Questions Asked on
October 10, 2013

Science Radioactive Dating
Which of the following statements about radioactive dating is true? a. Radioactive decay is the rate at which new atoms form. b. During radioactive decay, atoms break down, releasing particles or energy. c. The rate of decay of a radioactive element cannot
asked by Anonymous 
Physics
You are walking around your neighborhood and you see a child on top of a roof of a building kick a soccer ball. The soccer ball is kicked at 41° from the edge of the building with an initial velocity of 21 m/s and lands 59 meters away from the wall. How
asked by Jennifer 
Chemistry
Geologists can estimate the age of rocks by their uranium238 content. The uranium is incorporated in the rock as it hardens and then decays with firstorder kinetics and a halflife of 4.5 billion years. A rock is found to contain 82.7% of the amount of
asked by Becky 
consumer math
Alisha has a fiveyear car loan of $15,000 with an interest rate of 6 percent. If the interest is compounded annually, how much will she pay in total for her car?
asked by breanna ambre 
Inequalities (Math)
Sari has to read a book for English class by the end of the week. She wants to read at least 200 pages in the first 5 days of the week. On average, how many pages should Sari read per day to meet her goal? (1point) I think it's p
asked by Gabby 
Chemistry
Calculate the energy of a photon emitted when an electron in a hydrogen atom undergoes a transition from n = 6 to n = 1.
asked by Laurie 
Inequalities Answer Check
1. 2n > 14 Answer: n > 7? 2. (n/5)≥ 11 Answer: n ≥ 55 3. 3y ≤ 18 Answer: y ≥ 6
asked by Anonymous 
Algebra 9R (NYS)  HELP!!!!
A hotel charges $20 for the use of its dining room plus $2.50 for each lunch. An association is using the hotel for a meeting and charges its members $3 per person to attend. Four nonpaying members are invited as honorees. How many paying members must
asked by Laruen 
Math
A poster is 3 times a long as it is wide. A banner is 5 times as long as it is wide. Both the banner and the poster have perimeters of 24 inches. What are the length and width of the poster and the banner
asked by Johnny 
CHEMISTRY
1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air is 20.9% oxygen by volume, a. how many liters of air are needed for
asked by Anonymous 
biology
Which of the following statements is true? 1.Both unicellular and multicellular organisms are at risk of having too much water entering their cells if they are exposed to water containing no salts. 2.Only multicellular organisms have structures that enable
asked by Cassie 
science
What could the relative age of two rocks tell you about them? a. One rock is 10,000 years old, and the other is 8,000 years old. b. One rock is older than the other. c. They both have fossils in them. d. One rock is closer to the surface than the other.
asked by Anonymous 
AP physics c
A helicopter lifts a 63 kg astronaut 10 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. (a) How much work is done on the astronaut by the force from the helicopter? Incorrect: Your answer is incorrect. J (b) How
asked by please help 
Chemistry
1)Buttermilk has 9 grams of protein and 12 grams of carbohydrate per cup (237ml). Estimate the concentration in mol/L of protein using the fact that the average protein is 300 amino acids long and the average amino acid has a mass of 110 amu. 2)Lactose
asked by qwerty 
science
Calculate the weight of a person with a mass of 67 kg that is holding a 12 kg box on earth
asked by bobby 
Math
Salem and Eugene,Oregon, are 64 miles apart.If the distance on the map is 3 1/4 inches, find the scale of the map.
asked by anonymous 
Geography (Ms. Sue)
1). What were some of the objects traded or transported over the Silk Road? A: Some of the objects traded of transported included silk, gold, silver, ivory, jade, wine, spices, amber, linen, porcelain, grapes, perfumes, ostriches, and acrobats. 2). Why
asked by Anonymous 
physic
Draw the vector C⃗ =0.5A⃗ +2B⃗ .
asked by koram 
Calculus
A cup of hot chocolate has temperature 80 C in a room kept at 20 C.? After a half hour the hot chocolate cools to 60 C. a) what is the temperature of the hot chocolate after another half hour? b) when will the chocolate have cooled to 40 C? I think I know
asked by Ezra 
english
Which of the following best exemplifies Updike's own life experience as it is reflected in his short story "Son"?
