Questions Asked on
February 6, 2016

Physics
A block of mass m = 2.00 kg is released from rest h = 0.500 m from the surface of a table, at the top of a theta = 30.0° incline. The frictionless incline is fixed on a table of height H = 2.00 m. (a) Determine the acceleration of the block as it slides
asked by Edge 
English Grammar
Prepositions 1. The examination is ____ hand. 2.The office is closed ____ the second and fourth saturday.
asked by Ri 
LIFE ORIENTATION
FOUR WAYS IN WHICH SPORT CAN SUPPORT NATION BUILDING.2 TWO ISSUES IN SPORT THAT IMPEDE NATION BUIDING.3.WHAT CAN TRIGGER SPECTATOR AGGRESSION IN SPORT.
asked by MOHLALA 
English Grammar
Change to Affirmative 1.No man in the street came forward to help her. 2.None of them were bad. 3.Nobody was present in the family function.
asked by Ri 
Spanish
Conjugate the following irregular verbs in the simple present tense (Indicative). 6. tener (to have) yo ________________________ 7. tener (to have) nosotros ________________________ 8. venir (to come) tú ________________________ 9. venir (to come)
asked by jake 
math
The master bedroom of Julie's new apartment measures 10.5 feet by 16 feet. What is the area of the room?
asked by Jessica 
statistics
the ages of the members of a gym have a mean of 44 years and a standard deviation of 12 years. what can you conclude from Chebyshev's theorem about the percentage of gym members aged between 26 and 62?
asked by dianne 
Physics
Real world trampolines lose energy since they are damped springs with much internal friction. How much energy does the sumo wrestler lose on each bounce in this situation? Information I was given: mass=400 kg gravity=10N/kg k = 12000 N/m I also know from
asked by Charlotte 
statistics
1. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and a standard deviation of 4. Do not use the web calculator to answer the following questions. Instead, use the Z
asked by Anonymous 
math
two boats p and q are at points whose position vector are 4i+8j and 4i+3j respectively. both of the boats are moving at a constant velocity of p is 4i+j and q is 2i+5j. find the position vectors of p&q and pq after t hours, and hence express the distance
asked by Joshua 
physics
The vector position of a particle varies in time according to the expression r with arrow = 6.60 i − 9.00t2 j where r with arrow is in meters and t is in seconds. (a) Find an expression for the velocity of the particle as a function of time. (Use any
asked by Mohammed 
sinusoidal functions
State an equation of a sinusoidal graph with the following properties. The central axis is at y = 5 Two consecutive minimums are found at (3, −1) and (13, −1 find values for a,b,c and d
asked by jordan 
math
Which of the following is an example of a variable expense? A rent B groceries C wages D car insurance cant figure this out! help?
asked by Anonymous 
Chemistry
Equilibrium is established between Br2(l) and Br2(g) at 25.0*C. A 250.0 mL sample of the vapor weights 0.486g. What is the vapor pressure of bromine at 25.0*C, in mmHg?
asked by Yvette 
algebra
June has $1.95 in dimes and nickels. She has a total of 28 coins. How many of each type of coin does she have?
asked by Anonymous 
Chemistry
An aqueous solution is composed of 7.50 g NaCl (MM = 58.44 g/mol) diluted to 0.100 L. Calculate the osmotic pressure of the solution at 298 K a. 5.83 atm b. 9.22 atm c. 18.3 atm d. 62.8 atm
asked by Kat 
pysics
The quantity of heat required to raise the temperature of 500g of copper from 16oc +116oc assuming the specific heat capacity of copper =400j /kgk
asked by Damilola 
Physics
A ball is projected horizontally from the edge of a table that is 1.14 m high, and it strikes the floor at a point 1.40 m from the base of the table. It's initial velocity is 2.9 m/s. How high is the ball above the floor when its velocity vector makes a
asked by C 
chemistry
. In the following reaction: Fe2O3 + 3C → 2Fe + 3CO; how many grams of C are needed to react with 16.5 g Fe2O3?
