 2014*

**physics**

Two spacecraft in outer space attract each other with a force of 45 N. What would the attractive force be if they were \frac{1}{5} as far apart? F_{attractive} = _____________N (no rounding up)
*March 3, 2014*

**math**

What is the acceleration due to gravity at a distance of 1.2 Earth radii above Earth�s surface? Use M_{Earth} = 5.972 x 10^{24} kilograms and r_{Earth} = 6370 km a_{gravity} =______________{m}{s^2}
*March 3, 2014*

**physics**

What is the acceleration due to gravity at a distance of 1.2 Earth radii above Earth�s surface? Use M_{Earth} = 5.972 x 10^{24} kilograms and r_{Earth} = 6370 km a_{gravity} =______________{m}{s^2}
*March 3, 2014*

**Math 102**

70%
*February 27, 2014*

**Chemistry**

What mass, in grams, of sodium carbonate is required for complete reaction with 8.35g of nitric acid to produce sodium nitrate, carbon dioxide, and water? [Show work]
*February 12, 2014*

**math**

Find the area for the circle (use 3.14 for pi). Show your work. Round to the nearest tenth. the radius is 23 yd 22. Find the circumference of the circle (use 3.14 for pi). Show your work. Round to the nearest tenth.
*February 10, 2014*

**forces**

Two teams of nine members each engage in a tug of war. The first team's members have average masses of 64 kg and exert average forces of 1350 N horizontally. The second team's members have average masses of 69 kg and exert average forces of 1365 N horizontally. (a) ...
*February 8, 2014*

**history**

Whoops I mean't would 3 be B? D A B D
*January 29, 2014*

**history**

Okay. Would 1 be D? and 3 be C?
*January 29, 2014*

**history**

I went back and re-read. and now i've came up with, 1. A 2. A 3. D 4. D
*January 29, 2014*

**history**

Please please check my answers? and correct if needed? Thanks! 1. Which of the following represents an argument for annexing Texas? (1 point) Another slave state would be added, causing political debate. Texas was an independent state, so a treaty would need a two-thirds vote...
*January 29, 2014*

**History**

Can someone please check my answers and help me correct them if they are wrong? Thanks! <3 1. Which of the following describes changes to the industry in South Carolina during the 1800s? (1 point) an increase of pottery factories building factories to turn raw cotton into ...
*January 28, 2014*

**vectors**

In an attempt to escape his island, Gilligan builds a raft and sets to sea. The wind shifts a great deal during the day, and he is blown along the following straight lines: 2.5 km 45° north of west; then 4.70 km 60° south of east; then 5.1 km straight east; then 7.2 km...
*January 27, 2014*

**physics**

An express subway train passes through an underground station. It enters at t = 0 with an initial velocity of 23.0 m/s and decelerates at a rate of 0.150 m/s2 as it goes through. The station in 210 m long. (a) How long is the nose of the train in the station? (b) How fast is ...
*January 26, 2014*

**college physics**

a) A light-rail commuter train accelerates at a rate of 1.25 m/s2. How long does it take it to reach its top speed of 80.0 km/h starting from rest? (b) The same train ordinarily decelerates at a rate of 1.75 m/s2. How long does it take to come to a stop from its top speed? (c...
*January 25, 2014*

**college physics**

A bicycle racer sprints at the end of a race to clinch a victory. The racer has an initial velocity of 10.0 m/s and accelerates at the rate of 0.600 m/s2 for 7.00 s. (a) What is his final velocity? (b) The racer continues at this velocity to the finish line. If he was 300 m ...
*January 25, 2014*

**college physics**

A bicycle racer sprints at the end of a race to clinch a victory. The racer has an initial velocity of 10.0 m/s and accelerates at the rate of 0.600 m/s2 for 7.00 s. (a) What is his final velocity? (b) The racer continues at this velocity to the finish line. If he was 300 m ...
*January 25, 2014*

**college physics**

An express subway train passes through an underground station. It enters at t = 0 with an initial velocity of 23.0 m/s and decelerates at a rate of 0.150 m/s2 as it goes through. The station in 210 m long. (a) How long is the nose of the train in the station? (b) How fast is ...
*January 25, 2014*