asked by denaesia 
physics
Suzie (of mass 76 kg) is rollerblading down the sidewalk going 12 miles per hour. She notices a group of workers down the walkway who have unexpectedly blocked her path, and she makes a quick stop in 1.9 seconds. What is Suzie’s average acceleration
asked by Luke 
chemistry
Calculate the molarity (M) of a solution of the strong base RbOH if the hydroxide ion concentration is 0.000309 M.
asked by HELP ASAP PLEASE 
Geography (Ms. Sue)
What is the second largest ethnic group in Central Asia? A: The second largest ethnic group in Central Asia is Russian. However, the second largest ethnic group is also Kazakh?
asked by Anonymous 
Chemistry
The following questions concern the iconic Nestle Toll House Chocolate Chip Cookie recipe, shown below: 2 1/4 cups allpurpose flour 1 teaspoon baking soda 1 teaspoon salt 1 cup butter or margarine, softened 3/4 cup granulated sugar 3/4 cup packed brown
asked by qwerty 
Chemistry
The elements of which group in the periodic table release the most energy by gaining an electron? The elements of which group in the periodic table absorb the most energy when gaining an electron?
asked by Kara 
CHEMISTRY........
i TRIED TO DO IT, BUT MY ANSWERES ARE WRONG. Please show work and explain. 1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air
asked by Anonymous 
Chemistry
A metal foil has a threshold frequency of 5.45× 1014 Hz. Which of the colors of visible light have enough energy to eject electrons from this metal.
asked by Jake 
Physics
A ball rolling down a hill was displaced at 19.6m while uniformly accelerating from rest. If the final velocity was 5.00 m/s what was the rate of acceptation?
asked by Miranda 
Math
Solve the literal equation for a y=x(ab/ab)
asked by Helen 
Environmental Science
On Earth in the extreme northern and southern latitudes, how does the relationship between GPP and NPP change during an entire year’s time?
asked by Anonymous 
ALGEBRA 1
A nonstop bus ride from the bus station in Atlantic City, New Jersey, to the bus station in Albany, New York, took 6 hours. If the average speeed of the bus was 21 meters per second , what is the distance between the two bus stations, to the nearest
asked by Abby 
Physics
A person pushes a 16.0kg shopping cart at a constant velocity for a distance of 20.0 m. She pushes in a direction 28.0° below the horizontal. A 54.0N frictional force opposes the motion of the cart.
asked by Donna 
algebra
If Employee A logged 120 hours of travel in four years and Employee B logged hours of travel at a 20% higher rate, how many more hours did Employee B have than Employee A after 1.5 years?
asked by Anonymous 
FEEDBACK CONTROL SYSTEM
Figure below shows the block diagram of a dcmotor control system (note the dcmotor is represented by G(s)= K(s+3)/s(s+1)(s+2).The signal N(s) denotes the frictional torque at the motor shaft. a) Find the transfer function H(s) so that the output Y(s) is
asked by FeedbackHELP!! 
Physics
An block of mass , starting from rest, slides down an inclined plane of length and angle with respect to the horizontal. The coefficient of kinetic friction between the block and the inclined surface is . At the bottom of the incline, the block slides
asked by sied 
Chemistry
The following questions concern the iconic Nestle Toll House Chocolate Chip Cookie recipe, shown below: 2 1/4 cups allpurpose flour 1 teaspoon baking soda 1 teaspoon salt 1 cup butter or margarine, softened 3/4 cup granulated sugar 3/4 cup packed brown
asked by qwerty 
Chemistry
Please help and explain each problem. PLEASE!!!! 1. If 29.0 L of methane, CH4, undergoes complete combustion at 0.961 atm and 140°C, how many liters of each product would be present at the same temperature and pressure? 2 If air is 20.9% oxygen by volume,
asked by Anonymous 
Geography (Ms. Sue)
1). How can the geographic definition of a body of water affect economic relationships? A: The geographic definition of a body of water can affect economic relationships as it can cause allied countries to try to better only themselves. For example, if the
asked by Anonymous 
Physics
Consider two blocks that are resting one on top of the other. The lower block has mass m2 = 3.5 kg and is resting on a frictionless table. The upper block has mass m1 = 2.7 kg. Suppose the coefficient of static friction between the two blocks is given by
asked by Anonymous 
physics PLEASE HELP ME
A ball rolling down a hill was displaced at 19.6m while uniformly accelerating from rest. If the final velocity was 5.00 m/s what was the rate of acceptation?
