physics please HELP !
130,355 results, page 73

physics
9th grade physics sketch a picture of the initial total velocity for the projectile when the angle is at 0 degrees, 30 degrees and 60 degrees. Resolve each into vertical and horizontal components. No velocity given 
calculuscan someone please help me with this ques
Given the following polynomial find, a. zeros and the multiplicity of each b. number of turning points c. end behavior f(x)=(x1)(x5) a. the multiplicity of (x1)(x5) x=1 and x=5is this correct b. number of turning points I had f(x)0 at turning points BUT my teacher ... 
math
Can some one please help me I had developed jello brain today. Can some one explain to me why the line x =  2 is avertical line. and what the slope would be for the line. and why its diffenrence for y = 2 . what would the slope be for y = 2. Please I am sinking here. 
Chemistry Please help!
Using MO theory (but w.o drawing a MO diagram) predict whether HHe or HHe+ would be more stable. I believe HHe+ would be more stable as the bond order would be 1 (i.e. BO=(20)/2) while BO for HHe is 1/2. Please confirm! thanks! 
college physics
if a girl pulls on a 15 kg wagon with a constant horizontal force of 35N.Her friend pushes on the wagon in the same direction with a constant horizontal force of 10 N. and there is a friction force of 15 N. I need to draw a diagram of this problem and calculate the Net Force ... 
PHYSICS
A flatbed truck of mass 2000kg traveling 20 m/s (about 45mph)carries a load of mass 500kg positioned 3 meters behind the cab. The load is kept on the truck by friction, and the coefficient of friction between the load and the bed of the truck is 0.5. What is the shortest ... 
Physics PLEASE HELP
A painter climbs a ladder leaning against a smooth wall. At a certain height, the ladder is on the verge of slipping. Let the mass of the painter be 69.0 kg, length = 2.80 m, the ladder’s mass to be 21.0 kg, θ = 57.0°, and the coefficient of friction between ground and... 
Physics
Physics Homework _____________________________________________________________ 1.) A particle at t 1 = 2.0 s is at x 1 = 3.4 cm and at t 2 = 4.5 s is at x2 = 8.5 cm. What is its average velocity? Can you calculate its average speed from this data? ... 
Physics (please help!!!!)
A box with a volume V = 0.04 m3 lies at the bottom of a lake whose water has a density of 103 kg/m3. (a) How much force is required to lift the box, if the mass of the box is 1050 kg? (b) How much force is required to lift the box, if the mass of the box is 100 kg? (c) How ... 
PLEASE HELP! EARTH SCIENCE
What is the relative humidity of sample 2: Sample: 2 T(degrees)C: 32(degrees) Mass of Water Vapor: 14 g Mass of Water vapor at Saturation: 34 g please help me...i don't understand how to find this 
English
Please help me which one is coreect in grammar and please explain me. 1.She was moving to singapore on June 2012 for job opportunity. 2. She has moved to singapore on june 2012 for job opportunity. 
math double check please
GCF and LCM of 252, 420, and 180 252: 2,2,3,3,7 420: 2,2,3,5,7 180: 2,2,3,3,5 GCF is 12 and I think LCM is 1260? Can you please tell me if I'm right? 
physics urgent!
The magnetic field in the region shown below is increasing by 5 T/s. The circuit shown (with R=25 , C=55 µF, dimensions 1 m by 2 m) is inserted into the region as shown. The capacitor is initially uncharged. 1. What is the current in the circuit at the moment the circuit is ... 
Physics
Question: You have a 4.5 kg lead block at room temperature. Part A: Find the energy required to raise the lead’s temperature to its melting point. Part B: Find the energy required to melt the lead once it’s reached the melting point. I got the answer to part A. It is 1.8×... 
Physics
A 1200 kg car rounds a curve of radius 71 m banked at an angle of 11°. What is the magnitude of the friction force required for the car to travel at 82 km/h? My physics optional extra work: This would be helpful so I can compare the solutions here as I do the work by myself. 
