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Questions Asked on June 18, 2012

A 140 g baseball is dropped from a tree 15.5 m above the ground. With what speed would it hit the ground if air resistance could
1. 2 answers
2. asked by Kensey
3. 14,720 views
A 80 kg skier grips a moving rope that is powered by an engine and is pulled at constant speed to the top of a 25 degree hill.
1. 1 answer
2. asked by Kensey
3. 6,073 views
List three advantages and three disadvantages of improvised apparatus in teaching chemistry?
1. 2 answers
2. asked by Yeneta
3. 4,829 views
A 0.40kg ball, attached to the end of a horizontal cord, is rotated in a circle of radius 2.1m on a frictionless horizontal
1. 2 answers
2. asked by Anonymous
3. 4,514 views
The distance between successive crests in a series of water waves is 5.0m; the crests travel 8.6m in 5.0s . Calculate the
1. 2 answers
2. asked by Melissa
3. 3,391 views
prove that 2sinxcosx-cosx/1 -sinx+sin^2x-cos^2x=cotx
1. 1 answer
2. asked by krishan
3. 2,661 views
A crate is given an initial speed of 3.1 m/s up the 29 degree plane shown in the figure . Assume coefficient of friction = 0.17.
1. 1 answer
2. asked by Anonymous
3. 2,521 views
how many grams of c2h6o contain the same number of oxygen atoms as 0.75 mol of h2o?
1. 1 answer
2. asked by Amanda
3. 2,489 views
assume that the heights of men are normally distributed with a mean of 68.4 inches and a standard deviation of 2.8 inches.if 64
1. 1 answer
2. asked by veedu
3. 2,408 views
Prove that (2√3+3)sinx+2√3cosx lies between -(2√3+15) and (2√3+15)
1. 1 answer
2. asked by krishan
3. 2,351 views
All of the following are recommended by your text as time-management strategies, EXCEPTa. setting priorities. b. breaking down
1. 1 answer
2. asked by Andy
3. 2,338 views
The distribution coefficient between ether & water for aspirin at room temperature is 3.5. What weight of aspirin would be
1. 2 answers
2. asked by nimfa
3. 2,317 views
suppose 250 mL of a .433 M solution of CuCl2 is electrolyzed. how long will a current of 75A have to run in order to reduce the
1. 9 answers
2. asked by Jane
3. 2,081 views
Which is a common expectation that can hurt a relationship?a. expecting your partner to change b. expecting that your partner
1. 1 answer
2. asked by Andy
3. 2,058 views
How much heat is liberated when 0.113 mole of sodiumreacts with excess water according to the following equation? DH = -368
1. 2 answers
2. asked by naik
3. 2,031 views
A car has a 12 volt battery. The engine has a resistance of 0.22 ohms. How many amps will be drawn from the battery when the key
1. 5 answers
2. asked by Leo
3. 1,979 views
prove that cosx(tanx+2)(2tanx+1)=2secx+5sinx
1. 2 answers
2. asked by krishan
3. 1,955 views
I have: the half life of U-238 is 4.5 x 10^9 yr. A sample of rock of mass 1.6g produces 29 disintegrations per second. find
1. 1 answer
2. asked by Nancy
3. 1,919 views
What potential difference is required in an electron microscope to give electrons a wavelength of 0.05 nm ?
1. 1 answer
2. asked by David E
3. 1,904 views
A researcher determines that 42.7% of all downtown office buildings have ventilation probles. Is this census data or sample
1. 1 answer
2. asked by Dianne
3. 1,883 views
You must cover a hole that is elliptical in shape. You measure the major and minor axes and find them to be 6 ft. and 4.5 ft.
1. 2 answers
2. asked by Leo
3. 1,865 views
if the probability of a newborn child being female is 0.5, find the probability that in 100 births, 55 or more will be
1. 2 answers
2. asked by veedu
3. 1,862 views
The transformation of love progresses in the following way:a. high levels of passion, increasing intimacy, diminished romance,
1. 1 answer
2. asked by Andy
3. 1,862 views
if cot (a+b)=0 then write the value of sin(a+2b)
1. 1 answer
2. asked by krishan
3. 1,834 views
Roger is a single father of two young daughters and has been dating Cheryl for the past two years. He recently learned that his
1. 2 answers
2. asked by Andy
3. 1,807 views
will fe3+ oxidize Sn2+ to Sn4+ in acidic solution?
