Questions Asked on
September 27, 2014

chemistry
Calculate the empirical formula for compound ethyl butyrate (pineapple oil): C, 62.04%; H, 10.41%; O, 27.55% Can someone show me the steps?
asked by Emely 
Health Help?
1. A percentile rank represents the percentage of people who scored at or below the test score. True False 2. People who have high resting heart rates usually have high levels of cardiovascular fitness. True False 3. Resting heart rate is usually measured
asked by Anonymous 
Trig
A railroad tunnel is shaped like a semiellipse as shown below. A semiellipse is shown on the coordinate plane with vertices on the x axis and one point of intersection with the positive y axis. The height of the tunnel at the center is 27 ft and the
asked by Lisa 
chemistry
Determine the number of moles of H in 4.70mol H2O. Please help I tried different ways to do it and I got them all wrong.
asked by Oliva 
Algebra
A building is 2ft from a 9ft fence that surrounds the property. A worker wants to wash a window in the building 13ft from the ground. he plans to place a ladder over the fence so it rests against the building. he decides he should place the ladder 8ft from
asked by Amber 
chemistry
30 ml of sample of unknown strong base is neutralized after the addition of 12 ml of a 0.150 M HNO3 solution if the unknown base concentration 0.0300 M give the possible identities for the unknown base
asked by mathew 
chemistry
Hydrogen gas produced by this reaction is typically collected via water displacement, during which time the hydrogen gas becomes saturated with water vapor. If 238.4 mL of gas with a total pressure 1.27 atm was collected via water displacement at 29.4 °C,
asked by A 
chemistry
How do you calculate the mass percent composition of nitrogen in NO2?
asked by Carlos 
math
between which two square roots of integers can you find pi?
asked by Anonymous 
History
Why did the Hittites and others migrate from Central Asia to Mesopotamia? A They needed more land for growing populations B They were enlarging their empires C The Persian army drove them out D Climate change brought a mini ice age to Asia I think A.
asked by Amberr 
Chemistry
If you dilute 14.0mL of the stock solution to a final volume of 0.350L , what will be the concentration of the diluted solution? Before it, there was a question: How many milliliters of a stock solution of 5.60 M HNO3 would you have to use to prepare
asked by Danielle 
Chemistry
Please help! Calculate the standard change in enthalpy, ΔH°rxn, for the decomposition of calcium carbonate to calcium oxide CaCO3 (s) → CaO (s) + CO2 (g) Given that: ΔH°f CaCO3 (s) = 1206.9 kJ/mol ΔH°f CaO (s) = 635.1 kJ/mol ΔH°f CO2 (g) =
asked by Jane 
math
arnold has 24m of fencing to surround a garden, bounded on one side by the wall of his house. what are the dimensions of the largest rectangular garden that he can enclose? how do i solve this question please help step by step solutions please
asked by sunny 
chemistry
Imagine there is a tank of unknown gas that contains 53.31% carbon, 35.51% oxygen, and 11.18% hydrogen by mass. At 35.0 °C and 0.470 bar, 2.0 L of the gas has a mass of 3.3 g. Using this information, answer the following questions. a.) What is the
asked by A 
chemistry
Suppose 1.2x10^3 kg of C is mixed with 2.4x10^5g oxygen gas and carbon dioxide forms. 1. write the reaction and balance 2.which reactant is the limiting reagent and which reactant is in excess 3. How many grams of carbon dioxide will be formed.
asked by frank 
chem
What is the correct name of the compound that is incorrectly named 1chloro3pentyne?
asked by M 
algebra
The vendor of a coffee cart mixes coffee beans that cost $8 per pound with coffee beans that cost $4 per pound. How many pounds of each sould be used to make a 60pound blend that sells for $5.25 per pound? $8 coffee __________ $4 coffee __________
asked by Marc 
physics
A satellite of mass 205 kg is launched from a site on Earth's equator into an orbit at 200 km above the surface of Earth. (a) Assuming a circular orbit, what is the orbital period of this satellite? s (b) What is the satellite's speed in its orbit? m/s (c)
asked by Dallas 
chemistry
Air is 78.1% nitrogen, 20.9% oxygen, and 0.934% argon by moles. What is the density of air at 22 °C and 760 torr? Assume ideal behavior.