asked by mariam 
math
Mary is baking cookies for her school bake sale. For every 5 chocolate chip cookies she makes 2 oatmeal raisin cookies. If she keeps this ratio, and bakes 84 cookies total, what will be the ratio of chocolate chip cookies to oatmeal raisin cookies?
asked by Anonymous 
Teacher Aide
A diagnosis of mental retardation means that a child a. can't read or write at a function level b. needs serious learning support in mental ability and behavior c. has a mental age equal to his or her chronological age. d. can never functional in normal
asked by Izhar 
Chemistry
What would be the speed of the following particles if they had the same wavelength as a photon of green light (λ = 500.0 nm)? Proton (mass = 1.673*10^(24)g) =_____ neutron (mass = 1.675*10(24)g) =_____ electron (mass = 9.109*10^(28)g) =_____ alpha
asked by Natalie 
chemistry
Calculate the equilibrium constant for the weak base C5H5N, if a solution of the base with an initial concentration of 5.74×103 M has a [C5H5NH+] of 0.00000283 M (make an approximate calculation assuming that initial concentration is equal to the
asked by HELP ASAP PLEASE 
Organic cChemistry
For each pair of molecules or ions, select the stronger base and write its lewis structure a) CH3S or CH3O b) CH3NH or CH3O c) CH3COO or OH d) CH3CH2O or H e) NH3 or OH I would really appreciate the help!
asked by Kourtnei 
chemistry
In my organic lab, we synthesized synthetic banana oil. I'm asked what gas escaped during the sodium bicarbonate washing and to write two reactions that took place during that operation. I know carbon dioxide escaped but I don't know how to write out the
asked by Wesley 
number theory, math
How many ordered pairs of positive integers (a,b) are there such that (4a1)/b and (4b1)/a are both integers?
asked by frm 
Math
Explain how you know whether an estimate of a product is an overestimate or an underestimate?
asked by Kyle 
chemistry
Calculate the [CH3CO2H] in a solution if it has a pH 3.21. CH3CO2H = CH3CO2 + H+
asked by HELP ASAP PLEASE 
Chemistry
Which nutrient is most abundant (by weight) in eggplants? Carbohydrates Fats Proteins Add up the total mass of carbohydrates, fats, and proteins in a serving of eggplant. What fraction of the eggplant's weight is made up of these ingredients? Which of the
asked by qwerty 
Physics
Highspeed motion pictures (3500frames/second) of a jumping 280ìg flea yielded the data to plot the flea's acceleration as a function of time as shown in the figure (Figure 1). This flea was about 2 mm long and jumped at a nearly vertical takeoff angle.
asked by Jordan 
reading interpretation
(1) After my interview with these four young people, I reflected on the quiet sense of "difference" I sensed with many of these Upward Bound students. (2) As a college teacher who has also taught seventhgrade science, I have some experience with the faces
asked by Cassie 
Calculus
The linear approximation to (1/sqrt(9x)) at x=0. What is y?
asked by Nate 
Brief Calculus
The position s of a point (in feet) is given as a function of time t (in seconds). s = −10 + t − 15t2; t = 8 (a) Find the point's acceleration as a function of t. s''(t)= I know this answer, it is 30 (b) Find the point's acceleration at the
asked by Kyle 
maths
a flagpole cast a shadow 18m long when the altitude of the sun is 54 degrees.what is the height of the flagpole
asked by michelle 
Math
In golf, the average score a food player should be able to achieve is called a par. par for a whole course is calculatedby adding up the par scores for each whole. Scores in golf are often expressed at some number either greater than or less than par. ms.
asked by Jenny 
Physics
We release an oil drop of radius r in air. The density of the oil is 640 kg/m . c_1 and c_2 for 1 atmosphere air at 20 C are 2.20* 10 ^4 (kg/m)/sec and 0.81 kg/m , respectively. How small should the oil drop be so that the drag force is dominated by the
asked by sied 
physics
Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The springmass system is compressed a
asked by mark 
math
This year the Sum of Mr. Bellinis age and his son's age his son's age is 38 years. 4 years ago, Mr. Bellini was 5 times as old as his son. How old is his son this year? How old is Mr. Bellini this year?
