Questions Asked on
January 29, 2017

solar science physics
Which of the following statements is NOT true about solar inverters? A standalone inverter is supposed to work as an AC voltage source for a specified range of AC loads. An ideal gridtied inverter has its operational voltage and frequency synchronized
asked by pritam 
Precalculus
Let $\mathcal{G}$ be the graph of the parametric equations \begin{align*} x &= \cos(4t),\\ y &= \sin(6t). \end{align*}What is the length of the smallest interval $I$ such that the graph of these equations for all $t\in I$ produces the entire graph
asked by Zheng 
solar science physics
On the lefthand side of the figure below a IIIV triple junction solar cell is shown. On the righthand side, the JV curves of the individual component cells and the multijunction solar cell are shown. Which junction corresponds to sub cell 3?
asked by pritam 
math
So a moped travels at 40km/h for part of a trip and 10km/h for the remainder. If it takes 5.75 hours to travels 185km, how far did it travel at each speed?
asked by Cookie 
physics
A piece of copper ball of mass 20g at 200°c is placed in a copper calorimeter of mass 60g containing 50g of water at 30°c ignoring heat losses.calculate the final steady temperature of mixture.(specific heat capacity of water=4.2jg1k1)
asked by Abiodun 
English
peer pressure destroys character yes or no?.
asked by Stephen 
English
1.) Read the following lines from the poem Africa. "Impetuous son that tree young and strong. that tree there in splendid loveliness amidst white and faded flowers. that is Africa your Africa. that grows again patiently obstinately. and its fruit gradually
asked by Stephany 
math
An ice cream van sells 3 different icecream flavours with 4 different toppings. How many different choices can be made using only one of the icecream flavours and only one of the toppings?
asked by veekas 
English
Please please please check my answers and explain to me why they are right or wrong!!! 24.) Choose the correct voice of the underlined verb. (1 point) The pitcher THREW the ball to the catcher. a.) active** b.) passive 25.) Choose the correct voice of the
asked by Emmy 
economics
Indicate if each newspaper headline below deals with a microeconomics (micro) or a macroeconomics (macro) issue. Pepsi to Introduce a New flavor  micro Russia Devalues Currency  macro Red Cross Needs Blood micro Microsoft Still TiedUp in Legal battle 
asked by Anonymous 
Chemistry
Given Ka values of 5.76×10^10 & 4.8×10^10, for NH4+ anf HCN.what is the equilibrium constant for following reaction? NH4+ + CN >< NH3 + HCN
asked by Rishi 
Math
one track coach wants his athletes to race 8 miles around a track to measure how fast each person can run if the track is 2/3 of a mile around. How many laps around the track will the athletes have to run to complete the race?
asked by Anonymous 
English
Read the following line from "The Pin": I felt like a character in an old Jimmy Stewart movie. The reference to "Jimmy Stewart" in this line is most likely intended as a (an) _________ allusion. a.) biblical b.) literary** c.) historical d.) mythological I
asked by Emmy 
Science
A white eyed male Drosophila is crossed to a red eyed female all the resulting progeny have red eyes. A. This shows that eye colour is sex linked. B. This shows that eyes are recessive to white eyes. C. Both of the above. D. None of the above I think it is
asked by Kathy 
Math
Solve the Identity cot (x)/ (csc(x)1)= (csc(x)+1)/cot (x)
asked by Sandra 
Algebra
Last year the population of Spoon Forks grew from 1250 to 1300. If the population of the town grows by the same percent this year, what will the population be?
asked by Madison 
Maths
A store marks up the price of a lounge by 80%. What percentage discount would bring the price of the lounge suite back to its original price?