asked by A 
World History Answer Check
1. How did the Committee of Public Safety identify enemies of the state? A: The Committee of Public Safety indentified enemies of the state by the people who were under suspicion of betraying France. 2. Did the French Revolution live up to the revolution's
asked by Victoria 
chemistry
The halflife of oxygen15 is 124 s. If a sample of oxygen15 has an activity of 4800 Bq, how many minutes will elapse before it has an activity of 600 Bq?
asked by Anonymous 
Personal Finance (Math)
Becka borrowed $100 from her cousin at the rate of 6% per year. If the inflation rate was 2% that year, what is her cousin's actual rate of return on the loan? How do you work this out?
asked by Luis 
chemistry
A 8.50g sample of solid AlCl3·6H2O was heated such that the water turned to steam and was driven off. Assuming ideal behavior, what volume would that steam occupy at 1.00 atm and 100.0 °C?
asked by A 
physics
A small toy airplane is flying in the xyplane parallel to the ground. In the time interval t=0 to t=10.0 s, its velocity as a function of time is given by
asked by Anonymous 
CHEM
What is the IUPAC name for the molecule shown here? H I \ / C=C / \ I H
asked by M 
Math
A bag contains three black balls, four white balls and five red balls. Three balls are removed without replacement. What is the probability of obtaining a one of each colour b at least two red balls ?
asked by Ariyo 
physics
A small toy airplane is flying in the xyplane parallel to the ground. In the time interval t=0 to t=10.0 s, its velocity as a function of time is given by υ⃗ =(1.50m/s2)ti^+[13.0m/s−(2.00m/s2)t]j^.
asked by Anonymous 
physics
The barrel of a rifle has a length of 0.97m. A bullet leaves the muzzle of a rifle with a speed of 601m/s. What is the acceleration of the bullet while in the barrel?
asked by emily 
physics
A basketball player throws the ball at a 53degree angle above the horizontal to a hoop which is located a horizontal distance L = 2.4 m from the point of release and at a height h = 0.9 m above it.What is the required speed if the basketball is to reach
asked by karine 
chem
The electron in a ground state H atom absorbs a photon of wavelength 121.57nm, to what energy level does the electron move?
asked by sara 
chemistry
A 4.78g sample of aluminum completely reacts with oxygen to form 6.67 g of aluminum oxide Use this data to calculate the mass percent composition of aluminum in aluminum oxide. (Sorry need help with this!)
asked by Luis 
Algebra 1
Adding and subtracting polynomials. (6tt^4) + (9t+t^4) How do you solve this problem?
asked by Alex 
chemistry
in HNO3 titration, you add few drops of phenolphthalein indicator to 50.0 mL of acid in a flask. you quickly add 20.00 mL of 0.0547 M NaOH but overshoot the end point, and the solutions turn deep pink. instead of starting over, you add 30.00 mL of acid,
asked by shane 
Math
3x9=9x=( )= ( )
asked by Bryce 
Physics
Consider two toy cars. Car A starts from rest and speeds up with constant acceleration for a time delta t until it reached a speed of v and then continues to travel at this speed. At the moment car A reaches its maximum speed, car B, starting at rest from
asked by Wes 
Material Sciences
Given an aluminum shell perfectly bonded to a steel core, what is the thermal stress in the aluminum shell when the system is heated from the unstressed state (20∘C) to 180∘C? Consider only deformations in the axial directions. Give your answer in MPa
asked by qwerty 
physics
If the acceleration due to gravity on the Moon is 1/6 that what is on the Earth, what would a 100 kg man weight on the Moon? If a person tried to simulate this gravity in an elevator, how fast would it have to accelerate and in which direction?
asked by Iworlock 
Statistics
X is a normally distributed random variable X with mean 15 and standard deviation 0.25. Find the values xL and xR of X that are symmetrically located with respect to the mean of X and satisfy P(xL < X < xR) = 0.80. (Hint. First solve the corresponding
asked by Anonymous 
social statistics
a smoking researcher is interested in estimating the average age when cigarette smokers first began to smoke. Taking a random sample of 25, she determines a sample mean of 16.8 years and a sample deviation of 1.5 years. Construct a 95% confidence interval
asked by Kenya 
physcis
A pitcher throws a baseball horizontally from the mound to home plate. The ball falls 0.926 m (3.04 ft) by the time it reaches home plate 18.3 m (60 ft) away. How fast was the pitcher's pitch?
asked by kash 
physics
A geosynchronous satellite is one that appears to be fixed in the sky, a condition useful for telecommunications. If such a satellite orbits the earth at an altitude of 33000 km above the earth's surface, what is its centripetal acceleration? The radius of
asked by anna 
chemistry
A 8.80g sample of solid SnCl2·2H2O was heated such that the water turned to steam and was driven off. Assuming ideal behavior, what volume would that steam occupy at 1.00 atm and 100.0 °C?
asked by himesh 
Check my answers? Math help.