asked by Jade 
reading
Below is the last stanza of a poem, "Dover Beach," written in 1876 by Matthew Arnold. Ah, love, let us be true To one another! For the world, which seems To lie before us like a land of dreams, So various, so beautiful, so new, Hath really neither joy, nor
asked by Cassie 
Calculus
The radius of a circular disk is given as 24 cm with a maximal error in measurement of .2 cm. What is the percentage error?
asked by Nate 
statistics
5. Find the weighted mean of the following two samples. Sample 1: n = 5 and the mean = 20 Sample 2: n = 15 and the mean = 10.
asked by shanice 
Science
A researcher designs an experiment to determine if German Shepherds prefer pet doors that opens from the side or from the top. He installs two pet doors sidebyside in the same wall. The pet door that opens from the top is designed for pets up to 15
asked by me 
Algebra 1
For $46, Joel can rent a machine to make novelty buttons to sell at the county fair. The materials cost $0.39 per button. How many buttons must he sell at $1.40 each in order to make a profit. Identify the graph that shows all the possible answers. A: 45,
asked by Abby 
Physics
An archer is preparing to shoot an arrow. He grabs the center of the bowstring and pulls straight back with a force of magnitude F = 173 N. The upper and lower halves of the string form an angle α = 104∘ with respect to each other. Assume that the
asked by Anonymous 
Calculus 1
Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing
asked by Juan 
English
1. I went on a school field trip to Jeju Island. 2. I went on a school trip to Jeju Island. 3. I went on a study trip to Jeju Island. 4. I went on a study tour to Jeju Island. 5. I went on a study travel to Jeju Island. 6. I went on a field trip to Jeju
asked by rfvv 
math 5th
in the following addition problem, each letter stands for a different digit. Find the value of X, Y, and Z XYZ + ZYX _______ YYZY
asked by Karla 
Algebra 1
A cyclist can travel 29.6 miles in 2 hours. At this rate how many gallons will it need to travel 650 miles. A: 14.8 B: 22.2 C: 11.1 D: 16.2
asked by Katie 
Chemistry
How many moles of K2O are present in 40.0 mL of a 0.3 M K2O solution? I also need the formula, data, and answer.
asked by Jaret 
Chemistry
How many joules (J) are needed to increase the temperature of 43.0g of aluminum from 25 degrees celcius to 50 degrees celcius? (Cp of Al=0.90J/g degrees of celcius) I also need the formula, data, and answer.
asked by Jaret 
Physics
Consider an ideal spring that has an unstretched length l0 = 3.9 m. Assume the spring has a constant k = 20 N/m. Suppose the spring is attached to a mass m = 6 kg that lies on a horizontal frictionless surface. The springmass system is compressed a
asked by Anonymous 
chemistry
Calculate the pH of a 3.00×104 M solution of the strong acid HClO4. Round your answer to 3 significant digits.
asked by HELP ASAP PLEASE 
chemistry
Estimate the equilibrium constant for the weak acid HCO2H, if a 2.19×103 M aqueous solution of HCO2H has a pH 3.21 (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). HCO2H = HCO2 + H+
asked by HELP ASAP PLEASE 
Physics
A block of mass m1 = 27 kg rests on a wedge of angle θ = 54∘ which is itself attached to a table (the wedge does not move in this problem). An inextensible string is attached to m1, passes over a frictionless pulley at the top of the wedge, and is then
asked by Anonymous 
Calculus 1
Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing
asked by Juan 
Calculus 1
Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing
asked by Juan 
Physics
From the window of a building, a ball is tossed from a height y 0 above the ground with an initial velocity of 10.00 m/s and angle of 25.0° below the horizontal. It strikes the ground 3.60 s later. If the base of the building is taken to be the origin of
asked by emanuel 
Math
Make up a data set of at least 12 numbers that have the following landmarks Maximum 18 Mode 7 Range 13 Median 12 Make a bar graph of the data
asked by Kate 
math
the expression 10x^2+6x^3 is the result of applying the distributive property to the expression 2x^2(5+3x). write the expression such that you applied the distributive to your expression it will give the result presented 1) m^2(a+b)+m^3(a+b) for this I got
asked by Elle 
college statistics
2. A researcher has developed a new questionnaire for measuring dominance and would like to estimate the population parameters for the test scores. The questionnaire is administered to a sample of n = 25 subjects. This sample has an average score of mean =
asked by shanice 
Number Theory.,Math
How many ordered pairs of positive integers (a,b) are there such that (4a1)/b and (4b1)/a are both integers?