asked by john 
Maths
A pedestal is constructed in the form of frustum of a pyramid, the sides of the square ends of the frustum being 360cm and 160 cm and slant height 260cm. Find volume , lateral surface area including area of the top and the cost of construction @ rs.50
asked by Chaitanya 
Math
For each of the functions below, state the domain and range, the restrictions, the intervals of increasing and decreasing, the roots, yintercepts, and vertices. b) f(x)=+squareroot x−2
asked by Carter 
math
A parking garage charges $K for the first hour or fraction of an hour and $2/3K for each hour thereafter. Bill parked 7 times as long as Ray. If Ray parked for 1/2 hour, Bill paid _____ times as much as Ray.
asked by Jessey 
Math
Poor Delbert has been asked to do some tiling at home. He doesn't really understand the pattern. Can you help? How many black tiles to white? (1to every 2) There are 12 tiles in the pattern. Suppose there ere 60. How many black tiles will Delbert need
asked by Sameeha 
math
Two trains started at the same time from the same station and traveled in opposite directions.One traveled at a rate of 50mph and other at a rate of 60mph.In how many hours were they 660 miles apart?I want to know if my answer is correct. 50t+60t=660
asked by Kiki 
math
An aeroplane taking off from a field has a run of 500 meters. What is the acceleration and take off velocity if it leaves the ground 10 seconds after the start ?
asked by younis 
physics
A 3.6kg cat is sitting on the edge a merrygoround that is spinning at 2.7 rad/s. The diameter of the merrygoround is 5.6 m. How large is the static friction between the cat’s paws and the surface of the merrygoround if it does not slip off?
asked by Mary 
math
31 gallons of gas cost $82.15. what is the unit rate for 1 gallon of gas
asked by shynice 
math
if the unit price for a cantaloupe cost 0.65 per pound and sally pays 1.95 for a cantaloupe how many pounds does her cantaloupe weigh? A. 2 pounds B. 3 pounds C. 4 pounds D. 5 pounds
asked by shynice 
Calculus
The fuel consumption (gallons per hour) of a car traveling at a speed of v miles per hour is c = f(v). 1) What is the meaning of the derivative f ' (v)? answer: rate of change of fuel consumption as miles go up 2) What are its units? answer: miles per
asked by Maia 
math
4 Luke can purchase a 12pound item from several different retailers. Which of the following is the best buy? A Buy online for $15 plus pay shipping and handling costs of $0.79 per pound. B Buy online for $17 plus pay shipping and handling costs of $0.69
asked by Anonymous 
Calculus
How do I use three vertices to calculate the area of a triangle? The three vertices are (0,0), (2,1), and (1,6). I've figured out that the equations of the lines that make up the triangle are y = 6x, y = (1/2)x, and y = (5/3)x + 4.34ish. Now I have to
asked by Anonymous 
chem 12
1.00 mol of N2O4 and 1.00 mol of NO2 are placed in an 800 mL container. Calculate the initial concentrations of each gas. N2O4= 1.25 mol/L NO2=1.25 mol/L When equilibrium is reached, the concentration of NO2 increases by 0.50mol/L. Calculate the
asked by George 
math
If 14 out of 20 people like chocolate milk, what percent of the people do not like chocolate milk? a.5% b.30% c. 40% d.70%
asked by shynice 
maths
a bicycle wheel has a diameter of 42 cm.how many revolutions will it make to cover a distance of 13.2km
asked by daniel 
Is444
A newspaper carrier has $5.30 in change. He has ten more quarters than dimes but two times as many nickles as quarters. How many coins of each type does he has?
asked by tony 
calc
The quantity (in yards) of a certain fabric that is sold by a manufacturer at a price of p dollars per yard is Q = f(p). 1) What is the meaning of the derivative f ' (16)? 2) What are its units? 3) Is f ' (16) positive or negative? Explain.