2. Write an integer to represent owing your friend $10. –10 *** –2 2 10 3. Write the sum as a product, then simplify the product. (–8) + (–8) + (–8) + (–8) ( 2(–8) + 2(–8) = –30 4(–8) = –32 **** 4(–8) = 32 5(–8) = –40 4. What is
asked by Sally 
physics
A basketball is thrown at 45° to the horizontal. The hoop is located 4.4 m away horizontally at a height of 1.1 m above the point of release. What is the required initial speed?
asked by anna 
chemistry
2NiS2(s)+5O2(g)=2NiO(s)+4SO2(g) 1. how many kilograms of NiO would be formed from the reaction of .0125 mol of NiS2? 2. How many grams of O2 are needed to cmpletely react with 3.74 g of NiS2.
asked by newsome 
physics
. A 90cm uniform lever has a load of 30N suspended at 15cm from one of its ends. If the fulcrum is at the centre of gravity, calculate the force that must be applied at its other end to keep it horizontal
asked by uchenna 
physics
It takes the elevator in a skyscraper 4.5s to reach its cruising speed of 11m/s . A 70kg passenger gets aboard on the ground floor. What is the passenger's weight before the elevator starts moving? What is the passenger's weight while the elevator is
asked by willia 
math
what is the prime factorization of 140
asked by anonymous 
computer science
Mr Ali has given a test to his class. He would like to have the average score for the class as well as the highest and lowest scores. Write a pseudocode to calculate and display these values. Then convert your pseudocode into a program by using any
asked by hanit 
Material Sciences
The energyseparation curve for two atoms, a distance, r, apart is: U(r)=−A/r^m+B/r^n Derive and expression for the stiffness of the bond at the equilibrium spacing, in terms of A, B, m, n, and r0. S=dF/dr at r=r0:
asked by qwerty 
math
Which is greater, the increase in miles driven between 1998 and 1999 or between 1999 and 2000? What is that increase? Data given: 199875,288 miles 1999117,391 miles 2000126,304 miles
asked by Amari 
Accounting Please help me
Bethany Link delivers parts for several local auto parts stores. She charges clients $0.75 per mile driven. She has determined that if she drives 2,100 miles in a month, her average operating cost is $0.55 per mile. If Bethany drives 4,200 miles in a
asked by Vanessa 
Physics
A police car is traveling at a velocity of 20.0 m/s due north, when a car zooms by at a constant velocity of 44.0 m/s due north. After a reaction time 0.700 s the policeman begins to pursue the speeder with an acceleration of 6.00 m/s^2. Including the
asked by Peanutbutter7 
math
What is 1/10 of 200?
asked by Bianca 
Engineering science
A water pump produces 9KL of water per hour at a height of 70 m above the pump.The pump is driven by a 3 KW electric motor.calculate. 1) The work done per hour 2) The work done per minute
asked by Thulani 
physics
An ambulance with a siren emitting a whine at 1600 Hz overtaken and passes a cyclist pedaling a bike at 2.44 m/s. After being passed, the cyclist hears a frequency of 1590 Hz. How fast is the ambulance moving?
asked by onon 
Math
Cal had 6 comic books. After he gave 1 comic book to each of his cousins, he had none left. How many cousins does Cal have?
asked by Bryce 
physics
A block of mass m = 3.60 kg is pushed a distance d = 2.60 m along a frictionless, horizontal table by a constant applied force of magnitude F = 11.0 N directed at an angle è = 28.0° below the horizontal as shown in the figure below.
asked by Anonymous 
physics
A pot with a flower falls out of a window box in a tall apartment building. It passes the top of a particular window with a velocity of 1.7 m/s. It passes the bottom of this window 0.2800 s later? How tall is the window (watch sign)?
asked by Jane 
chemistry
an electron in n=5 emits 4052 nm to what energy level does the electron move
asked by sara 
physics
An acoustic burglar alarm consists of a source emitting waves of frequency 28.0 kHz. What is the beat frequency between the source waves and the waves reflected from an intruder walking at an average speed of 0.095 m/s directly away from the alarm?