**Science**

Can someone please check my answers and if they are wrong can you help me fix them? Thank so much!! 1. Which of the following determines the strength of the force of gravity between two objects? Check all that apply. (2 points) the speeds of the objects the masses of the ...
*January 24, 2014*

**College Physics**

can you tell me how you got that? I have a test soon and I seriously dont get it
*January 23, 2014*

**College Physics**

Assume that an MX missile goes from rest to a suborbital velocity of 4.50 km/s in 30.0 s (the actual speed and time are classified). What is its average acceleration in m/s2? What is its average acceleration in multiples of g?
*January 23, 2014*

**Anatomy & Physiology**

I took A&P just last semester, had to learn every notch and curve on every single bone, it is a lot of hard work.
*January 23, 2014*

**Anatomy & Physiology**

it is prone
*January 23, 2014*

**college physics**

A commuter backs her car out of her garage with a constant acceleration of 1.20 m/s2. (a) How long does it take her to reach a speed of 1.60 m/s? s (b) If she then brakes to a stop in 0.8 s, what is her (constant) deceleration?
*January 23, 2014*

**accounting **

What does a business owner do when the cash balance approaches zero and there are bills to be paid? (Hint: look at the financing activities of the Cash Flow Statement and then look at the Retained Earnings statement) What does a business owner do when there is an accumulation ...
*January 14, 2014*

**Math**

what is constant of proportionality?
*January 8, 2014*

**GUESS MY RULE WITH LETTERS **

I CAN`T FIND OUT WHAT THE RULE IS I KNOW THAT THE LETTERS THAT ARE IN THE RULE ALL HAVE STRAIGHT LINES N THE ONES THAT DO NOT FIT ALL HAVE CURVES I JUST NEE TO KNOW WHAT THE RULE IS PLEASE SOMEONE HELP ME
*January 6, 2014*

**Math Quick Question**

i confess i like wiiliam mondrago
*December 8, 2013*

**MATH HELP **

A. (a^-2/3)^-t
*December 1, 2013*

**MATH HELP!!**

A. (a^-2/3)^-t B. (b^1/3)^3/5
*December 1, 2013*

**chem**

What volume of benzene (C6H6,d=0.88g/ml,molar mass=78.11g/mol) is required to produce 1.5 x 10^3 kJ of heat according to the following reaction?
*November 18, 2013*

**CHEMISTRY**

Calculate the volumeof benzene,C6H6,d=0.88g/ml,molar mass=78.11 g/mol isrequired to produce 1.5 x 10^3 kJ of heat according to the following reaction?
*November 17, 2013*

**Chemistry**

Complete these Brønsted-Lowry reactions: HSO4- + H+ <--> HSO4- +OH- <-->
*November 15, 2013*

**science**

Identify a viewpoint from the text that highlights the importance of biodiversity. Do you believe every species is connected to one another, as expressed in the text? Why or why not? Give an example of a case where the extinction of one species might effect the life of another.
*November 11, 2013*

**chemo**

How much heat (in kJ) does it take to melt 28.4 grams of ice at 0 °C and raise the temperature of the resulting water to 25 °C? Heat of fusion 334 J/g, Specific heat 4.184 J/g °C ?
*October 29, 2013*

**College probability and statistics**

The current license plates in New York State consist of three letters followed by four digits. ( i ) How many possible distinct license plates can there be? ( ii ) How many possible distinct license plates could there be if the letters O and I and the digits, 0 and 1 were ...
*October 12, 2013*

**physics**

Help please ! been stuck on this for hours. A model rocket blasts off and moves upward with an acceleration of 13m/s^2 until it reaches a height of 25m , at which point its engine shuts off and it continues its flight in free fall. 1) What is the maximum height attained by the...
*October 1, 2013*

**Social studies**

What company did parliament try to help with the tea act
*September 12, 2013*

**health**

D for both
*September 3, 2013*

**Math**

The regular admission price for an amusement park is $72. For a group of 15 or more, the admission price is reduced by $25. How many people need to be in a group to save $500? Need Answer step by step.
*September 3, 2013*

**math**

Sam bakes 10 trays of cookies using 8 cups of milk how many cups of milk does he use for each tray of cookies?
*August 27, 2013*

**math**

Seven friends share 3 liters of apple juice equally how much juice does each friend get?
*August 27, 2013*

