Questions Asked on
June 8, 2012

Math
a light shines from the top of a pole 50ft high. a ball is dropped from the same height from a point 30 ft away from the light. how fast is the ball's shadow moving along the ground 1/2 sec later? (assume the ball falls at a distance of s=16t^2 in t sec)
asked by Teri 
Physics(Please check)
A uniform plank of length 5.0 m and weight 225 N rests horizontally on two supports, with 1.1 m of the plank hanging over the right support (see the drawing). To what distance x can a person who weighs 404 N walk on the overhanging part of the plank before
asked by Hannah 
chemistry
In one process of 5.75 kg of CaF2 are treated with an excess of H2SO4 and yield 2.85 kg of Hf calculate the percent yield of hf?
asked by April 
Math
a man 6ft tall walks at the rate of 5ft/sec toward a streetlight that is 16ft above the ground. At what rate is the length of his shadow changing when he is 10ft from the base of the light?
asked by Teri 
Physics Please Help ASAP
Identify the unknown particles X and X' in the following nuclear reactions. (In parts (a) and (b), enter only the missing product or reactant.) A) X + 4over2 HE > 24over12 Mg+1over0 n B) 235over92U+1over0 n > 90over38Sr+X+2and 1over0 n
asked by Ashley 
math
A superball is dropped from a height of 2 m and bounces 90% of its original height on each bounce. (a) When it hits the ground for the eighth time, how far has it traveled? (b) How high off the floor is the ball on the eighth bounce?
asked by Angie 
Chemistry
Consider the following unbalanced equation. H1+(aq) + Fe(s) H2(g) + Fe2+(aq) What is the balanced oxidation halfreaction? What is the balanced reduction halfreaction? What is the balanced overall cell reaction?
asked by Mel 
physics need help plz
An arrangement of two pulleys, as shown in the figure, is used to lift a 49.6kg mass a distance of 3.70 m above the starting point. Assume the pulleys and rope are ideal and that all rope sections are essentially vertical. (a) What is the mechanical
asked by Akbar 
Economics
1. Why is a high level of subsistence agriculture a characteristic of less developed countries? B. It shows that the country uses less energy. C. It means that more people are unemployed or underemployed. D. It means that there are fewer workers available
asked by Anonymous 
Chemistry
Distinguish between an absorption spectrum and an emission spectrum.with which did bohr work?
asked by Yeneta 
math
The legs of a right triangle are 3 and 4 units long. Find the lengths, to the nearest tenth, of the segments into which the bisector of the right angle divides the hypotenuse. (Hint: Draw a picture of the triangle, label one segment of the hypotenuse "x,"
asked by molly 
Physical Geography SOMEONE PLEASE HELP!
Assume that a parcel of air is forced to rise up and over a 6000foothigh mountain. The initial temperature of the parcel at sea level is 76.5°F, and the lifting condensation level (LCL) of the parcel is 3000 feet. The DAR is 5.5°F/1000’ and the SAR
asked by Sandra 
Chemistry
An electron in the n=5 level of an H atom emit a photon of wavelength 1281nm. To what energy level does the electron move? Thanks for ur help.
asked by Yeneta 
U.S. GOVERNMENT
1)A government where the executive of the nation comes directly from the legislature is known as a parliamentary government, meaning the legislature decides who the nation's top executive is (although there is often a separate ceremonial head of state).
asked by Booker Perry 
Calculus
From each corner of a square piece of cardboard, remove a square of sides 3 inch. Turn up the edges to form an open box. If the box is to hold 300 inch cubed, what are the dimensions of the original piece of cardboard?
asked by HELP ME PLEASE! 