1. 1 answer
2. asked by Erin
3. 1,763 views
what percent of 67 is 33? round to the nearest tenth of a percent.the answer is 49.3% but i don't know how he got that can you
1. 3 answers
2. asked by Taylor
3. 1,756 views
a current is passed through 500 mL of a solution of CaI2. the following electrode reactions occur:anode: 2I- ---> I2 + 2e-
1. 2 answers
2. asked by Leah
3. 1,749 views
joe has $450 dollars to spend on the office party he spends half of the money on food and1/3 on the decorations which fraction
1. 1 answer
2. asked by Anonymous
3. 1,651 views
A bouncing ball returns to the same height each time. Is this an example of simple harmonic motion? Explain your answer.
1. 2 answers
2. asked by Jamie
3. 1,429 views
Homeostasisa. is a state of unmanaged stress. b. describes the body during the fight-or-flight reaction. c. is a state of normal
1. 1 answer
2. asked by Andy
3. 1,416 views
Will someone please check my answers?1)Ping is deciding what to choose for dinner from a menu. He can choose 1 of 4 pasta meals,
1. 3 answers
2. asked by Anonymous
3. 1,368 views
A 23-kg boy stands 3 m from the center of a frictionless playground merry-go-round, which has a moment of inertia of 180 kg m2.
1. 2 answers
2. asked by Maria
3. 1,346 views
how to write 9.035 in expanded notation
1. 2 answers
2. asked by don
3. 1,328 views
A 3.30-kN piano is lifted by three workers at a constant speed to an apartment 28.8 m above the street using a pulley system
1. 1 answer
2. asked by Kristin
3. 1,273 views
If 3 is raised to the 59th power, i.e. 359, what is the units digit? The units digit is the digit in the ones place. Explain the
1. 1 answer
2. asked by bethel
3. 1,266 views
Hydrochloric acid reacts with calcium to form hydrogen and calcium chloride. If 100 grams of hydrochloric acid reacts with 100
1. 1 answer
2. asked by tyler
3. 1,215 views
A 1.50 liter gas sample at 745mm HG and 25 celsius contains 3.55% radon by volume radon-220 is an alpha emitter with a half life
1. 2 answers
2. asked by Nancy
3. 1,194 views
Two Earth satellites, A and B, each of mass m = 960 kg, are launched into circular orbits around the Earth's center. Satellite A
1. 1 answer
2. asked by Kensey
3. 1,188 views
Joanne Flynn bought a new boat for $16,200. She put a $2,800 down payment on it. The bank’s loan was for 50 months. Finance
1. 0 answers
2. asked by Riquetta Elliott
3. 1,183 views
Would you invest in the company you reviewed based on the information contained in the annual report? Why or why not? Please
1. 2 answers
2. asked by patricia
3. 1,172 views
A 66 kg skier starts from rest at the top of a 1200 m long trail which drops a total of 180 m from top to bottom. At the bottom,
1. 3 answers
2. asked by Kensey
3. 1,160 views
if tanX=a/b, then show that asinX-bcosX/asinX+bcosx = a^2-b^2/a^2+b^2
1. 0 answers
2. asked by krishan
3. 1,140 views
This is confusing:This proportion can be changed to (0.45)y = x, where x represents the person's weight in kilograms and y
1. 2 answers
2. asked by Leo
3. 1,135 views
From a point on a straight road, Nico and Maria are riding bicycles in the same direction. Nico rides at 12mph and Maria rides
1. 4 answers
2. asked by Jen
3. 1,089 views
If I add 0.348 liters of 5.25% bleach(Sodium Hypochlorite) into 4 liters of water, what is my concentration in ppm ?
1. 3 answers
2. asked by Brian
3. 1,070 views
A function has the rule "multiply by three, and then subtract two." What is the output when the input is 8?