Science: Please check answer
2. Once your rocket reaches space, the captain adjusts the speed. Your captain goes from 24,000 km/hr to 17,000 km/hr over 90 seconds. What is your acceleration? Beginning speed= 17,000km/hr Ending speed= 24,000 km/hr Time it took= 90/sec 1700024000= 7000/90= 77.778km/hr ... 
poetry
i have to write a poem about a food and i chose mac and cheese, it has to have 4 lines with end rhymes and i have the first three lines, can you please help me finish off the last one line. this what i have so far... 1.delicious taste of mac and cheese 2.makes all the kids ... 
Chemistry
please verify my answer: Consider the following REDOX reaction: Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb(s) a. Write the oxidation and reduction halfcell reactions. Zn(s) + Pb+2(aq) �� Zn+2(aq) + Pb(s) +2 +4 +2 +4 Zn(s)>Zn2+(aq)+2e (zinc is oxidized... 
Career...Help Please.
I have to write a 300500 word essay answering the following questions What benefits do you expect to achieve from career exploration? What do you expect to be the most challenging parts of your career planning process? Why? What questions do you hope to answer about career ... 
Spanish
you are preparing for a job interview for your dream profession. the job application asks you to write a paragraph eh espanol discussing the following things. please explain why you are interested in this profession, what activities will you do on a daily basis having this ... 
Algebra please help
Pain says she should get $3 discount on the price of each shirt and a $3 discount on the price of each pair of jeans. Part 1 Write and simplify an expression to find the amount she would pay if this is true. Part 2 why are the amounts Pani pays in a and b different? Part 3 if ... 
math
PLEASE HELP ME WITH THIS TRIGONOMETRY QUESTION!!? Edit Express each of the following in terms of another angle between 0 degrees and 180 degrees a. sin 50 degrees b. sin 150 degrees c. cos 45 degrees d. cos 120 degrees Update: we have not yet learnt it in class i'm trying to ... 
Grammar and Composition
please check these: 1. adamant _e_ 2. pathetic _g_ 3. tangible _j_ 4. auspicious _i?_ 5. altruistic _a_ 6. flippant _c_ 7. incorrigible _h_ 8. indolent _d_ 9. precarious _b_ 10. implicit _i?_ a. unselfish b. uncertain c. impudent d. lazy e. unyielding f. unquestioning g. ... 
college physics
An aluminum cup contains 225 g of water and a 40g copper stirrer, all at 27°C. A 400g sample of silver at an initial temperature of 87°C is placed in the water. The stirrer is used to stir the mixture gently until it reaches its final equilibrium temperature of 32°C. ... 
calculus
pleaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaasw help can you pleaaaaase help me find the area between y=cos(4x) and y=1cos(4x) 0<=x<=pi/4 i tried to solve it, and i got like : 2*sqrt3+ pi/12 is it right? if not please tell me how can i solve it...i'm really confused i found ... 
English Q#2
"Though I do hate him as I do hellpains, Yet, for necessity of present life, I must show out a flag and sign of love, Which is indeed but sign." i don't know what this quote means this is what i think: "even though i hate him but for now i will show my sign of loyalty" is ... 
Chemistry
Please Help!! I don't know how to balance this redox equation! I've been trying to solve this for hours and I'm getting nowhere Fe(s) + HClO4 (aq) > H (g) + FeClO4 I tried balancing and I got these Fe(s) + HClO4 (aq) > H2 (g) + Fe(ClO4)3 and 2Fe(s) + 6HClO4 (aq) &... 
Math Please Help!!!
John is at a car show. Beginning 2.5 miles away, a car travelling at a constant 45 miles per hour approaches and then passes John. The distance between John and the car can be represented by the equation d = 2.5 – 45t. At what times is the car 0.5 miles from John? Can ... 
Please help me with Trig
Given cos 67.5° = [√(2+√2)]/2, find tan 67.5° , simplify where needed, and show work. I'm starting to learn this stuff, and I'm so confused where to start. I know they gave me the coordinate X as in cos 67.5° = [√(2+√2)]/2, and I also know that tan... 
COLLEGE HELP LEASE PLEASE !!!!!!!
Is graduate tuition is tuition for graduate school? I want to become a nurse. Graduate tuition Nursing $828.00 per credit But here the tuition is $17,166 The annual total list price cost to go to Mercy was $31,928 I'm sooo confused please help. Does it cost more than $31,928? 