Art
What is the mood of the sculpture, Discobolus? Hes an athlete, and I don't know how to describe it.. I want to say, concentrated, but I don't think that's a mood.
asked by Anonymous 
physics
How many grams of carbohydrate does a person of mass 75 kg need to metabolize to climb five flights of stairs (15 m height increase)? Each gram of carbohydrate provides 17.6 kJ of energy. Assume 10.0% efficiency—that is, 10.0% of the available chemical
asked by Nasir 
Personal Finance
What would be the APR on $1200.00 if the total interest paid was 75.00 for 36 months. The bank charge a service charge of 12.00 for the loan.
asked by Sheri Zinnel 
medu
RM 2000 was invested on 15march 2012. If the simple interest rate offered was 10% per annum, find the interest received on 29 August 2012 using A. Exact time and exact simple interest B. Exact time and ordinary simple interest C. Approximate time and exact
asked by mariam 
physics
A 90Kg box is pushed by a horizontal force F at constant speed up a ramp incined at 28 degrees. Determine the magnitude of applied force when the ramp is frictionless and when the coefficient of kinetic friction is 0.18
asked by Rose 
English
There are two ways of learning in terms of the mathod; one is a serious formal way, and the other is an entertaining enjoyable way. Both ways have merits and demerits. To a lowlevel students, an entertaining enjoyable way seems to be much better than a
asked by rfvv 
Chem
The value of ƒ¢H‹ for the reaction below is 482 kJ. Calculate the heat (kJ) released to the surroundings when 12.0 g of CO(g) reacts completely. 2CO(g) + O2(g) ¨ 2CO2(g) *I just want to how to solve this problem as in an equation, not the answer.
asked by Harlem 
U.S. GOVERNMENT
1)The Greeks openly accepted all groups of people into their "total democracy. 2)The Greeks were the first to refer to one of their democratic bodies as a "Senate. 3) From the Middle Ages, people further developed the democratic ideal of equality along
asked by Booker Perry 
chemistry
When you add 100ml of a 0.1M HCl solution to 200 ml of 0.4M NaOH solution what is the pH? can you please show detailed work. o don't understand this
asked by jen 
Geography
By the early 2000s which country was Taiwan's third largest trading partner?(China),(South Korea). ( U.S.),(Japan)
asked by Blake 
Physics
(a) If the length of the Achilles tendon increases 0.55 cm when the force exerted on it by the muscle increases from 2200 N to 6000 N, what is the "spring constant" of the tendon? N/m (b) How much work is done by the muscle in stretching the tendon 0.55 cm
asked by Adam 
Art
I need to interpret the meaning, mood, or idea communicated from the painting, The Second Chinese Horse by Lascaux. Help please.
asked by Anonymous 
geometry
My Flower Basket delivers flowers within a 25 mile radius of their store. If this area is represented graphically, with My Flower Basket located at (4, 3), what is the equation that represents the delivery area?
asked by Anonymous 
Pharmacology
You provide the manufacturer’s recommended dose of an antibiotic, which is 10mg/kg IV for a 100kg patient. You then draw a level 30 minutes after the dose. Assume rapid distribution and neglible clearance/metabolism over the 30minute period between the
asked by Amy 
math
A 4'' diameter round pizza with area As and a 12'' diameter round pizza with area Ab. What is the ratio Ab/As? How many times bigger is the larger pizza?
asked by Joseph 
Math
Reading readiness of preschoolers from an impoverished neighborhood (=20) was measured using a standardized test. Nationally, the mean on thios test for preschoolers is 30.9, with SD = 2.08. a. children below the 30th percentile (in the bottom 30%) are in
asked by Norvin 
understanding hospital billing
I need 2 CPT codes for this question. I think I have one of them figured out. 16020. I am new at this, and any help would be appreciated. Patient presents to the Emergency Department with a severe burn on the left upper arm. Level I E/M reveals a
asked by Terry Davis 
English
1. Who is Aibo? 2. He is a robot dog. 3. It is a robot dog. 4. What is Aibo? 5. He is a robot dog. 6. It is a robot dog. (Are the questions and answers all correct? If the robot has a female voice, can we say " She is a robot dog?")
asked by rfvv 
Intermediate Algebra
A gardner wants to create a triangular garden in the shape of a right triangle with shaortest side length x8y ft and the middle length side x+6y ft. What is an algebraic expression for the area of the garden? Be sure to multiply this out and express in
asked by ladybug 
maths
1) if x+1/x=2,then x^2012+1/x^2012=? 2)if A>B>C>D,find the digits A,B,C,D (which are from1 to 9), so that ABCDDCBA=BDAC. 3)solve:pxqy=r and rxpy=q.