asked by molly 
master chemistry
The rate constant of a chemical equation has increased from 0.100s^1 to 2.70s^1 upon raising the temperature from 25C to 45C. Find the activation energy. So far I done 3.30=(Ea/8.314)(2.11x10^4)
asked by Jay 
Calculus
An architect wants to design a window in the shape of a rectangle capped by a semicircle. If the perimeter of the window is constrained to be 24 feet, what dimensions should the architect choose for the window in order to admit the greatest amount of
asked by Ethan 
Physics 30
A. Calculate the net force on q2? b. calculate the net force on q3? q1= +2.0 MC q2=+3.0 MC q3=+6.0 MC q130cmq245cmq3
asked by elaine 
Physics 30
calculate the netforrce on q2? calculate the net force on q3? q1=+3.0 MC q2=+3.0MC q3=6.0MC q120cmq2 I I I 50 cm I I I q3
asked by elaine 
English
Traditional African marriage is an advantage for men only,not women?
asked by masoka jabulane 
physics
Two 4 meter lorry cars are moving along the same direction on a straight road with a constant speeds of 70 km/hr and 90km/hr. if a passenge falls asleep when the faster car is 20m behind the slower car but wakes up after it is 20m ahead of the slower car.
asked by Israel 
maths
In triangle PQR QM perpendicular to PR, RN perpendicular to PQR, H is ortocentre of triangle PQR then PNHM is 
asked by sanjay 
physics
a ball thrown by a boy is caught by another after 2 second soome distance away in the same level. If thr angle of projection is 30 degree, the velocity of projection will be?
asked by shikha 
Math and Physic
an egg parachute was drop at a building with a time of 7.57 sec. what is the height of the building and velocity.
asked by Evangeline 
physics
What's the solution of a body of weight 100N resting on a plane which is inclined at 30° to the horizontal with the components of the weight parallel and perpendicular to the plane?
asked by Rose khonje 
Physics
A rubber ball of mass 0.12kg is held at a height of 2.5m above the ground, and then released.
asked by Onofiok 
Math
Poor Delbert has been asked to do some tiling at home. He doesn't really understand the pattern. Can you help? How many black tiles to white?(1 to every 2) What is the proportion of black tiles to the whole pattern(1/3) What is the proportion of white
asked by Sameeha 
Mathematics
2x^2*4x=0
asked by Williams 
Maths lit, economics, lifesciences, agriculture, lifeorientation, sepedi, english
What career would I do nd which course will I do at University?
asked by Vmash 
Math
Can you show me how to do this problem: Find the missing dimensions of triangle XYZ. The info it gives me is side X has the number 2, Side Y has the letter m , and Z has the letter n. What do I do for this?
asked by Mary 
SyEd
IUPAC name of (CH3)3.C.CH2
asked by ZulFi 
Math
Can you show or explain how to do this? Julio uses a scale of 1/8 inch= 1 foot when he paints landscapes. In one painting, a giant sequoia tree is 34.375 inches tall. How tall is the real tree?
asked by Lenny 
Math
Fehima has 4 times as many dimes as quarters.If her dimes and quarters have a value of $3.90, how many of each coin does she have?I want to know if my answer is correct. D=4(q) 0.10d+0.25q=3.90 0.10(4q)+0.25=3.90 0.40q+0.25q=3.90 65q=3.90 65 q=0.06 65q
asked by Kiki 
statistics
"using the descriptive statistics for the weight of the babies in ounces, suppose a friend of yours has given birth to a 10 pound 3 ounce baby"
asked by Perry 
mathematical Literacy, Economics and Business Stud
What career(s) can I pursue with these subjects? Please help. I am very lost.
asked by Sharon 
English Grammar
Please check if its correct Change from Positive to Negative 1.None of them were bad  All of them were good 2.Nobody was present in the funeral function Everybody was absent from the funeral function
asked by Ri 
English Grammar
Change it to positive without changing the meaning. No man in the street came forward to help her. Should it be "Every man in the street stood where they were."??
asked by Ri 
english
Which value is reflected in Heracles ?
asked by mike colbra 
Algebra
the length of bill's backyard swimming pool is 60ft longer than the width of the pool. the surface area of the water is 1600 square feet. what is the width of the pool?