1. 2 answers
2. asked by leya
3. 1,026 views
An Object of mass 0.5kg is whirled at the end of string 0.8m long. If the strings makes three revolutions in 1.2sec, find the
1. 3 answers
2. asked by Kunal
3. 1,021 views
it is sad that she could not arrive. could you pl explain the position and parts of speech of 'IT' in the given sentence
1. 1 answer
2. asked by R S Telagathoty
3. 1,013 views
An artifact was found and tested for its carbon-14 content. If 70% of the original carbon-14 was still present, what is its
1. 1 answer
2. asked by Randy
3. 1,000 views
1. He is doing a sit-up.2. He is doing sit-ups. 3. He can do up 100 sit-ups. (Are they all grammatical?) 4. Am I favorite? 5. Am
1. 1 answer
2. asked by rfvv
3. 998 views
1. In my bag, I have two fishes.1-1. In my bag, I have two fish. 2. In my bag, I have two food. 3. In my bag, I have food. 4. In
1. 1 answer
2. asked by rfvv
3. 996 views
supposed a president vetoed a bill passed by congress according to the information which of the following actions by congress
1. 1 answer
2. asked by Anonymous
3. 984 views
The fight-or-flight response prepares the body for physical action regardless of whether action is needed.is it True
1. 1 answer
2. asked by Andy
3. 978 views
approximate .68 inch to the nearest eight of an inch
1. 2 answers
2. asked by booker
3. 972 views
Darla is buildig a new desk. To make sure she made a square corner, she measures 3ft. from the corner along one edge and 4ft.
1. 1 answer
2. asked by Randy
3. 972 views
hello can you help???swim 21 --- how will it be measured to see if it is -- was it -- will it be a success. thanks
1. 2 answers
2. asked by elizabeth
3. 966 views
Thank you very much, Writeacher. I need to rephrase sentence 1. I also wonder if you could help me find online tests on verbs
1. 1 answer
2. asked by Mike
3. 950 views
could you pl tell me the symptoms and diagnosis of bone cancer
1. 1 answer
2. asked by R S Telagathoty
3. 947 views
would you pl explain conditional sentences and simple compound and complex sentences and their importance in eng language
1. 1 answer
2. asked by R S Telagathoty
3. 934 views
A 0.50-kg block rests on a horizontal, frictionless surface, it is pressed against a light spring having a spring constant of k
1. 1 answer
2. asked by user
3. 923 views
Would someone please check my answer for me?1)The equation x2 + (y + 4)2 = 49 models the boundary on a local map for which
1. 1 answer
2. asked by Anonymous
3. 923 views
a sample of vapor weighing 0.745 g filled a 250 ml flask when placed in a water bath at 98 degrees celsius. the barometric
1. 1 answer
2. asked by Anonymous
3. 907 views
Nitrogen gas and sodium liquid are produced by the decomposition of sodium azide NaN3 (s). what volume of nitrogen gas, measured
1. 1 answer
2. asked by Anonymous
3. 905 views
If M = 45 and SD = 5, what percentage of scores falls between 39 and 51.2?I need to work the problem in excel.
1. 0 answers
2. asked by Mymeemia
3. 899 views
Four boys sit down to play a game of marbles. They empty the bag of marbles and divide the marbles among themselves, and they
1. 1 answer
2. asked by Anonymous
3. 895 views
what do you mean by arise biosphere
1. 0 answers
2. asked by Anonymous
3. 849 views
differentiate each functiona) y = cos^3x b) y = sin(x^3) c) y = sin^2 xcos3x
1. 0 answers
2. asked by Henry
3. 841 views
Responses to stressors include physical and emotional behavioral responses.is it True
1. 2 answers
2. asked by Andy
3. 833 views
what is change of [potential energy as result of this move of how much work is done in raising a 35kg crate a distance of 1.5m
1. 1 answer
2. asked by lora
3. 825 views
The position of a particle, s metres from the starting point, after t seconds, is defined by the function s(t) = 2t^3 - 7t^2 + 4
1. 2 answers
2. asked by Lenna
3. 815 views
I need help with this problem: finding the instantaneous rate of change of y with respect to x at the point x=5 if
1. 6 answers
2. asked by Help101
3. 806 views
For Tommy Bench, a minor league pitcher, the times between pitches are normally distributed with a mean of 36 seconds and a
1. 1 answer
2. asked by Mickie
3. 803 views
This problem from China is almost 2000 years old: Find a number that when divided by 3 gives a remainder of 2, when divided by 5
1. 0 answers
2. asked by Anonymous
3. 784 views
MMK Cos. normally pays an annual dividend. The last such dividend paid was $2.3, all future dividends are expect to grow at a
1. 0 answers
2. asked by Anonymous
3. 778 views
a ball was dropped off a cliff and took 3.59s to fall to the water below. neglecting air resistance how fast in m/s was the ball
1. 1 answer
2. asked by lora
3. 773 views
What do I do for diction? My teacher's definition is a word choice intended to convey a certain effect. Help, please!Also What
1. 1 answer
2. asked by IB student
3. 756 views
work-abstract nounmoney-material noun homework-abstract noun food - collective noun fruit - collective noun (Are the kinds of
1. 1 answer
2. asked by rfvv
3. 748 views
11. A local health care company wants to estimate the mean weekly elder day care cost. A sample of 10 facilities shows a mean of
1. 1 answer
2. asked by tristen
3. 747 views
Consider a deck of 52 cards with the following characteristics:13 red cards, numbered 1 through 13 13 blue cards, numbered 1
1. 1 answer
2. asked by wendell
3. 742 views
A proton moving at 500000m/s enters a series of charged parallel plates. What is the impact speed on the last plate.