asked by onon 
Material Sciences
The energyseparation curve for two atoms, a distance, r, apart is: U(r)=−A/r^m+B/r^n Derive an expression for the equilibrium spacing, r0, as a function of A, B, m, and n.
asked by qwerty 
math
Freya doesn't like peppers, so she grew 0 peppers in her garden. She divided the peppers equally among her 4 cousins. How many peppers did each cousin get?
asked by Bryce 
Reading/language arts
Write a sentence for the given topic, using a form of one of the following linking verbs in each sentence: smell, sound, feel, taste, grow. Use at least one predicate noun or predicate adjective in each sentence. 1) (dificulty or ease of writing) can you
asked by Steven 
Chemistry
Please help me! I don't know how to do this at all. Calculate the enthalpy for the reaction: NO (g) + O (g) → NO2 Given the following known reactions: NO(g)+O3 (g)→NO2 (g)+O2 (g) 03 (g)→1.5O2 (g) O2 (g)→2O(g) ΔH°=198.9kJ ΔH°=142.3kJ
asked by Luca 
chemistry
a student mixes 4 reagents together thinking that the solution will neutralize each other . The solution is mixed together are 50 ml of 0.100 M of HCL and 100 ml of 0,200 M of nitric acid 500 ml of 0.0100 M ca hydroxide and 200 ml of 0.100 M rubidium
asked by mathew 
physics
In a TV set, an electron beam moves with horizontal velocity of 2.5 × 107 m/s across the cathode ray tube and strikes the screen, 44 cm away. The acceleration of gravity is 9.8 m/s2 . How far does the electron beam fall while traversing this distance?
asked by sara 
Business
The term that refers to doing any kind of business online is
asked by Sue 
Economics
Does this production possibilities curve reflect the law of increasing opportunity costs.explain
asked by Y 
math
I'm working on a school math project, and i need to make my own 2 plans, i know that you can split all 17.5 ct diamonds so that each pirate would get 4.375 ct diamonds but i want to know how i would split them up, like into to 1/2 s or 1/4 and i need
asked by Penguin.anna 
Material Sciences
A steel bar of length L and crosssectional area A is fitted between rigid supports. Write an expression for the stress in the bar when the temperature is raised by an amount ΔT. Write your answer in terms of α,E and ΔT. Is the stress compressive or
asked by qwerty 
PreCalc
Solve the system of equations using either the substitution method or the multiplication/addition method answer: 3x+2y=14 2x4y=4
asked by Anonymous 
chemistry
The complete combustion of salicylic acid releases 21.90 kJ of energy per gram of salicylic acid. In a particular bomb calorimeter (initially at room temperature), the combustion of 0.1182 g of salicylic acid, in the presence of excess oxygen, causes the
asked by korko 
physics
If a 1500 kg car stopped from an in 5.6 seconds with an applied force of 5000 N, how fast was it initially traveling?
asked by Iworlock 
Algebra
An herbalist has 40 oz of herbs costing $4 per ounce. How many ounces of herbs costing $1 per ounce should be mixed with these 40 oz of herbs to produce a mixture costing $2.20 per ounce? oz
asked by Terry 
physics
The roadway bridge over a canal is in the form of an arc of circle of radius what is the maximum car can cross the bridge with the ground at the highest point
asked by Abhishek Kumar 
statistics
According to U.S. News & World Report data, in 1995 tuition costs at Indiana University, a public university, were $2,984 per year, while the tuition costs at the University of Evansville, a private university in Indiana, were $11,800 per year. In that
asked by mike 
geometric sequence
The sum of the 2nd and 5th terms of a geometric sequence is 3.5. The sum of the 3rd and 6th is 7. Determine the ratio r of the sequence and the first term a.
asked by h 
physics
A spacecraft is in orbit close to the moon's surface. The centripetal acceleration is 1.6 m/s^2. If the radius of the moon is about 1.7 x 10^6 m, determine: a)the orbital speed b)the period of the orbit
asked by Claire 
physics
A state trooper chases a speeder along a straight road; both vehicles move at 160 km/h. The siren on the trooper's vehicle produces sound at frequency of 500 Hz. What is the Doppler shift in the frequency heard by the speeder?