asked by Vict 
physics
A disc has a mass of 340kg, and is mounted to a frictionless axle and is free to rotate around it. Model the shape of the disc as a hollow shaft on axis where the inner and outer diameters are 600mm and 1200mm respectively. A wire is wrapped around the
asked by Jeff 
Geography
Draw a table like the one below into your exercise book. With reference to the Simple model of an ecosystem (on page 2), suggest possible ways that each of the components of an ecosystem can influence each other. Climate Vegetation Fauna Landforms &
asked by Sara 
^HYDRAULICS AND HYDROLOGY^
Pls...,need help. QUESTION=Water flows through a pipe of diameter 300mm with a velocity of 5m/s.if the coefficient of friction is given by f=(0.015)+(0.08/Re^0.3) where Re is the Reynoid number. Take kinematic viscosity of water as 0.01stoke. *Find the
asked by Ekingdeft 
geography
Suggest 2 ways people in LEDCs could prepare for an earthquake...and also suggest 2 ways people in MEDCs could prepare for earthquake...Thank you for all your help..
asked by Damian 
SOCIAL STUDIES
How did the results of the presidential election in 1860 influence South Carolina’s decision to secede from the Union?
asked by ^^ 
physics (mechanics)
find the constant force necessary to accelerate a car of mass 1000kg from 15m/s to 20m/s in 10s against resistance of 270N ? pls show work (answer is 770N just in case to check)
asked by sam 
English
What's a good website to check writings: paragraphs? If free much better.
asked by Eliabeth 
social studies help
How did the MexicanAmerican War ignite a conflict over slavery between the North and the South?
asked by KJMLNMONO 
Calculus with Analytical Geometry
Find the present value (PV) of the annuity with each payment of $3500 at the end of each year for 3 years in an account that pays 6% compounded annually.
asked by Sherianna 
Maths
In a group of 60 people, 27 like cold drinks and 42 like hot drinks and each person likes at least one of the two drinks. What is the probability that a person chosen at random likes both coffee and tea?
asked by TJ 
physical science
Determine the magnitude and direction of a resultant force on 500N,200N and 300N by calculating or by accurate construction and measurement use scale 10mm=50N
asked by mongi 
Algebra
the length of bill's backyard swimming pool is 60ft longer than the width of the pool. the surface area of the water is 1600 square feet. what is the width of the pool?
asked by Vict 
physics
calculate numerical value of current in inductor resistant circuit. l=1mH r=3k (ist=1ma at t=0) i1(t=1us)in ma. i0=1ma my work. i=i0(1e^(t/T)) 1*10^3(1e^(1/0.33) i=0.952ma this is wrong do I need to add initial current to this(1ma). why is this
asked by bearinthewoods 
Math
Please help. Julio uses a scale of 1/ 8 inch 1 foot when he paints landscapes. In one painting, a giant sequoia tree is 34.375 inches tall. How tall is the real tree?
asked by Sal 
Math
9/2 written as an integer or simplified fraction
asked by Skylar 
Math
What is the formula The value of Dave's Camaro decreased by 30%. The car is worth $14,000. What was the purchase price?
asked by Michael 
Physics
Two capacitor plates are equally and oppositely charged. They are separated by 1.30 cm. An electron is released from rest at the surface of the negative plate and, at the same time, a proton is released from rest at the surface of the positive plate. Where
asked by Sam 
Math Radicals
(2√5+3)(2√5+3)= a + b√c+d Figure out the binomial to find a,b,c,d
asked by Chad 
math
which pair of ratios can form a true proportion 9/12,5/8 25/20,16/21 6/27,2/9 7/12,10/15
asked by shynice 
Physics
Tow force are acting 50 degree apart, one of 200g grams and one of 300 gram. Fine the resultant force, its magnitude and the direction it makes with the original tow vectors
asked by Roben 
Chmistry
how to calculate ph if given contain 0.63g og hno3 pet 100 ml solution
asked by Fofo 
english
is this sentence a predicate pronounMy boyfriend became my best friend
asked by ginger 
Social Studies
How do the branches of government work together?
asked by bopper 
math
at a local sports event students paid $3.00 each and non students paid $5.00. There were 120 more students at the event than non students. if the total receipts were 2960 how many tickets of each were sold?