asked by sagar 
Chemistry
A 0.05 N solution of a salt occupying a volume between two platinum electrodes seprated by a distance of 1.72 cm an having an area of 4.5 cm2 has a resistance of 250 ohm. calculate equivalent conductance of a solution
asked by Robin Singh Hayer 
Physics(Please respond)
Some bacteria are propelled by motors that spin hairlike flagella. A typical bacterial motor turning at a constant angular velocity has a radius of 1.9x108m, and a tangential speed at the rim of 2.7x105 m/s. (a) What is the angular speed (the magnitude
asked by Hannah 
PHYSICS
A CAR ACCELERATES TO 36M/S FOR 4 SECS BEFORE DECELERATING TO 32M/S FOR THE NEXT 6 SECS. CALCULATE THE DISTANCE PLEASE PLEASE HELP
asked by fahd 
stats
USA snapshot presented a bar graph depicting business travelers’ impression of wait times in airport security lines over the past 12 months. Statistics were derived from Travel Industry Association of American Business Traveler Survey of 2034
asked by baby 
write
my question is what obstacles do i have to overcome to succeed?
asked by mai 
Physics :)
John and Joan walk in opposite directions around a circular path, starting from the same point. The path has a radius of 50.0 meters. John walks at 1.00 m/s, Joan at 1.25 m/s. How long will it take for them to meet? Can someone please explain this to me?!
asked by Christina 
Intermediate Algebra
A school designer wants to create a whiteboard with the optional dimensions to enhance learning. It is determinedd that if one side of the whiteboard is x+2y inches theother side should be x^2+6xy5y^2 inches. Write an algebraic expression for the area of
asked by ladybug 
Calculus
Spud McTator climbs his sailboat's mast while anchored. He fires his potato gun. The height of the potato above the ocean is given by: h=0.002X*2+2X=22. Where X is the horizontal distance from the keel of the boat. How far from the keel is the height of
asked by help :) 
physics
x=x0+v0t+1/2at^2. Assuming that x0=0, a=2, and x=h, solve for t in terms of initial v and h? x0 mean initial value of x same with v0
asked by Joseph 
algebra
radicals multiply and simplify by factoring ____ ______ ^3y^7* ^316y^8 unsure how to do root square sign.
asked by Randy 
maths
a number which is less than or equal to 150 but if counted in pairs, one will remain if counted in threes, two will remain if counted in fours, three will remain if counted in fives, four will remain if counted in sixes, five will remain if counted in
asked by kala 
resumes
do you guys know of any good FREE resume building sites?
asked by Blaze 
Business Law
As company ombudsman, your task is to investigate complaints of wrongdoing on the part of corporate directors and officers, decide whether there is a violation of the law, and deal with the wrongdoers accordingly. Jane, a shareholder of Goodly Corporation,
asked by Marcal 
Exercise
What exercises could you still do at 50 years old? Are you working out now? What are you able to do? What about at 70 years old? How are you going to handle injuries? What are preventative measures that you could take? Remember: You must post your own
asked by Andy 
Education
A classroom test that measures appropriate knowledge and/or skills is likely to be reliable because of the strong link between validity and reliability. A. Advanced vocabulary B. Doubleconcept item
asked by zz 
child care
in aquiring equipment for a child care facility, you'll most likely
asked by shajuan 
math
need help with 20 question for algebra and trigonometry
asked by Anonymous 
physics
Why can a Frisbee (or an aerobie) be thrown so much further than a ball? Comment on the applicability of above for throwing a Frisbee or an aerobie on the Moon
asked by xue 
algebra
Suppose the modified quota is 3.27 Fill in the blanks, and round your answers to two decimal places. (a) Find the lower quota. (b) Find the upper quota. (c) Find the arithmetic mean of the lower and upper quotas. (d) Find the geometric mean of the lower
asked by pam 
Intermediate Algebra
The area of a rectangular swimming pool is given by 4x^2+19x+12 ft one side length f the pool is given by 4x+3 feet. What is an algebraic expression for the other side of lenght of pool? Simpily this, and include correct units as part of your answer.