asked by onon 
algebra
on an expressway, the recommended safe distance between cars in feet is given by 0.019v^2+v+14, where v is the speed of the car in miles per hour. Find the safe distance when the following takes place( round answer to three decimal places). v=35 mph
asked by Marc 
CHEM
H2C=CCCCH3 THERE IS AN H ATTACHED TO THE CARBON AFTER THE FIRST BONG THEN A H2 ON THE 2ND AND 3RD CARBON
asked by M 
Physics
A car travels 120 meters in one direction in 20 seconds. Then the car returns ¾ of the way back in 10 seconds. a) Calculate the average speed of the car for the first part of the trip. b) Find the average velocity of the car.
asked by Iworlock 
math
Find the sum of the first 60 terms of the arithmetic sequence whose first term is −15 and whose common difference is 7.
asked by gisela 
science
an empty truck with a mass of 3000 kg has a maximum acceleration of 1m/s2 .what will its acceleration be when it carries a load of 1000 kg?
asked by maziya 
Math plz help.
Write the letter of the property shown in each example. a. Commutative Property of Multiplication b. Identity Property of Multiplication c. Associative Property of Addition d. Identity Property of Addition e. Associative Property of Multiplication f.
asked by Anonymous 
physics
A ball falls 5.00 m to the ground. It remains in contact with the ground for 0.027 s and then rebounds to a maximum height of 1.61 m. What acceleration did the ball experience while it was in contact with the ground?
asked by Jane 
physics
A car travelling at 60 km/h hits a bridge abutment. A passenger in the car moves forward a distance of 67 cm (with respect to the road) while being brought to rest by an inflated air bag. What force (assumed constant) acts on the passenger¡¦s upper
asked by gregory 
Math
What is half of 850
asked by Ari 
TO Murgent
I named that compound as cis and it should be trans. The I atoms are on opposite sides and that's trans, not cis.
asked by DrBob222 
math
are the length of a side of a square and the area of the square related proportionally?
asked by Anonymous 
Marketing
I am creating my own company (clothing store) and have to create a circle graph and frequency table, and explain how they can help my company. I don't know what to put in them. I know a circle graph is often choosen to compare things like the cost of
asked by Meghan 
Calculus
Hello, my question is the following: The derivative of f(x) = ln(x) is given by f'(x) = 1/x. Find an equation of the tangent line to the graph y = ln(x) that passes through the point (0,0). So if I go through this using the typical method I use I have the
asked by Joshua 
English
How do I turn this into a really good thesis statement? In the myth " When Grizzlies Walked Upright" explain how the bears lived in relation to each other before and after the introduction of the female into their clan, and explain how both the bears and
asked by Sofia 
Math
4. What is the value of the expression below? 4 3  6 2 11 3 3 11 *** 5. Which word phrase could represent the variable expression 3d + 5? Let d = Beth's age. five more than Beth’s age times three three times Beth’s age minus five five times
asked by Princess Anna 
Math. I have a question.
Tom wants to build a pen in his yard for his dog. He buys 800 ft of fencing. He concludes that he can only build a rectangle with sides of 300 ft and 100 ft.
asked by Anonymous 
Biology
What is the water potential of a 5.7 L water in which 2.1 moles of NaCl has been dissolved at 30 degrees celcisus? Help please? Can you show work as well? It'll be greatly appreciated. Thanks in advance.
asked by Ali 
language arts poem by pat mora
how does the speakers mother fell about herself as a young girl
asked by clra 
math
midpoint (4,13) endpoint (0,6). find the other endpoint
asked by Ernie 
physics
A stone is thrown at 15 m/s an angle \theta below the horizontal from a cliff of height H. It lands 78 m from the base 6 s later. Find \theta and H.
asked by karine 
math
A rocket ascends at an angle of 60.0˚ with the horizontal. After 1.00 min it is directly over a point that is a horizontal distance of 16.0 km from the launch point. Find the speed of the rocket.
asked by syed 
Algebra 2
To estimate the size of a bear population on the Keweenaw Peninsula, conervationist captured, tagged, and released 50 bears. One year later, a random sample of 100 bears included only 2 tagged bears. What is the conservationist estimate of the size of the
asked by LadyG 
physics
The mass of a robot is 6930 kg. This robot weighs 2520 N more on planet A than it does on planet B. Both planets have the same radius of 3.01 × 106 m. What is the difference MA  MB in the masses of these planets?
asked by S 
math
If the area of a rectangle is 2,460 square inches, what are its dimensions?
asked by Daniel 
algebra 2
Solve each system of equation by grpahing? 3. y=3x+6 2y=10x36 4. y=x9 3y=5x+5
asked by anonymous 
Biology
Why does biomass decrease as we move up the biomass pyramid?