asked by Ripley 
Help Social Impact of Technology
Respecting energy, in Leslie White’s formula, E=P*T, “T” stands for: A. the measure of energy efficiency. B. the sum of energy produced. C. energy production per capita. D. a measure of energy dissipation per capita. An:D
asked by Angela 
Earth Science
What are the maximum and minimum dimensions (the size range) for the following particle sizes? a) cobble: b) pebble: c) sand: PLEASE HELP
asked by Maya 
Chrmisty
Find the pH at each of the following points in the titration of 25 ml of 3.0M HF with 0.3 M NaOH. The Ka value is 6.6x104. After adding 25 ml of 0.3M NaOH
asked by Brooke 
Physics
On the map, let the +xaxis point east and the +yaxis north. A)An airplane flies at 990 km/h northwestward direction (i.e., midway between north and west). Find the components of its velocity. B)Repeat for the case when the plane flies due south at the
asked by Anonymous 
Maths
There are m boys and 12 girls in a class what is the probability of selecting of random 1 a girl 2 a boy from class
asked by Joy 
mico vs. macro
Indicate if each newspaper headline below deals with a microeconomics (micro) or a macroeconomics (macro) issue. Pepsi to Introduce a New flavor  micro Russia Devalues Currency  macro Red Cross Needs Blood micro Microsoft Still TiedUp in Legal battle 
asked by Anonymous 
organic chemistry
The constants for Antoine’s equation for TCE (based on log10 and o C) are: A= 6.5183, B = 1018.6 and C = 192.7. If a container (negligible volume) is placed in a sealed room 1000 m3 at 30 oC, how many grams of TCE will evaporate upon reaching equilibrium
asked by Lauren 
Math
Seth has three more than twice as many baseball cards as Aaron. Together they have 33 baseball cards. How many cards does Seth have? Answer: I dont understand please help
asked by Edgard 
linear algebra
Hello, how can I proof the next theorem? I have a linear transformation T(X) that can be express as T(X)=AX and A is an orthogonal matrix, then T (X)=X , I was doing this: T (X)=sqrt() But I don't know what to do with the orthogonal matrix..
asked by Mery 
Trigonometry
A plane at an altitude of 12,000 feet finds the angle of depression for a building ahead of the plane to be 10.4 degrees. With the building still straight ahead, two minutes later the angle of depression is 25.6 degrees. Find of the plane relative to the
asked by Manuel 
English
.) Read the following sentences from "The Pin". "That all changed when my family moved. My new school is three times bigger than my old school. At first, no one here knew me. The kids were polite, but they did not treat me like a good friend. For a few
asked by Emmy 
english
Identify the compoundâ€‹ verb: On theâ€‹ weekends, I exercise and do things with friends. A. â€‹exercise, do things B. â€‹exercise, do C, on the weekends
asked by Amber 
so
Which junction corresponds to sub cell 3? Sub cell based on Ge. Sub cell based on GaAs. Sub cell based on GaInP. Sub cell based on GaInAs.
asked by pritam 
statistics
. At the .05 significance level, is there a difference in the mean number of calls per day between the two employees? What is the pvalue?
asked by DEBORAH SLIGH 
mathematics
a(x+b)=c by making x the subject of the formula. ax+ab=c divide both sides by an a(x+b)÷ab=c ÷ a+b ax=c/a+b
asked by Rukayya Junaid 
solar science physics
Consider a leadacid battery with 500 Ah capacity and a rated voltage of 12 V. What is the total capacity of energy in watthours that can be stored in the battery?
asked by pritam 
Physics
You drive 109 km/h east for 31 min , then 82 km/h north for 42 min . Let the +xaxis point east and the +yaxis north. A)Find your average velocity for the entire trip. B)Find your average speed for the entire trip. You should probably do part b first.
asked by Anonymous 
Physics
A baseball hit just above the ground leaves the bat at 27 m/s at 45∘ above the horizontal. A)How far away does the ball strike the ground? B)How much time is the ball in the air? C)What is its maximum height? Find the time for the ball to go the
asked by Anonymous 
7th G science
What is/are the main factor(s) that determine(s) the height of a plant (genetics, environment, or both)? Explain your answer. I think that only genetics play a role but I am not sure.
asked by softball lover 
Math
A plane flies from city x to city y against the wind in 8 hours and flies back from city y to city x with the wind in 5 hours. If the speed of the wind is 650 mph, find the wind speed in mph?
asked by Samiya 
Math
From 1980 to 1990 the population of London increased by 6%. From 1990 to 2000, the population of the city decrease by 3%. What was the overall percentage change in the population of London from 1980 to 2000?