asked by frm 
Chemistry
Calculate the number of atoms in 46.0 grams of Calcium 9(Ca)
asked by Jaret 
psychology
The brain can be studied using: A. electrical, biochemical and magnetic means. B. radio frequencies, computers, and neurotransmission. C. neurotransmitting, electrical, and biochemical means D. biochemical, neurotransmitting, and magnetic means. I think
asked by glory 
math
When dividing 0.08 by 0.4 I come up with 5, but I need to show it in a graph. I can't figure out how to do this
asked by jade 
social studies
Please with the following: **Different between government and governance **What is meant by policy **wha is the paramount purpose of public administration Thanks!
asked by Tee 
physics
Object A is moving due east, while object B is moving due north. They collide and stick together in a completely inelastic collision. Momentum is conserved. Object A has a mass of mA = 17.5 kg and an initial velocity of = 8.50 m/s, due east. Object B,
asked by Ray 
english
im writing an persuasive essay on technological advances help teens an i cant figure a thesis please help me with a thesis
asked by kevin 
chemistry
Calculate the molarity (M) of a solution of the strong acid H2SO4 if the hydrogen ion concentration is 0.000244 M.
asked by HELP ASAP PLEASE 
chemistry
Calculate the [OCl] of a 7.03×102 M solution of the weak acid HClO (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). Round your answer to 3 significant digits. HClO = OCl + H+
asked by HELP ASAP PLEASE 
chemistry
Calculate the pH of a 5.75×102 M solution of the weak acid HCN (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). Round your answer to 3 significant digits. HCN = CN + H+
asked by HELP ASAP PLEASE 
Chemistry
I have a few question for my review. 1) How would you prepare 30.0 ml of 0.600M HNO3 From a stock solution of 4.00M HNO3? What volume in ML of the 4.00 M HNo3 will you need? 2) if a 83.5 & was repoarted for a reaction that could have produced 12.1 g of
asked by Matt 
Physics
A conical pendulum is constructed from a rope of length l and negligible mass, which is suspended from a fixed pivot attached to the ceiling. A small ball of mass m is attached to the lower end of the rope. The ball moves in a circle with constant speed in
asked by Anon 
Geometry
Simplify (6t to the fifth power) with whole expression in parenthesis to the 2nd pwr.
asked by Gelo G 
Calculus 1
Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing
asked by Juan 
Chemistry
when a boiling point is 120 digrees C, and melting point is 12, what is its agregate condition in 0 digrees?
asked by himan 
mathvenn diagram
In a survey of a TriDelt chapter with 50 members, 18 were taking mathematics, 37 were taking English, and 7 were taking both. How many were not taking either of these subjects?
asked by lisa 
Math Word Problem
During the summer throughout high school and for a year after, Lewis worked as a lifeguard at the beach. In that 5year period, he saw a total of 461 dolphins swimming in the distance. About how many did Lewis spot per summer in the 5 summers he worked?
asked by Jared 
Physics
At low speeds (especially in liquids rather than gases), the drag force is proportional to the speed rather than it's square, i.e., F = c_1*r*v , where c_1 is a constant. At time t = 0, a small ball of mass is projected into a liquid so that it initially
asked by aksh 
statistics
Find the operating characteristics of this system. An airport ticket counter has a service rate of 180 per hour, exponentially distributed, with Poisson arrivals at the rate of 120 per hour
asked by Kyrann 
Math PLEASE HELP FAST!