asked by A 
physics
An airplane is 50,000 m above an observer and 2.1 km to the west of them and 1.5 km to the north of you. Determine the angle to the plane in the x – y axis and the total distance to the plane from you. Choose the xaxis east, y axis north, and z axis up.
asked by Iworlock 
physics
Student wants to jump from their 3rd floor apartment window to the swimming pool below. The base of the apartment is 8.00 meters from the pool’s edge. If the window is 20.0 meters high, how fast does the student have to be running horizontally to make
asked by Iworlock 
Finance
1. What happens to companies with high operating leverage when the market declines? What happens when the market expands?
asked by Chloe 
physics
A ball is thrown at 14 m/s at 57° above the horizontal. Someone located 30 m away along the line3 of the path starts to run just as the ball is thrown. How fast, and in which direction, must the catcher run to catch the ball at the level from which it was
asked by karine 
us history
what are the four native languages in sc
asked by frederick 
Math 2questions
7. Find the sum. –14 + 7 + (–3) –24 –18 –10 *** –4 8. A scuba diver descends 350 feet and then another 120 feet. Express the diver’s final depth as an integer. –420 ft 420 ft ** –470 ft 470 ft
asked by Sally 
CHEMISTRY
Does a molecular compound in water have hydration or have ionization ?
asked by MAD 
US History
Women made many contributions during World War I. Which area did they make the least impact? Nurses in the war Heavy industry Maintaining farms Truck drivers
asked by Randy 
Biology
1. Describe 2 methods of viral infection 2. How can a virus be helpful to its host? Thank you:)
asked by Nicki 
Chemistry
500 g of Fe reacted with water to yield 4.2 g of H2. Fe3O4 was also produced in the reaction. What is the %yield of H2?
asked by Monika 
Business
What happens to companies with high operating leverage when the market declines? What happens when the market expands?
asked by Chloe 
Psychology
A recent research study found that surfing the internet and accessing nonacademic grades resulted in lowering students GPA. Dr. Rushmore studied the relationship between grades and nonacademic surfing in a firstyear introduction to psychology class.
asked by John Doe 
Math
Using the following cash flows for projects A and B, use payback period, discounted payback period, NPV, IRR, and MIRR to see if these are good projects or not. > Project A: (283,000); 46,000; 89,000; 104,000; 123,000; 187,000; and 72,000 > Project B:
asked by James 
business
Wellington’s Funds Flow Statement (Statement of Cash Flows) Sources Earnings after taxes $ 80 Depreciation 84 Decrease in accounts receivable 42 Increase in accounts payable 13 Increase in notes payable 196 Increase in accruals 22 Increase in longterm
asked by v 
astro
ProximaCentauriisapproximatelythesamedistancefromEarth(slightly less than 4.3 light years) as Alpha Centauri A, but it has an apparent magnitude of +11.05, compared to Alpha Centauri A’s magnitude of 0.01. How much more luminous is Alpha Centauri A than
asked by kennisha 
chem
/***\ \___/ hexane with a double bong in position 12 with 2 ch3 one on top one on bottom what would be the name of this
asked by M 
home economics
20 carriars in clothing and textile
asked by 20 carriers in clothing and textiles 
Science
Suppose a geologist is studying two distinct areas next to a spreading ridge. The magnetic direction of the minerals in the oldest area is opposite to the magnetic direction of minerals in the newest area. a) Which area is closest to the center of the
asked by Whitney 
Physics
A bike wheels rotate 4 revolutions. How radiant has it rotates?
asked by Jezsie 
physics
An electron in an atom has a speed of 2.2 × 10^6 m/s and orbits the nucleus at a distance of 5 × 10^11m.a)What is its centripetal acceleration? b)A neutron star of radius 17 km is found to rotate at 5 revolutions per second. What is the centripetal
asked by Diana 
ap physics
2.7s , how far do you travel during this inattentive period?
asked by anonymous 
chemistry
If 70.0 mL of water is added to 30.0 mL of 0.400 M solution of NaOH, what is the new concentration of NaOH?
asked by h 
Science
a car is moving at 80km/hr and slows down to 13km/hr in 9.75 seconds. Calculate the car's acceleration Formula for acceleration= Final speedInitial/Time
asked by Coleson 
quanta tive skills and reasoning
In a class of 250 students it was found that 140 took math 85 took psychology and 65 took both math and psychology how many students in the class took math or psychology?