asked by Samiya 
Physics
A dram of mass 100kg is rolled into the deck of long 1.5m above a horizontally floor using a plank 4m long.calculate the work done against gravity during the process [Take g=10ms'2]
asked by Yegh margaret 
Physics
The velocity graph of a particle moving along the xaxis is shown. The particle has zero velocity at t=0.00s and reaches a maximum velocity, vmax, after a total elapsed time, t total. If the initial position of the particle is x0 =6.22m, the maximum
asked by Mary 
Coordinates
prove that the points (4,3), (2,2),(8,2)are the vertices of a right angled triangle.
asked by Balan 
Geometry
find the equation of an elipse whose vertices are (2, 2) and (2, 4) and whose eccentricity is 1/3
asked by Tundr 
Geometry
a regular triangular pyramid has all of edges of length 36. What is the angle between any two faces of this pyramid.
asked by Juan 
physics
starting from rest, a car accelerates at a constant rate of 3 m/s^2for a time of 5 s; a. compute the velocity of the car at 1 s, 2 s,3 s, 4 s, and 5 s and plot these velocity values against time. b. compute the distance traveled by the car for these same
asked by sumaiya 
math
1. a number is subtract from 20 the result is 10 what is the number 2.i multiply a number by 10 and where 12 is remove the result is 18 what is the number 7
asked by ukasha aminu musa 
Discrete math
(a) Use the Euclidean Algorithm to nd gcd (2017; 271) and use this to nd integers x and y so that gcd(2017; 271) = 2017x + 271y. (b) Is it true that for all integers a and b, if not both a and b are zeros then not both
asked by Mariaaaaaaa 
Help Social Impact of Technology
According to a report on 18 scientific associations, __________ that we are in an age of humancaused climate change. A. all of the 18 affirm B. about half of the 18 agree C. only two of the 18 disagree D. about two thirds of the 18 affirm An: A
asked by Angela 
chemistry
a pipet can be calibrated. we expected the volume to be 25.00ml, but the actual volume was significantly less. if you had measured the density of an unknown with this pipet and assumed that v=25.00ml, your result would not be correct. would it be too high
asked by mary 
Physics
for an egg drop project, does putting straws at the bottom of an egg protect it from crashing?
asked by Anonymous 
Math
At what point of the curve y= x^4 is the normal line parallel to 2x + y = 3? Find the equation of the normal line.
asked by Laura 
Math
fred is more than 3 years more than twice the age of jane. the sum of their ages is 48. how old is each?
asked by James 
Math
It costs 3$ for an adult and 2$ for a student to attend a car show. 250$ was collected when 90 people attended how many were adults and how many were students
asked by Sophya 
English
Most of the following sentences lack at least one period, question mark, exclamation point, comma, semicolon, or colon. Add the correct punctuation where it is needed 1. No one in my family could slice it with even our sharpest knife nor were we able to
asked by Hayden 
American government
Why do you think we are not governed by the Articles today? I think we are not governed by the Articles today because it was too weak of a government to be able to force any laws that put into place. Also, states needed protection from other countries and
asked by Anonymous 
geography
New Zealand and Papua New Guinea have a. huge manufacturing industries. b. lush, tropical climates that produce many kinds of tropical fruit. c. valuable timber resources. d. very limited timber resources and poor soil.
asked by liz 
Math
(1+tan(x))* (1+cot(x))
asked by Sandra 
math
Jesse bought 10 more pencils than erasers. A pencil costs $0.15, and an eraser costs $0.22. He paid a total of $4.46. How many erasers did Jesse buy? ~I got some help and ended up here 22x+14(x+10)=446 I just don't know how to solve the rest of the problem
asked by Edgard 
Math
Simplify the follow)ing to the simplest form (tan(x) +cot(x))/ (tan(x)*cot(x))
asked by Sandra 
Physical sci
The Density of aluminum is 2.70 g/cm3. What volume does 2000 g occupy?
asked by CLaudette 
math
On a test you answered six 5point questions and eight 2point questions. You earned 92% of the possible points. How many points is the test worth?