Use Compatible Numbers. 5,172/74= 1,891/32= 6,301/81= 5,232/5= 366/6= 19,008/64= 2,622/67= 461/91= 7,952/42= 2,759/30=
asked by Anonymous 
math
Space the length of one day on venus is 35 earthdays write a product and an exponent .
asked by gary 
Intro to ethics 120
he outlawing of slavery and extending voting rights to women seem to indicate that ethics can have beneficial results. Give an example from the past that indicates a similar result or a current social policy that might be regarded as wrong, which therefore
asked by Mark 
math
A Pythagorean triple is an ordered triple of positive integers(a,b,c) such that a^2+B^2=c^2.Find the number of the Pythagorean triples such that all the numbers a,b and c are prime?
asked by Pythagoras's triple 
Language Arts
2) Which of the following sentences is punctuated correctly? (1point) Since Maria is away in Spain, Mom said I may have her ticket to the concert.*** Since Maria is away in Spain, Mom said, I may have her ticket to the concert. Since, Maria is away in
asked by Gabby 
Biology
You wish to produce a human enzyme, protein A, by introducing its gene into bacteria. The genetically engineered bacteria make large amounts of protein A, but it is in the form of an insoluble aggregate with no enzymatic activity. Which of the following
asked by Amanda 
math
an online printing studio charges $.25 per photo and an additional $3.50 for shipping per photo. At how many photos (round to nearest whole number) is the cost exactly the same no matter which method is used? How does this problem apply to the concept of
asked by nikki greer 
poetry
I have to choose a poem to analyze and it has to be classroom appropriate. I was wondering is the poem "The Sick Rose" by William Blake appropriate for a grade 12 classroom? Thanks (posted the poem below) O Rose thou art sick. The invisible worm, That
asked by Shannon 
algebra
Multiply 8(6x^24x+1)
asked by Skeeter 
algebra
subtract (5a^3+a7)(87a^32a^2)
asked by Anonymous 
Geography (Ms. Sue)
What are the harmful effects of nuclear testing? A: Nuclear testing causes widespread health problems. Such conditions include dangerous levels of radiation exposure which causes dramatic increases in the rates of leukemia, thyroid cancer, birth defects,
asked by Anonymous 
accouing
When sales are constant, but the production level fluctuates, net operating income determined by the variable costing method will:
asked by Anonymous 
Math
16. Alison uses a total of 94.5 cups of dog food each week to feed her three dogs. Each dog eats the same amount. How much does each dog eat in one day? 19.  x  2  = 2 Choose from 4, 3, 2, 1, 0, 1, 2, 3, 4. Find all of the numbers that are solutions
asked by Kendall 
Math  Trig
The equation y = 20sin(0.5θ  2) + 40 models the monthly temp for a certain city. Use the equation to predict the temperature in the city during December. Thanks
asked by Lilly 
chemistry
Estimate the initial [C6H5CO2H] in an aqueous solution in which the [C6H5CO2] is 0.000172 M at equilibrium (make an approximate calculation assuming that initial concentration is equal to the equilibrium concentration). C6H5CO2H = C6H5CO2 + H+
asked by HELP ASAP PLEASE 
algebra
Evaluate the polynomial for x=3 and x=3 the value of 6x+8=  when x is 3 the value of 6x+8=  when x is 3
asked by Anonymous 
Physics
A bullet of mass 10.6 grams is fired with a speed of 125 meters per second toward a wood block of mass 187 grams initially at rest on a very smooth (assume frictionless) surface. What is the change in momentum of the bullet if it becomes embedded in the
asked by Matt 
math
Perform the given set operation. Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. (Enter your answers as a commaseparated list. Enter EMPTY for the empty set.) {x  x is a multiple of 2} ∪ {x is a multiple of 7}
asked by lisa 
Physics
I need to explain and demonstrate mathematically why it is easier to pull a wheelbarrow than it is to push it. Also, what effect does the component of force parallel to a bicycle crank have?
asked by Natalie 
Math Reasonableness
Luciel has 365 cookies to sell. She wants to store them in plastic bags that hole 12 cookies each. she estimates she will need 30 bags.Is he right? Why or why not?
asked by Chris 
Math
Aaron has two types do iodine in his lab. He has brand 213 iodine, which costs 36 cents per ounce. He also has brand 856 iodine, which costs 1.58$ per ounce. How many ounces of brand 213 should be used if he has 63 ounces of brand 856 and wants to make a
asked by Elizabeth 
Math Explanation
Carl needs to estimate the quotient 547/92=. Explain how Carl could use compatible numbers to make a reasonable estimate.