Physics (12th Grade)
An air bubble of volume 15 cc is formed at a depth of 50 m in a lake. If the temperature of the bubble while rising remains constant then what will be the volume of the bubble at the surface?(Given: g=10 m/s2 & atm. pressure = 1.0 * 100000 Pa) * Physics  Elena, Sunday, April ... 
physics help
Imagine you are in an open field where two loudspeakers are set up and connected to the same amplifier so that they emit sound waves in phase at 688 Hz. Take the speed of sound in air to be 344 m/s. If you are 3.00m from speaker A directly to your right and 3.50m from speaker ... 
Physics  Please Help
A ruler stands vertically against a wall. It is given a tiny impulse at θ=0∘ such that it starts falling down under the influence of gravity. You can consider that the initial angular velocity is very small so that ω(θ=0∘)=0. The ruler has mass m= ... 
need HELP PHYSICS!!
a) Calculate the P.E. a pile driver has if it is raised 4.5 meters by a mechanical winch. If the 510 kilogram pile driver is allowed to fall freely, what would its velocity be at ground level. b) A 4.2 kg mortar shell is fired out of a mortar with a velocity of 120 m/s. What ... 
chemistry
write the ionic equation and the balanced netionic equation for the following equations: Al2O3(s) + 6 HCl(aq) = 2 AlCl3(aq) + 3 H2O(l) And H2SO3(aq) + 2 KOH(aq) = K2SO3(aq) + 2 H2O and 2 HC2H3O2(aq) + Ca(OH)2(aq) = Ca(C2H3O2)2(aq) + 2 H2O and the final one is H2SO4(aq) + 2 ... 
Physics
A student places her 330 g physics book on a frictionless table. She pushes the book against a spring, compressing the spring by 9.90 cm, then releases the book 
Physics  Voltage across a wire of unknown length
Four copper wires of equal length L are connected to a 100V source. Their crosssectional area are 1cm^2, 2cm^2, 3cm^2, and 4cm^2. Find the voltage across the 3cm^2 wire. Leave your answer in terms of L, it should cancel out.  So I tried using and equating various relevant ... 
SCIENCE
For my science project i have to choose a sport and list five carefully thoughtout ways that Newton's three Laws of Motion are involed in the game i selected. The sport i have selected is tennis. i have 3 ways already but i am missing 2 more. Here are the 3 ways i have already... 
Physics
A .30kg softball had a velocity of 15m/s at an angle of 35 degrees below the horizontal just before making contact with the bat. What is the magnitude of the change in momentum of the ball while it is in contact with the bat if the ball leaves the bat with a velocity of a)20m/... 
Physics
Aqua dude can swim at a speed of 2.0m/s in still water. A river is 48 m wide and has a current of 1.5 m/s [E]. He starts at the Southbank and swims so that he is always headed directly across the river. A) what is Aqua dudes velocity relative to the shore? B) how long does it ... 
Math
1. The towns population increased from 80,000 to 90,000 in ten years. What was the percent of increase? I didn't understand this one. 2. A $15 item on sale for $12 is marked down what percent? 20% 3. If Jenna buys and item for 40% off the regular price, will she pay more or ... 
Physics
I listed the questions with my answers. Are the answers correct? Thanks. A railroad locomotive is a rest with its whistle shrieking, and then it starts moving toward you. a.) Does the frequency that you hear increase, decrease, or stay the same? The frequency of the waves ... 
Physics
There is a box resting on a table connected to a second box hanging off the edge of the table by a string that is run through a pulley. The mass of the first box is 3.50 kg. and The mass of the second box is 2.8 kg. What is the tension in the string connecting the two boxes ... 
business/daycare
please tell me where and how i can find daycare equipment on low prices or on sale in the Atlanta Georgia area. i don't know where to look for basic daycare equipment like tables, chairs, boards, sleeping mats, and playground equipment for children of ages 34. any help is ... 
Thematic unitsquestionPlease Help!!
I asked this question yesterday and didn't really get much help with it. Can someone please help? An appropriate way to make connections to thematic units involves: 1. crosscultural activities 2. developing interpersonal activities 3. the use of an appropriate software ... 
physics
my answer for these are 1. a 2.c 3 d but not sure so please anyone see if i am correct 1. In which of the following cases is work done on the object? A. Lifting an object off the floor. B. Pushing an object, but it does not move C. Carrying an object at a constant velocity D. ... 