asked by Jazmin 
Math
cos(x)/(1tan(x)) + (sin (x))* cos(x))/ sin (x)cos(x))
asked by Mary 
Physics
A cannon ball is fired horizontally from a cannon that is 40.7m above the ground. The initial velocity of the cannon ball is 234m/s. How much time does the cannon ball spend in the air?
asked by Mary 
sociology
Sociologist argue that unlike scientifice knownledge common sense conclusion are
asked by sandra kirby 
biology
what role doescarbon dioxide play in plant processes
asked by Anonymous 
Math
The sum of 23 and Hans height is 54
asked by Anonymous 
Chemistry 112
Can rate of law be a decimal??
asked by Aiyana 
English
Insert colons as needed. 1. Uncle Jerry likes the following authors Alex Haley, Mark Twain, and Willa Cather. 2. Remember these tips when you drive courtesy, caution, and judgment. 1. Uncle Jerry likes the following authors: Alex Haley, Mark Twain, and
asked by Hayden 
chemistry
Calculate ∆S universe for the process H2O (s) → H2O (l) given that ∆Hfusion = 6.02 kJ/mol and ∆S system = 22.1 J/K mol . Remember that ∆S surrounding = ∆Hsystem / T. a) 20oC b) 0oC c) 20oC
asked by Mi 
Chemistry
How many liters would 1.000g of helium gas occupy at STP?
asked by Vincent 
Math
Six groups of students sell 162balloons at the school carnival there are three students in each group if student sells the same number of balloons how many balloons does each to student sell
asked by Chloe 
Chemistry 112
Can someone please explain to me how to calculate reaction order with respect to something? I've read this in my textbook, and I watched videos on YouTube, but I still don't understand. Please help.
asked by Aiyana 
physics
A car traveling at 100 km/h strikes a tree. The front end of the car compresses and the driver comes to rest after traveling 0.85 m . What was the magnitude of the average acceleration of the driver during the collision? Express the answer in terms of
asked by david 
English
Write the correct form of the word cliche. By now, the "damsel in distress" plot is not only ______, but outdated. Answer: cliched
asked by Kimmy 
Calculus
I am having trouble with this question and I am unsure how to solve it... True or False (with justification) The function sin(x) if x ≤ 0 f(x) = 1+cos(x) if x>0 has a jump discontinuity at x = 0.
asked by Emily 
Geology
Which of the following is a mineral?
asked by Anonymous 
Algebra2
let f (x)=x3,and g(x)=x^2 find f(g)(4)
asked by steve 
English
Express how the device below and structure helps acheive the purpose of chapter 4. The book is called Narrative Of The Life Of Fredrick Douglass. I just need to write a paragraph. given: brutality of slavery device: diction and structure All i know is for
asked by Aria 
chemistry
A solution of 25.0mL of 0.10mol/L hydroiodic acid is titrated with 0.10mol/L ammonia.Determine the pH at equivalence.
asked by rana 
applied calculus
From a height of 25 meters a ball is thrown vertically upwards at a velocity of 5 meters per second. a.What time in seconds will the ball reach its maximum height? b.What is its maximum height? c.When will the ball strike the ground? d.What will be the
asked by Laura 
probability
a teacher holds 40 class cards of 14 girls and 26 boys. shes huffles the cards and drawn one. a. what is the probability that the card drawn is a girl's card? b. what is the probability that the card belongs to a boy? c. what is the probability that the
asked by dona 
physics
is the height of a ball be thrown directly related to the initial velocity? if i were to graph initial velocity as y and height as x,would it be a linear trend?