asked by angie 
history
There were many examples that inspired the reformminded spirit after 1900. Which was not an example? Muckrakers Plessy v. Ferguson Triangle Shirtwaist Factory fire The Jungle
asked by Bob 
Math
Explain why the expression (x^2￼+ 6)  (x^3+3) , which seemingly can be simplified, actually cannot be simplified.
asked by Anonymous 
English
This is for "When Grizzlies Walked Upright" explain? How did the bears lived in relation to each other? How did the bears lived in relation to each other before and after the introduction of the female into their clan How did both the bears and the female
asked by Sofia 
Finance
What happens to the cash flow statement for a company operating on a calendar year when a sale is made in December but the firm isn’t paid until the following January?
asked by Chloe 
history
In the Seven Years’ War, Spain fought on the side of France right? Native Americans were unable to resist successive waves of European immigrants at least partially because they were divided among themselves. this is true right?
asked by Anonymous 
Math
1.) Find (f  g)(x) if f(x) = 2x  5 and g(x) = 4. 2.) Given f(x) = 4 and g(x) = 2x  1, find (f  g)(x). Thanks so much! :)
asked by Susie 
Health
What are positive attributes?
asked by Anonymous 
Simplify Practice.
Write the difference 30 – (–12) as a sum, then simplify. Evaluate the following expression. Show all steps. 18 + 6m for m = 2
asked by Anonymous 
Algebra 2
y1 ____ x+3 = 3/4 (equivalent ratio) can you explain the steps which you use to get this answer and why you use them . I am sorry I am a disable student and it hard some time to grasp this math fo rme.
asked by Gena 
chemistry
230Th+He____223Po+2 2H+ please complete this equation
asked by treasa 
math
what does this question mean : Sketch a graph to show four graphs in each family. a) y=(x3)(x+6) b) y= (x+1)(x+1)
asked by sunny 
algebra
1 cm to the third of aluminum weighs 2.7 grams if a sheet is 0.003 8 find the weight
asked by joyce 
algebra
on an expressway, the recommended safe distance between cars in feet is given by 0.019v^2+v+14, where v is the speed of the car in miles per hour. Find the safe distance when the following takes place( round answer to three decimal places). v=35 mph
asked by Marc 
math
The sides a,b,c of a triangle are such that a^2+b^2+c^2=ab+bc+ca.What type of triangle is it?
asked by Nitumoni 
Algrebra
A rectangular field is 3 yards longer than twice its width. If the perimeter is 156 yards. How wide is the field? 3*2=6 6*2=12 6*2*12=156 ??
asked by SJ 
English
What's the difference between the phrase: "It is not about you", and "It has nothing to do with you" Or do they necessarily mean the same?
asked by Levi 
physics
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.75 104 m/s, and the radius of the orbit is 5.15 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has
asked by Anonymous 
PreCalc
Help please Find f(2) and f(a+h) when f(x)=3x^2+2x+4
asked by Anonymous 
Math
explain why the expression (x^2+6) / (x^2+3) which seemingly can be simplified, actually cannot be simplified.
asked by Anonymous 
physics
5pi over 4
asked by tammy 
Math problems.
Use the order of operations to simplify the expressions in the next two questions. 15 – 6 • 9 ÷ 2 + 10 16. 4 • (6 + 3) + 5
asked by Anonymous 
Algebra 2
Please help me with this problem and can you write down the steps. y1 ____ x+3 = 3/4 (equivalent ratio)
asked by Gena 
Health
What are example of a psychosomatic response, when talking about stress?
asked by Anonymous 
Math one question?
A scuba diver descends 350 ft and then another 225 ft. Express the diver’s final depth as an integer. –525 ft –575 ft 525 ft 575 ft
asked by Anonymous 
math
Identify the solution(s) of the system of equations, if any. x + 5y = 6 6x  15y = 18
asked by Brenda 
history
Roosevelt addressed the struggles of industry with the National Industrial Recovery Act (NIRA). Which of the following was not one of the main components of this effort? African American labor assistance Public works projects National Recovery
asked by Randy 
Algebra
20 foot wire is cut so that the longer peace is four times longer than the shorter piece.what are the lengths of each piece?
asked by Kim 
Psychology
Would someone like to help me with it? T_T I need to identify the six principles of critical thinking in the following scenario...
asked by John Doe