asked by Jake 
Algebra 2
In triangle FGH, the measure of angle G is three times that of angle F. The measure of angle H is 20 degrees more that that of angle F. Find the angle measures
asked by Jon 
English
What is the best way to correct the misplaced modifier in the sentence below? In the bag, the dog poked around looking for the last morsel of food. a. The dog poked around looking for the last morsel of food in the bag. b. Looking for the last morsel of
asked by Anonymous 
English
The determined threesome hiked higher and higher up the mountains, battling frostbite, dehydration, frigid temperatures, and fierce winds. They traveled over the icy ground in silence, sometimes 14 hours a day, and were often too tired to even stop and
asked by Anonymous 
life sciences
explain how a species may display 'herd' or 'flock' behaviour as a survival strategy?
asked by dineo 
physics
There is a 2kg block resting on a table with a 5kg block attached to the right hanging off the edge of the table and a 4 kg block attached to the left also hanging off the table find the acceleration of the 5 kg block if coefficient of static equals the
asked by joe 
statistics
2. A researcher has developed a new questionnaire for measuring dominance and would like to estimate the population parameters for the test scores. The questionnaire is administered to a sample of n = 25 subjects. This sample has an average score of mean =
asked by shanice 
college statistics
7. Mary goes into the supermarket. The probability that she buys (a) regular coffee is .30, (b) decaffeinated coffee is .40, and (c) that she buys both is .30. What is the probability that she buys regular coffee, decaffeinated coffee, or both?
asked by shanice 
biology help plz?????????????????
Please tell me which one is TRUE or FALSE for the statements below: 1. During the cardiac cycle the pressure in the left ventricle and right ventricle are approximately equal. 2. During isovolumetric contraction the left ventricular pressure continues to
asked by sam 
English
Which of the following words is an antonym for scorned? a. disliked b. ignore c. acknowledge d. approve of C Which sentence includes an adverbial phrase? a. The weight of an American Mastiff can be up to 160 pounds. b. Xun lives in the mountainous region
asked by Anonymous 
Calculus
Determine if Rolle's Theorem can be applied. If it can, find all values of c such that f'(c)=0. f(x)=x^39x, [3,3]
asked by Lindsay 
languge art
This is a most unusual paragraph. How quickly can you find out what is so unusual about it? It looks so ordinary, you'd think nothing was wrong with it. Actually, nothing IS wrong with it. But it is not as ordinary as you might think. If you think about it
asked by Mi 
algebra
add (8m^33m^2+m5)+(8m^3+3m^24m2)
asked by Skeeter 
algebra
(1/2y^2)(3/5y^8)
asked by Anonymous 
math
what are some arrays that add up to 24 are at least 2 high but no taller than 8 high?
asked by Anonymous 
Math
This year, the sum of Mr. Bellini's age and his son's age is 38 years. 4 years ago, Mr. Bellini was 5 times as old as his son. How old is his son this year? How old is Mr. Bellini this year?
asked by rain 
Physics
how to find the max height of a cat that is thrown at 9.8 m/s and is in the air for a total of 4 seconds.
asked by Austin 
History
Ok, I'm supposed to write an outline of a bibliography on Sarah Bache, is their anyone who might have links that could help maybe?
asked by Gabby 
math
perform this operation: Let U = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}. ________ {2,7,10}
asked by Anonymous 
Math
When a number is written in expended from the exponents, each place is represent by a power of ____________.
asked by Anonymous 
Math
A ___________ is a number with one or more digits to the right of the decimal point.
asked by Anonymous 
Finance
a source of taxincome is
asked by altonia 
algebra
collect like terms 8x^2+6x^42x^2x^46x^2
asked by Anonymous 
Chemistry
Identify the major macronutrient by weight in each of the following key ingredients. Olive oil Carbohydrates Fats Proteins Buttermilk/milk Carbohydrates Fats Proteins Neither Distilled vinegar Carbohydrates Fats Proteins Plain Greek yogurt Carbohydrates
asked by qwerty 
pure maths, life science, physical science, geogra
what can you study with those subjects
asked by kyle 
science
How did the water from the stream source change the land
asked by ezekiel 
Physics
A small bead of mass m is constrained to move along a frictionless track as shown. The track consists of a semicircular portion of radius R followed by a straight part. At the end of the straight portion there is a horizontal spring of spring constant k
asked by asha 
Physics
a rubber ball is thrown downwards off a balcony. after it travels 55m it has a speed of 46.5m/s. what is the initial velocity
asked by Miranda 
Calculus
How can you tell where on a graph f is discontinuous? What are the criteria?