asked by Anthony 
verbal reasoning
write the word of four letters which could go after each word in this line losing winning in out be thank you if you help. if you don`t help it`s OK at least you got my question
asked by everleigh 
English
The following sentences lack necessary end marks, commas, semicolons, and colons. Insert the correct punctuation in each sentence. 1. In the final most exciting quarter of the game Brian kicked two field goals 2. That price however does not include the
asked by Hayden 
Astronomy
Neptune can complete a rotation at 18 to 20 hours. You're rania's can make one in 16 to 28 hours. What is the average time it takes Neptune to complete rotation? What is the average time it takes uranus to complete a rotation? What is the average for both
asked by Jessica 
Physics
A boy kicks a rock off a cliff with a speed of 15.5m/s at an angle of 53.5° above the horizontal. The rock hits the ground 5.37s after it was kicked. How high is the cliff? I found the height of the cliff which is 7.45*10^1 m. What is the speed of the
asked by Sarah 
verbal reasoning
unscramble this anagram to make one word with the meaning given in brackets. GREEN MEAT (holding the same opinion) thank you to all who help:D
asked by jadem 
English
Most of the following sentences lack at least one period, question mark, exclamation point, comma, semicolon, or colon. If a sentence is already correct, write C. 1. When the hurricane began to tum toward land the governor issued an evacuation order for
asked by Hayden 
Probability, Stats
For every 1000 batteries produced by a manufacturer 15 are defective. What is the probability that 100 randomly chosen batteries will have exactly 2 defective batteries?
asked by Andrew 
verbal reasoning
which letter of the alphabet makes BERT a hat? write the new word in brackets and write the letter thank you helpers:D
asked by everleigh 
math
I need help here log2^(3) + log4^(7)
asked by anonymous 
science
n a cross between homozygous redeyed "Drosophila" females and whiteeyed males,? A. All the offspring will have white eyes or B. Ditto to A.> red eyes or C The male offspring will have red eyes and female offspring white eyes. I thin the answer is B or A
asked by emma 
math
Jacky is cutting 4 yards of fabric into 7 pieces of equal length. Which expression represents the fraction of a yard each piece will be? 74 47 7/4 4/7
asked by helpme 
Physics
How much force does it take to push an 80 lb. steel cart on wheels?
asked by Patty 
Math
what is the sqaure root of 3/2*81
asked by AoPS 
English
The following sentences lack necessary end marks, commas, semicolons, and colons. Insert the correct punctuation in each sentence. 1. After you make the salad please set the table Jorge 2. What a great time we had at the beach 3. No you may not stay up
asked by Hayden 
math2
When s is measured in meters and t is measured in seconds, find the velocity at t = 2 of the following a. s = t^2 + 3t b. s = t^3  3t^2 c. s = squareroot t + 2 Help plz
asked by Annie 
Math
The sides of triangle are in ratio 5:3:4 and it's perimeter is 180m find altitude of the triangle corresponding to its largest side
asked by Vanshika 
Math
what is 2x+2=4?
asked by Anonymous 
math
a school has 720 pupils. one day 36 pupils were absent, what fraction represented those who are present?
asked by maloba 
Chemistry
The vapor pressure of pure water at 30C is 31.8Torr. What is the vapor pressure of a solution of NaCl dissolved in water when the mole fraction of NaCl is 0.111? I am wondering if this would be correct. 0.11*31.8= 3.5 Torr Is there another way to solve
asked by Christopher 
La state history
in 35 sentences describe the apportionment system for state legislative districts I cant seem to think of any please help. Ms.Sue
asked by Brah 
statistics
For a sample of 50 days, George Murnen made an average of 5.02 calls per day. At the .05 significance level, is there a difference in the mean number of calls per day between the two employees? What is the pvalue?
asked by DEBORAH SLIGH 
science
What is the balanced molecular equation for titration of oxalic acid?
asked by pooja 
calculus
I have a definition lim theta approaching 0 sin theta/theta = 1 so show if the limit x approaching 0 sin2x/5=2/5
asked by sarah 
English
Most of the following sentences lack at least one period, question mark, exclamation point, comma, semicolon, or colon. Add the correct punctuation where it is needed. I have added punctuation in second set of sentences. 1. African American author Maya
asked by Hayden 
math
the aquarium's height is 11 inches, width is 8 inches, and length is 20 inches, he wants to replace the water. how much water does the aquarium hold?
asked by Dorcas 
Math
Four subtracted from 3 times a number is 29. Find the number
asked by Sophie 
math
use the method of substitution to solve the following pairs of simultaneous equation. 2m+n=0,m+2n=3
asked by joel 
Science
Starting from rest an airplane moves with a constant acceleration of 2m/s for 30 seconds before it takes off A. How far does it travel down the runway before it takes off ? B. What's it's final velocity ?