1. 1 answer
2. asked by Shree
3. 721 views
directors and officers who exploit their positions for personal gain are violating the?a. business judgment rule b.fairness
1. 2 answers
2. asked by just a student
3. 705 views
For the following questions, you are provided with two statements. Choose the two economic goals THAT ARE MOST IN CONFLICT when
1. 3 answers
2. asked by Booker Perry
3. 694 views
WHAT IS THE ACROSTIC FOR THE WORD "ECONOMICS" PLEASE HELP!! hehee
1. 1 answer
2. asked by Sheng
3. 688 views
Differentiate each functiona) y = -3x^2 + 5x - 4 b) f(x) = 6/x - 3/(x^2) c) f(x) = (3x^2 - 4x)(x^3 + 1) the answers i got for
1. 5 answers
2. asked by Henry
3. 673 views
Using Coulomb's Law, calculate the force of repulsion between a positivecharge of 110 Coulombs and another positive charge of
1. 1 answer
2. asked by LL
3. 662 views
The product of two consecutive positive even numbers is 728. What are the numbers? (Enter solutions from smallest to largest.)an
1. 2 answers
2. asked by Urgen please help
3. 658 views
The ----------- definition of gloomy is dismal or depressing.
1. 2 answers
2. asked by william
3. 657 views
The assembly times for a toy car follow a normal distribution with a mean of 55 minutes and a standard deviation of 4 minutes.
1. 2 answers
2. asked by Mickie
3. 650 views
The time it takes to run a road race is normally distributed with a mean of 190 minutes and a standard deviation of 21 minutes.
1. 1 answer
2. asked by Mickie
3. 641 views
A 20000 kg satellite is launched from the surface of saturn and put into orbit.The satellite is launched at the speed of 27.5 x
1. 0 answers
2. asked by Roger
3. 638 views
at the school store 6 pencils sell for $.99. at this rate what is the cost of 16 pencils?
1. 4 answers
2. asked by Taylor
3. 632 views
A force, F = (3x + 4y) N,is applied to an object at a point whose position vector with respect to the pivot point is r = (3x +
1. 1 answer
2. asked by James
3. 625 views
Explean the chinese proverb "I hear and I forget;I see and I remember;I do and I understand",from instructional materials and
1. 2 answers
2. asked by Yeneta
3. 608 views
Adrienne had a pizza party at a local arcade. She spent twenty-four dollars for pizza and five dollars per person for games. Let
1. 3 answers
2. asked by leya
3. 601 views
GUY WIRE. How long is a guy wirereaching from the top of a 15ft. pole to a point on the ground 10 feet from the pole? exact
1. 1 answer
2. asked by LL
3. 600 views
Between 1935 and 1957, a period that included World War II, the birth rate rose from 16.9 to 25 per 1000 people. What was the
1. 2 answers
2. asked by mary
3. 595 views
A bicyclist starts from rest and accelerates at a constant rate for 15.0s. After 10.0s the bicycles front wheel is turning at a
1. 1 answer
2. asked by courtney
3. 595 views
One seemingly normal day in junior year, my friend and I were taking a train together home from school. We were on an extremely
1. 7 answers
2. asked by Anna
3. 585 views
A force sensor is used to measure a force applied to a 9.1 kg box on a hard, horizontal surface. It records that the box starts
1. 2 answers
2. asked by Brittney
3. 581 views

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