asked by Jonah 
math
Let U = {7, 8, 9, 10, 11, 12, 13}, A = {7, 8, 9, 10}, B = {7, 8, 11, 12}, and C = {9, 11, 13}. List all the members of the given set.  A ∪ (B ∩ C)
asked by lisa 
math
Even counting numbers less than 18
asked by lisa 
Math
It usually takes Amalie 1 3/4 hours to get to her aunt's house. Due to Thanksgiving traffic, this year it took 3 1/3 hours. How much longer did it take this year?
asked by Diamond 
maths
When a die is thrown,what is the probability that the number is greater than 1,given that it is odd?
asked by john 
calculus
Find the definate integal (upper limit 1, lower limit 0) (2x^24x6)dx
asked by brown 
calculus
Find the definate integal (upper limit 1, lower limit 0) (74x)^2dx
asked by Roy 
Leads for Journalism
I'm having difficulties writing a lead for my speech. My speech story will be on the Portage City Council and mayor candidates regarding the city's challenges over the next two years. All their answers were different. My lead was going to simply be:
asked by Blaze 
Math
3/41/2 I get 1/4 but my dad is saying 1 1/4. Can you please help with the answer and explain how you came up with it? Thank you
asked by Cherie 
English
The significance of the birds red feathers which is the prominent color of doodle's blood when he was found under the red nightshade bush. Help me reword this sentence it doesnt make sense...
asked by vickie 
English
Argue a case for either the usage of hyperbole or understatement. Which do you think is more effective? More humorous? Explain your opinions, citing examples from the texts. Explain what this means and give an example...
asked by vickie 
Math Question
What does "c ≠ 0" mean? I've heard the "≠" sign means "does not equal." Does this mean that c ≠ 0 means that "(variable) does not equal zero"? What is it's usage?
asked by Suzannah 
leads again MsSue
Ms Sue.. this is just a synopsis of what the candidates said Ansari said the biggest challenge is balancing the costs of services with revenue shortfalls, Farrell said finding ways to do more with less and saving on costs, Ford said reduction of revenue
asked by Blaze 
statistics
6. Out of eight numbers, what is the probability of drawing a two on the first draw and a three on the second draw using sampling with replacement?
asked by shanice 
math
I need help on study links 2.9 for 5 grade
asked by tony 
Math
In the number 3,207,409 the 4 has a value of 400. The value of a digit in a number is called its___________ value.
asked by Anonymous 
Algebra
(y^3y^25y5)/(y+1) can someone help me solve this?
asked by Christopher 
Math
What is the equation for an input of 0,1,2,3,4 and output of 1,4,9,16,25
asked by April 
Calculus 1
Related Rates I am having trouble finding the equation to use to fit this all together. At noon, ship A is 100km west of ship B. Ship A is sailing south at 35 km/s and ship B is sailing north at 25 km/s. How fast is the distance between the ships changing
asked by Juan 
Physics
A projectile is fired off a 35m cliff at 18m/s. what horizontal distance does the projectile travel before hitting the ground?
asked by Miranda 
Physics
I need to explain and demonstrate mathematically why it is easier to pull a wheelbarrow than it is to push it. Also, what effect does the component of force parallel to a bicycle crank have?
asked by Natalie 
biology help?
Please tell me which one is TRUE or FALSE for the statements below: 1. During the cardiac cycle the pressure in the left ventricle and right ventricle are approximately equal. 2. During isovolumetric contraction the left ventricular pressure continues to
asked by sam 
physics
a ball is tossed from a height y 0 above the ground with an initial velocity of 10.00 m/s and angle of 25.0° below the horizontal. It strikes the ground 3.60 s later.
asked by emanuel 
physics PLEASE HELP ME
a rubber ball is thrown downwards off a balcony. after it travels 55m it has a speed of 46.5m/s. what is the initial velocity
asked by mariam 
english
is ap physics very challenging and difficult because i need to know if im going to be able to go through t next term
asked by kevin