asked by Anonymous 
english
what is the name of scrooges business partner who is dead
asked by mugh hungus 
math
The sum of ages of Sam ang thomas is 27 years. Seven years ago, Toma's was three years more than one fourth as old as Sam. Find their present ages
asked by Anonymous 
math
One leg of a right triangle is one less than twice the other. The area of the triangle is 18 square feet. What is the length of the 3rd side of the triangle? Solve by factoring. A= 1/2 (b)(h) 18= 1/2 (x)(2x1)
asked by Maddie 
Math
The third term of an A.P is 20, the fourteenth term is 64. Find the first term, the common difference and the nth term
asked by Angeles 
Mathematics
Of the 82 pupils in grade 9, 73 take mathematics 56 take science, all those who take science take mathematics. Show the information on the venn diagram. How many take neither mathematics nor science?
asked by Philip Chiwala 
Science
If a tree lost all its leaves, is it dead?
asked by Art 
calculus
Let g(x)={x^2x2 if x is not equal to 1 {0 if x=1
asked by Liv 
Math
I am stuck on the question Jeremy collected nickels for one week he is making stacks of his nickels to determine how many he has the thickness of one nickel is 1/6 inch what is the combined height of 3 nickels 2 nickels and 1 nickel help me I don't get
asked by Mirissa 
Physics
Two geological field teams are working in a remote area. A global positioning system (GPS) tracker at their base camp shows the location of the first team as 38 km away, 19deg north of west, and the second team as 28.7 km away, 35deg east of north. When
asked by Sarah 
calculus
Define h(x)={x^2 if x>=1 {ax+b if x
asked by Qin 
Algebra
Can you please help me with this math problem: 5 6 2 9 12 3 (4X Y Z) X (5X Y Z) The numbers at the top are exponents.thank you
asked by Lucille 
math
evaluate without using L'Hopital theorem the following limit lim x>0 [(sin(x)x)/(xtan(x))] the answer is 0.5 but I want to know the steps to calculate such a problem
asked by AlMadhagi 
calculus
define f(x)={x+a if x>2 {1 if x=2 {ax+b if x
asked by Angel 
English
Most of the following sentences lack at least one period, question mark, exclamation point, comma, semicolon, or colon. Add the correct punctuation where it is needed 1. I looked for my keys in the kitchen on the porch and under the bed but still couldn't
asked by Hayden 
math
evaluate without using L'Hopital theorem the following limit lim x>0 [(sin(x)x)/(xtan(x))] the answer is 0.5 but I want to know the steps to calculate such a problem
asked by AlMadhagi 
Need Help
Which is the intransitive verb? The judge who presided over that controversial case last year now seeks another term in the upcoming election "Seeks" is the intransitive verb
asked by language arts 
Maths
The length of a chord of a circle of radius 10 cm is 12 cm. Some the distance of the chord from the centre of the circle.
asked by Khushi 
Math
Find the smallest integer value of N such that f(x)=O(x^N). a) f(x) = x^7  150x^6 + 3x^3 + 111 b) f(x) = (x^3 + 2x^2) / (x^4 + x^2 + 1) c) f(x) = ⌈x⌉ d) f(x) = ⌊x⌋
asked by Winston 
Science
A battery of 3cells in series each of emf 2v and internal resistance0.5 is conected to a 2resistor in series with a par
asked by Monday Japheth, SALAMA High School, Physics 
Algebra
Can you please help with this problem: my previous post didn't come out correctly: (4X5Y6Z)2 x (5X9Y12Z)3 The number after the letter is an exponent....4X to the fifth power Thank you
asked by Lucille 
physics
Uranium 235 has 92 protons in its atoms. Calculate the number of neutrons in this atom
asked by Sakshhi Siingh 
Chemistry
Compunds formed by NH4+ and NO3
asked by Carlilah 
Algebra
Please advise if this answer is correct: 3a8^b2^c3^ (5abc9^ 11a^b4^c6^) 3a8^b2^c3^ (6ab3^c3^) 18a9^b5^c6^  is this answer correct? Thank you
asked by Lucille 
Physics
state the finctions of double wall,silver wall and cork sttoper 
asked by Busola 
des school
the volume of a cylinder 288picm3 the base radius is 8 cm find its tsa leave the answer in terms of
asked by aa 
Physics
determine the magnitude and direction of the net force acting on q0 where q0=1uC ,q1=1uC,q2=2uC and q3=4
asked by Jay 
Spanish
Hello, Can someone please help me edit the answers to my reading response questions for grammatical correctness. It would be greatly appreciated! 1. ¿Cuál es el ambiente de este cuento? Answer below: El ambiente de este cuento es de una el camino a
asked by Seth 
Math urgent homework
A book is advertised at $500 with an inclusive 5% GST. What is the original price of the book?