asked by angel 
math
Order from greatest to least 1/8,36%,0.05,0.078
asked by shynice 
English
Why I can't concentrate to write an essay? I don't want to fail the class. Please, I need help.
asked by Eliabeth 
Math
The perimeter of an isosceles triangle is 36 meters.Five times the length of the base is 2 meters less than three times the length of each of the congruent sides.How long is each side of the triangle? Work a+b+c=36. 5(b)=3(c)2
asked by Genell 
math
Juan's father is 4 times as old as Juan.Twentytwo years from now he will be twice as old as Juan.What are their ages now? My work 4(F)=J 22(2)=J
asked by Gigi 
math
Order from greatest to least 1/8,36%,0.85,0.078
asked by shynice 
algebra
The sum of two numbers is 19.Five times the lesser number is four more than twice the great.What are the numbers?I'm trying to figure out if my answer is correct. 5(b+19)=4+2(b) a+b+19 b a=b+19 5(b+19)=4+2(b) 5b+95 =4+2b 2b 95 2b 7b 7b =95 7
asked by Remi 
algebra 2
what is the domain for x^22x ?
asked by Alicis 
Math
Can someone help or show me how to do this problem? On a scale drawing of a house plan the master bathroom is 1 1/2 inches wide and 2 5/8 inches long. If the scale of the drawing is 3/16 inches=1 foot, what are the actual dimensions of the bathroom?
asked by Max 
Linear Algebra
True/False question Suppose that A is a 2 x 3 matrix such that A[1, 1, 1]^t = [2, 3]^t = A[2, 3, 4]^t. Then [1, 2, 3]^t belongs to the nullspace of A. I have no idea how to start this question/what it means.
asked by Anon 
Math
Ingrid walked her dog and washed her car . She spent 3 times as much time washing her car as she did walking her dog. it took Ingrid 1 1/2 hours to wash her car .How long did it take Ingrid to walk her dog ? Equation: Variable represents:
asked by Anonymous 
math
the distance between spice island and Kay island is 3.4 inches on a map if the scale on a map is 1inch=25 miles what is the actual distance between the 2 islands? A. 28.4 miles B. 75 miles C. 85 miles D. 850 miles
asked by shynice 
Do I have time
Today is Saturday in New York my birthday is in 3 day and my report is due in three days so I have written 2 paragraph I have to write 6 I have Monday off this report is about Dr.Daniel Hale Williams I am turning 10 in the fourth grade plz tell me if I
asked by Essence loves math 
Accounting 100
a) Purchased equipment on account for $950 b) Paid $600 on equipment purchased in transaction (a) How do I post (b) to the journal?
asked by Cami 
science
a 2kg stone is dropped from the top of a 20 buliding (a) at what height does its potential energy energy equal to its kinetic energy?
asked by richard 
PreCalculus
f(x) = 7x^3 + 8x^2  3x + 8 Find f(7) using synthetic division, and list the numbers in the bottom row of the division. My answer: The numbers in the bottom row are 7, 58, 403, and 2829. The answer is 7x^2 + 58x + 403 + 2829/x  7.
asked by Anonymous 
business studies, maths lil, tourism and economics
if i am doing these subjects what can I be pls help
asked by Jeanette Rasilwela 
business studies, maths lil, economics and tourism
Iam doing, economics, business studies, tourism and maths lil can I be a manager pls help meee
asked by Jeanette Rasilwela 
Algebra
Given the equations y=16 and y=3. Determine the slope and yintercept if any exist. I have determined that the slope is 0 for both equations because it is a horizontal line, but I don't know what the yintercepts are?
asked by David 
maths
the diagonal of a rectangular plot is 250m long. If the length of a side is 125m, find the angle of the diagonal makes with this side
asked by jaya 
PreCalculus
x = 2/7 is a root of 49x^3  126x^2 + 60x  8 = 0. Factor the polynomial completely and list all real solutions. My answer: (x  2)(7x  2)^2 = 0 factored, and the solutions are x = 2 and x = 2/7.