Math Grade 12
So the question is basically asking which mountains peaks can be seen from Oahu. Island Distance(Mi) Mountain Height(ft) Lanai  65  Lanaihale  3,370 Maui  110  Haleakala  10,023 Hawaii  190  Mauna Kea  13,796 Molokai  40  Kamakou  4,961 A) Radius of earth= 3960 mi... 
to ms.suescience project part 1
so is the project basically asking to write down details abd information i learned about solar cars and to write down the websites? please read this and describe to me: Please select one of the four solarenergybased topics listed below to research. Based on your research you... 
Please can you help me (Probability)
Maria is playing a game of chance at the Hibiscus festival, costing $1 for each game. In the game two fair dice are rolled and the sum of the numbers that turn up is found. If the sum is seven, then Maria wins $5. Otherwise Maria loses her money. a) Please can you Construct ... 
7th grade social Studies questions Ms. Sue please
Hi Ms. Sue, can you please give me links to find the answers to these questions? I have looked everywhere!!!! Thanks!!! What other Things did the Telegraph lead to? What was Life Like Before The Telegraph? What Was Life Like After The Telegraph? What are The Positive And ... 
physics
A 0.82 kg physics book with dimensions of 32.4 cm by 20.1 cm is on a table. What force does the book apply to the table? Answer in units of N 
English  Please, please help :(
Hi. I need help with the following: Develop a Balanced Argument For The Following Scenario: Convince your significant other to use your income tax refund to buy a bass boat rather than spending it on new furniture. I'm supposed to use Ethos, Logos, and Pathos in this. Can ... 
Physics
It is friction that provides the force for a car to accelerate, so for high performance cars the factor that limits acceleration isn't the engine; it's the tires. For typical rubberonconcrete friction, what is the shortest time in which a car coukd accelerate from 0 to 80 ... 
Physics please check
A person who weighs 655 N is riding a 98 N mountain bike. Suppose the entire weight of the rider and bike is supported equally by the two tires. If the gauge pressure in each tire is 8.70 X 10^5 Pa, what is the area of contact between each tire and the ground? P=F/A A=F/P A=... 
PHYSICS ( PERIODIC MOTION)
In a lab, a student measures the unstretched length of a spring as 12.9 cm. When a 113.6g mass is hung from the spring, its length is 26.3 cm. The massspring system is set into oscillatory motion, and the student observes that the amplitude of the oscillation decreases by ... 
physics
Assume a planet is a uniform sphere of radius R that (somehow) has a narrow radial tunnel through its center. Also assume we can position an apple anywhere along the tunnel or outside the sphere. Let FR be the magnitude of the gravitational force on the apple when it is ... 
PHYSICS
Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side lengths are 6 m and the ... 
physics
Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side lengths are 6 m and the ... 
physics
Hi thanks for your help The answer to this problem is supposed to be 1870 [N (m^2)/ c] but im getting 1497 instead. If you could help me get the right answer that would be super. The problem says that there is a pyramid with a square base whose side lengths are 6 m and the ... 
Physics Help Please
Suppose you work at an amusement park. Your boss has asked you to determine the "people current," a measurement of moving people coming through the entrance of the park. a) what would be the units of "people current?" b) what information would "people current" provide? c) ... 
Physics Help Please!
Suppose you work at an amusement park. Your boss has asked you to determine the "people current," a measurement of moving people coming through the entrance of the park. a) what would be the units of "people current?" b) what information would "people current" provide? c) ... 
Geometry
1) Explain how you can use a straightedge and a compass to construct an angle that is both congruent and adjacent to a given angle. 2) When constructing a perpendicular bisector, why must the compass opening be greater than the 1/2 the length of the segment? 3) When ... 
math
ok i need help with these questions i have been trying to figure them out and my brain isnt working. please help and thank you ahead of time. if you can help. 4. Q.write and algebraic expression for the product of 15 and c A. IS IS C15 16. Q. define the variable and write an ... 
physics
a horizontal spring is stretched from its equilibrium position when a force of 0.75kg acts on it. then a force of 1.5 kg is attached to the end of the end of the spring and pulled 4.5 cm along a frictionless table from the equilibrium position. the body is then released and ... 