**statistics**

The scores for standardized test are normally distributed with a mean of 300 and standard deviation of 39. If the test is given to 700 students, how many are expected to have scores between 300 and 378.
*July 25, 2013*

**Finance**

If upon retirement in 20 years Simon plans to invest $400,000 in a fund that earns 5%, what is the maximum annual withdrawal he can make over the following 15 years?
*July 22, 2013*

**math**

The answer to the maths question was: "age>21". Make up a question that could have this as an answer.
*July 20, 2013*

**math**

PsyDAG, The answer to the questions is 'age greater than', so you wouldn't say "the legal voting age is greater than 21." What other questions do you think you could create with 'age greater than' as the answer? Melissa
*July 20, 2013*

**math**

The answer to the maths question was: "age>21". Make up a question that could have this as an answer.
*July 20, 2013*

**History**

The creation of minority group status largely depends on: A. The nature of the contact situation B. The size of the dominant group C. Whether the dominant group is assimilationist or ...
*July 11, 2013*

**Alternative Sweeteners Help**

What is the relative difference in sweetness between sucrose and saccharin, tagatose, sucrolose, aspartame, neotame which is marketed as sweet n low, equal and nurtasweet, splenda?
*June 29, 2013*

**physics**

A man pushing a crate of mass m = 92.0 kg at a speed of v = 0.845 m/s encounters a rough horizontal surface of length scripted l = 0.65 m as in the figure below. If the coefficient of kinetic friction between the crate and rough surface is 0.357 and he exerts a constant ...
*June 3, 2013*

**math**

Make the equation 2x + 5x = 119 7x = 119 x = ? Times that number by 2 and 5 and you should get the two numbers
*May 28, 2013*

**Geometry Honors**

Can someone help me with Always, Sometimes, Never questions?? I have answered all of these, but I am not sure if they are right. 1. The base angle of an isosceles triangle are acute----Always 2. When the altitude and the median are drawn from the same vertex of a triangle, the...
*May 28, 2013*

**Geometry**

Can you help me with Always, Sometimes, Never questions?? I have answered all of these, but I am not sure if they are right. 1. The base angle of an isosceles triangle are acute----Always 2. When the altitude and the median are drawn from the same vertex of a triangle, the ...
*May 28, 2013*

**physics**

A square loop 23.5 on a side has a resistance of 2.80 . It is initially in a 0.575 magnetic field, with its plane perpendicular to , but is removed from the field in 35.0 .
*May 27, 2013*

**Chemistry**

A saturated solution of potassium nitrate in water is prepared at 70.0*C then cooled to 55.0*C how many grams of potassium nitrate crystallized--- how do I determine this using my graph with everyone's numbers
*May 8, 2013*

**math for business and finance**

What sinking fund payment would be required at the end of each three-month period, at 8% interest compounded quarterly, in order to amount to $20,000 within 5 years?
*April 29, 2013*

**english**

Some ancient and medieval works have several qualities present in novels. true or false.
*April 25, 2013*

**language arts & writing**

My apartment has 2 bedrooms. My apartment has 1 1/2 bathrooms. a)comma b)and c)or d)but e)because
*April 15, 2013*

**language arts & writing**

My apartment has 2 bedrooms. My apartment has 1 1/2 bathrooms. a)comma b)and c)or d)but e)because
*April 15, 2013*

**Help Please Stat-Math**

According to an airline, a particular flight is on time 75% of the time. Suppose 140 flights are randomly selected and the number of on time flights is recorded. Determine if you should use the Binomial model or Normal model to solve this problem. show work and write a ...
*April 13, 2013*

**Math-Stat Help **

In a random sample of 78 teenagers, 32 admit to texting while driving. Construct a 98% confidence interval for the percentage of teenager that text while driving. Start by showing that conditions for constructing a confidence interval are met. 1) Check conditions 2) confidence...
*April 11, 2013*

**algebra**

the local high school is setting up square-shaped lunch tables in the cafeteria. each table has an area of 12x^3-4x^2 square feet. if sqrt 3x+1 tables are put end to ed to form a banquet table, how long will the banquet table be? assume x>1/3 part 1: use theformula for area...
*April 10, 2013*

**math**

on a biology test a student answers 25 questions correct but doesnt pass. on second attempt he gets 37 correct. what is the percent of increase
*April 10, 2013*

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