asked by ladybug 
Pharmacology
dose is 10mg/kg IV for a 100kg patient. level drawn at level 30 minutes after the dose. The serum level of this antibiotic returns at 83.3mg/L. What is the volume of distribution of the drug? The goal therapeutic serum level of a is 120 mg/L. How much more
asked by Amy 
Management
Critical thinking is very important in making decisions that impact an organization’s growth and survival. Which of the following traits of a critical thinker is essential in this process?
asked by Samantha 
Art
Ms. Sue, I urgently need you to check this email. Thank you 1) I suppose you received the remaining balance because my bank has already taken the money from my bank account. 2) However, I would be grateful to if you let me know about that all the same. 3)
asked by Mike 
c0llege math
perform the indicated operations give answer in scientific notation (5x10 to second power) x (5.6 x 10 to the fourth power)
asked by Lourane 
c0llege math
solve 2.3=_4 2
asked by Lourane 
c0llege math
solve 2x=11(x1) would the correct answer be x=___9 11
asked by Lourane 
precal
4=2cos(pi/6t2pi/3)+4 How do i solve this step by step ith justification for each step? super frustratd thankyou
asked by wendell 
Chemistry
In what ways are microwave and ultraviolet radiation the same? In what ways are they different?
asked by Yeneta 
Education
Having undertaken a variety of proactive steps to forestall the inclusion of items that might, due to an item's content, have an unwarrantedly adverse impact on students because of any student's personal characteristics, the testdevelopers then, based on
asked by bj 
Math or geometry
7c4x+45
asked by Diana 
English
what do impulsive mean?
asked by Mohammad 
algebra
I answered some of the questions but i need help with number 7, 8, and 10. Here is an example of the assignment. I am the current secretary of a horse rescue, in charge of fund raising as well as organization and meeting minutes. We have decided to
asked by sharon 
Chemistry
What is the difference between a heating curve and a saturation curve? Can I get an example of a saturation curve too please
asked by Anonymous 
science
which if the following stars is brightest Nova, white dwarf, red giant, or main sequence
asked by tia 
physics
Consider the equation mv0 +3mv0 = 4mvf. Where m and v0 are constants, Solve for vf. Simplify answer.
asked by Joseph 
maths
a boy was employed on the understanding that he was to receive 'p' paise for everyday he worked and 'q' paise for everyday when there was no work for him. after 'd' days his earnings amounted to Rs.'x'.how many days had he worked?
asked by sagar 
medical
purpose of an organization chart and what it accomplishes for healthcare organization?
asked by Juanita 
Maths
What is the square root of: a)6889 b)1681
asked by joshua 
c0llege math
solve x2.1=7.5 would the correct answer be 5.4
asked by Lourane 
physics
distance = velocity x time 36m/s x4 =144/2 = 72 d=vt 32 x 6 = 192 distance  72M + 192M = 264M
asked by fahd 
question
whats that thing called that horses have on their face? it looks like a rope or string of some sort
asked by Anonymous 
Basic Biomechanics
A car teeters on the edge of a cliff. A eagle weighing 55 N lands on the hood 1.1 M from the edge of the cliff which functions as an axis. At the same time, an owl weighting 44 N lands on the trunk 1.5 m from the axis. What are the torques exerted by the
asked by Joshua Mclaurin 
geometry
A community 5K run will award $ 50 to the winner. 40 people enter the race,and they each pay an entry fee of $20. Assuming thay are all equally likely to win, what is a fair price for the competition? Round to the nearest cent.
asked by angela 
maths and statistics
A company manufactures a product. The total fixed costs are $75 and the variab cost per unity is $5. 1)find an expression for the total cost in terms of Q,the quantity produced
asked by kim 
question
Is hellenistic a prehistoric culture?
asked by Anonymous 
art
who is the artist of the sculptures the dying gaul, and the seated boxer?
asked by Anonymous 
child care
do anyone have the answers to exam 00305200
asked by shajuan