Algebra. Help me please!
Andrew decides to wait until age 65 to begin receiving social security benefits. Find the present value of his estimated $26,000 per year in payment assuming 6%per year and payment until his 90th birthday. A. $265,263.20 B. $322,3667.36 C. $338,082.42 D. $281,059.48 (Please ... 
calc (please help)
A wedge is cut from a right circular cylinder of radius r by two planes, one perpendicular to the axis of the cylinder and the other making an angle (beta) with the first. Find the volume of the wedge by slicing perpendicular to the yaxis. Please show all steps Note: this is ... 
Finite Math Please help!
Hi, I'm having trouble finding the overall output. output at A is pq output at B is ~q+r output at C is ~p(~q+r) What is is the overall output? I'm having trouble getting the EXACT answer with parethesis. Please help!! Thanks and God Bless!! 
Geometry. Please help.
1) Two angles are complementary. The measure of one angle is 21 more than twice the measure of the other angle. Find the measure of the angles. 2) If a supplement of an angle has a measure 78 less than the measure of the angle, what are the measures of the angles? Please don't... 
Physics
please check: Which of the following energy forms is associated with an object in motion? a. potential energy b. elastic potential energy c. nonmechanical energy d. kinetic energy i think its B Which of the following energy forms is associated with an object due to its ... 
Physics
What is the average velocity of the cart when moving from position x = 0.10 m to position x = 1.10 m? For X=0.10m on the time it took the cart to reach that position it is 0.34s The velocity of the cart at 0.10m is 0.87 For x=1.10m on the time it took the cart to reach that ... 
physics
in physics what is sqrt? 
physics
I HATE PHYSICS 
physics
why physics is not understandable? 
Math
please if anyone could help me with this question: 1. A class paid $20 for a cake and $4 per child for one slice of cheese pizza. they paid $140. how many children are in the class? 2. Rajie want to divide 24 peanuts, 64 raisins, and 56 apricots evenly into packets (with 0 ... 
Statistics
There are two boxes, each with several million tickets marked “1” or “0”. The two boxes have the same number of tickets, but in one of the boxes, 49% of the tickets are marked “1” and in the other box 50.5% of the tickets are marked “1”. Someone hands me one of... 
Physics
A magnifier has a magnification of 6x. How far from the lens should an object be held so that its image is at the near point distance of 25 cm? I tried doing the problem by using the equation M = 25cm / f. M = 25 cm/6 = 4.17 cm However when I put the answer into mastering ... 
physics PLEASE HELP
1.state the mathematical relationship between the net force acting on an object and the object's change in momentum. 2state the mathematical relationship between the net force acting on an object and the time taken to change the object's momentum 
physics
The 1.1kg physics book in figure is connected by a string to a 250g coffee cup. The book is given a push up the slope and released with a speed of 2.5m/s . The coefficients of friction are μs =0.50 and μk =0.20. How far does the book slide? 
Physics
You are enjoying the frictionless frozen surface of the Rideau canal with your friend. While together, you try a physics experiment in which you push off of each other at the same time. If your acceleration is 2 m/s 2, what is your friend’s acceleration, in m/s 2, if your ... 
Physics
A construction worker tosses a hammer straight up to a coworker who is working on a platform above him. The hammer leaves his hand at 7.26 m/sec, and travels 3.33 meters upward, at which point it is caught by the worker on the platform. (It is caught while still moving upward... 
Precalculus(NEED HELP ASAP PLEASE!!)
PLEASE HELP!! sin(theta)= 1/3 pi/2 < theta < pi Find: cos(theta)= ______ ? tan(theta)= ______ ? cot(theta)= ______ ? sec(theta)= ______ ? csc(theta)= ______ ? 
English
Rewrite the sentences using nouns to replace the phrases in italics. Example: She writes books for a living. She is a writer. 1. Emma loves being a mother. .................................... 2. Having friends is the most important thing for Pepe... 
Physics 141
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.60 104 m/s, and the radius of the orbit is 5.50 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 8.50 106 ... 