asked by Anonymous 
chemistry
From each pair of substances below, choose the one with the higher molar So, at 298 K a) Hg (s), Hg (l) d) C2H6 (g), C2H4 (g) b) HI (g), HCl (g) e) H2 (1 atm), H2 (2 atm), 1 mol at 298 K c) NH3 (g), Ne (g) f) NaCl(s), NaCl (aq)
asked by Jaline 
Physic
A block of mass 0.500 kg is pushed against a horizontal spring of negligible mass until the spring is compressed a distance x ( see Fig. below)The force constant ofthe spring is 450 N/rn. When it is released the block travels along a frictionless,
asked by Pongsathorn 
algebra
what is the inverse of the given relation? for the function f(x)=xx2,find (fof1)(10)
asked by zach 
Geometry
Problem: ABCDE$\ is an equilateral pentagon with side length 2 in which angle B= angle E=120 degrees. The area of ABCDE can be expressed in the form square root of x + square root of y for some integers x and y. Find x+y. I don't understand. I really need
asked by AJ 
Statistics
3 batteries are chosen at random from 15 batteries of which 5 are defective. Find the probability if: 1) none of 3 are defective 2) exactly one is defective 3) 2 defective and 1 nondefective 4) at least one is nondefective What should I do? Is it
asked by Someonehunidshelp 
Science
Suppose you are pulling a wagon with th handle at an angle.how can you make your task easier
asked by Devon 
Maths
A fighter accelerates from rest at 120,000 m/s^2 for a time of 4 seconds. How far did the jet fighter travel?
asked by Abi 
Vision
Write A Speech For The Sendforth To Your Teacher Travelling To The Usa
asked by Ghost 
Math
Garage charges one time rate of $8 plus $1.50 per half hour. What function represents total cost C(x), for parking for x hours
asked by Anonymous 
Geometry
What is the relative position of two lines if their orthogonal projection onto the projection planes are a) parallel lines b) coinciding lines c) intersecting lines
asked by Tim 
Physics
Two spheres are cut from a certain uniform rock. One has radius 3.54 cm. The mass of the other is 3 times greater. Find its radius.
asked by Student 
Geometry
Angle C and Angle D are supplementary angles. If the measure of Angle D is nine less than twice the measure of Angle C, find the measure of Angle D. PLEASE HELP!!! I have no idea where to even start!
asked by Jay 
Math
Comparison of bottles 1/3 and 2/6
asked by Chloe 
math
JOhn hs 2 apples, Many has 9 apples, how many apples are in total?
asked by Anonymous 
MathGeometry
I am having a difficulty with solving proofs, such as triangle proofs for my homework, is there any tips and tricks to be able to solve them?
asked by Ray 
Science
The surface r of a liquid depends on the density p acceleration due to gravity g nd height h use the method of dimension to derive the actual relationship between this quantities. An object is tie to the end of a string move in a circle the force exerted
asked by Mary 
Math
The difference of two consecutive numbers is 15 the greater number is X then find the smallest
asked by Kivi 
Math
Mary bought a length of ribbon. She used 2/5 of it to wrap a package and 1/5 of it for a bow. If she used 60 in. of the ribbon, what was the length of the ribbon she bought?
asked by Saba 
physics
An object is projected at an angle of elevation of 45 degree with a velocity of 100 m/s calculate its range
asked by tsering