asked by Anonymous 
maths
how to construct 57.5 degree angle using a ruler and a compass
asked by Hari 
Spanish
Empezar in Affirmative tu positive, negative and empezar in negative usted and ustedes commands
asked by Anonymous 
Physics
A body of mass m falls from rest through the air. A drag force D = bv^2 opposes the the motion of the body. The acceleration due to gravity is g. A) What is the initial downward acceleration of the body? B) After some time the speed of the body approaches
asked by Lauren 
physics
If you jump off a 10 meter cliff on the Moon, and the acceleration of gravity is 1.6 m/s^2. How fast are you going when your feet hit the bottom of the cliff?
asked by Jules 
calculus
How to calculate the volume of rotating object formed by the area between curve y=x^2 and y=3x which is rotating through : a. x axis b. y axis ; using skin tube methode
asked by bruge 
math
What is ((8)) I believe it's 8 because of the double negative if you work inside the parentheses first?
asked by John 
Verbal reasoning
which words among the three (Rapid;jump and fly) are best opposite in to these three words: Slow;crawl and fly ?
asked by Johnson 
Math
Given the equations y=16 and y=3. Determine the slope and yintercept if any exist. I have determined that the slope is 0 for both equations because it is a horizontal line, but I don't know what the yintercepts are?
asked by David 
chemistry
how do i decide which stationary phase to choose if solute i want to separate is relatively nonpolar??
asked by Anonymous 
Math
On an airplane there are two seats on the left side in each row and three seats on the right side. There are 150 seats altogether. Can someone help me?!
asked by Anna 
Math
If a valid time on a 12 hour time period has the hour hand and minute hand switched, how many times will that result in another valid time? I have found 11, which is when the hour hand points at the same place as the minute hand. I know there is much more,
asked by Andre 
Writing
What types of essays are there, and when do you use each one? It's an assignment.
asked by Alie 
English
I have to write an essay, but I feel that I really need help, don't know how to structure one, connections and so on. What do you suggest I need to do to start off?
asked by Suhna 
Calculus (polar coordinates)
Use polar coordinates to set up the double integral x dA, where the bounds are given by the region lying in the intersection of the 2 circles r = 2 sin (theta) and r = 2 cos theta. Thanks for any help!
asked by Lucie 
math
Tom and Burt are to take turns removing either 1 or 2 marbles from a circle. There are 7 marbles. The person selecting the last marble is the loser. If Tom goes first and each of them makes the best possible removals, then who will lose the game?
asked by dero 
Physics
A stone is dropped from the roof of a high building. A second stone is dropped 1.08s later. How far apart are the stone when the second one has reached a speed of 15.0?
asked by Kelli 
physics & math
If you jump off a 10 meter cliff on the Moon, and the acceleration of gravity is 1.6 m/s^2. How fast are you going when your feet hit the bottom of the cliff?
asked by Jules 
physics
Two capacitor plates are equally and oppositely charged. They are separated by 6.30 cm. An electron is released from rest at the surface of the negative plate and, at the same time, a proton is released from rest at the surface of the positive plate. Where
asked by niro 
Social Studies
(blank) taught that people need a strong ruler to maintain order daoism (i picked) legalism buddhism none of these
asked by little dark one 
CALOCAN ELEM.
THE TENS DIGIT OF TWODIGIT NUMBER IS 4 MORE THAN THE ONES DIGIT.WHAT NUMBERS CAN BE?
asked by JORGE ORDENEZA 
math
A man seated on a chair has a mass of 85 kg. Known that the mans weight is distributed so the chairs back legs support twice as much as the front legs. What is the mass taken by each leg?
asked by Daniel 
PHYSICS
how far apart are two point charges of 5.0x10^6 C and 6.0x10^6 C if they produce an electric force on each other of 0.62 N?
asked by elaine 
Physics 30
Two point charges objects produce an electric force on each other of 3.6x10^2 N. What is the electric force between them if the distance is increased five times?
asked by elaine 
Physics 30
A circuit with a single 25.0 omega resistor runs for 5.00 s. During this time10.0 C pass through a point in the circuit. a. What is the power rating of this circuit? b. How much energy is used?
asked by elaine 
Physics 30
The circuit has two resistors? V= 22V R= 27 Komega R=? I= 12mA
asked by elaine