Physics 141
A satellite is in a circular orbit around an unknown planet. The satellite has a speed of 1.60 104 m/s, and the radius of the orbit is 5.50 106 m. A second satellite also has a circular orbit around this same planet. The orbit of this second satellite has a radius of 8.50 106 ... 
religion (please help)
explain what the cultural and societal influences that have made hinduism vital to the region in which it originated. Please tell us what you've learned. We'll be glad to critique your answer and respond to your ideas. ms.sue you should give this student the website for ... 
Please proofread
Please look over my report and let me know if their are any mistakes and if it is a good one. THanx Abraham Lincon was born in 1809. He was the 16th president. He was a good and nice president. He led us through a big,bad,and super scary war. He had four kids. He was married ... 
ENGLISH
Please check for any errors. Correct them for me. Thanks!! Congratulation on your superb achievement. Your new position offers a quite challenge. And I am sure, John that you are the right person for the job. I can think of no one that deserves the promotion more than you do. ... 
History  please check my answers
Which of the following of protections under the establishment clause of the first amendment? Select 2. A father objects to his sons school including a daily prayer <<< an Amish family objects to a law requiring schooling until age 16 restrictions are placed on the ... 
physics
Posted by sandhu on Tuesday, November 30, 2010 at 1:17am. A T is made of two identical 740 g thin solid rods. The moment of inertia of the T about an axis perpendicular to the screen through point at one end of a rod is determined experimentally to be 0.68 kgm2. What is the ... 
Physics
Sir can you help me to solve this question on Physics Two persons p and q are standing 100m away from a high wall and separated by distance d. P claps and q hears two sound (direct and echo) with a time difference of 0.2sec. Find the distance between p and q 
Physics
An airplane is circling an airport by traveling a horizontal circular path at a speed of 400 km/h. The bank angle of the wings is 20 degrees. What is the radius of the circular path the plane is flying? I honestly do not know where to start this. And it is an algebrabased ... 
Economics
Ive been stuck on this forever now if someone could please walk me through it i was appreciate it: 1: Suppose John had a utility function of U=X^2/3Y^1/3 . Derive Johns demand function from his utility function showing all the necessary steps. i know that the MUx=MUy and first... 
SOCIAL STUDIES
Is it true that Shah Jahan (emperor who built the Taj Mahal) was forced to cut off his hands after he built the Taj Mahal? If this is true then I need proof. I tried going on wikipedia but it doesn't say anything about that on history or any other heading. Please tell me is ... 
VALUES..PLS HELP ME..MS. SUE
CAN YOU HELP ME TO DISCRIBE ALL THE WORDS BELOW AND PLEASE CAN YOU GIVE EXAMPLES.THANKS A LOT GOD BLESS YOU ALWAYS. PLEASE HELP ME. •Being capable of rational thought nd action – not irrational thought and action. •Being independent – not dependent •Being decisive... 
Social studies please help! please !
1. which region was home to the SIOUX ? The eastern Woodlands of North America southern Mexico and Central America The pacific northwest of North America The central Plains of north America 2. which represents the Aztec adaptation to their environment a surplus of farm crops ... 
physics
A spherically symmetric object, with radius R = 0.50 m and mass M = 1.3 kg, rolls without slipping across a horizontal floor, with velocity V = 2.1 m/s. It then rolls up an incline with an angle of inclination θ = 25° and comes to rest a distance d = 3.0 m up the incline... 
Algebra: Please help
Solve for B: square root b^4/25 = 4. A.) 2 B.) +/ 5 square root 2 C.) 3 D.) +/ 2 square root 5 I don't know how to do these so please show your work. Thank you. 
Physics 11 steve, bob,physics expert pls URGENT!!
Coefficiant of friction between rubber tires and wet pavement is 0.50. brakes are applied to a 750kg car, intitally travelling at 30m/s and the car skids to a stop. What is the size and direction of the acceleration of the car. 
PreAlgebra
Write a number sentence for the product shown on the number line ___________________ 10 8 6 4 2 0 2 The answer i came up with is 10 Because 5 times 2 equals ten. Please and thankyou I'm not sure what's meant by a 'number sentence' here Bowier4. Could please explain this... 
statistics  can someone please Help me
I have tried for days to figure out how to work this problem. Please help show me how to find the answer. A particular radioactive isotope decays from 210 mg to 182.7 mg in 15 days. Find the half life of the isotope. I can not find any problem that is similar. everything i ...