Questions Asked on
January 1, 2016

Physics
You are on the roof of the physics building, 46 m above the ground. Your physics professor, who is 1.80 m tall, is walking alongside the building at a constant speed of 1.20 m/s. If you wish to drop an egg on your professor’s head, where should the
asked by Edge 
physics
What is the frequency of a pendulum that completes 40 cycles in 8 minutes?
asked by Tam 
Maths
The top of a building 24cm high is observed from the top and from the bottom of a vertical tree. The angles of elevation are found to be 45degree and 60degree respectively . Find the height of the tree. ( leave your answer in surd form)
asked by Faith 
Maths/physics need help agn
A hand bag containing some loads weighing 162n is carried by two student, each holding the handle of the bag next to him..if each handle is pulled 60degree to the vertical find the force of each student? Help plz
asked by Collins 
math HELP!
Calculate the linear speed of a bicycle with 26inch wheels being pedaled at a rate of 200 revolutions per minute. Express your answer in inches per minute rounded to the nearest whole number. (Hint: The diameter of the wheel is 26 inches.) I got: linear
asked by Ellie 
Maths/physics
A catapult used to hold a stone of mass 500g is extended by 20cm with applied force .f if the stone leaves with a velocity of 40m/s,what is the value of f? Help plz
asked by Collins 
English
Identify the correct sentence. a.There is a good variety of mugs in the cabinet. b.There are a good variety of mugs in the cabinet. c.A number of glasses have been broken. d.The number of broken glasses has increased.
asked by Anonymous 
Geometry
M is the midpoint of JK. find the coordinates of K. 1. J (8,4) M (1,1) 2. J (9,5) M (5, 2) 3. J (0,11) M (3,2) Please help me with this! I need help on this step by step. Thank you!
asked by Amy 
Math
Solve 2  5/x^2  x  6 = x + 3/x + 2 . Identify all nonpermissible values.
asked by Emily 
Math
Two hoses together fill a pool in 2 h. If only hose A is used, the pool fills in 3 h. How long would it take to fill the pool if only hose B were used?
asked by Patricia 
Trigonometry ??????
(The number of times a bicycle tire rotates in a given time period is directly related to the distance traveled in that time period. Consider the following scenarios.) 1. Calculate the angular speed of a bike with 26inch tires rotating at 200 revolutions
asked by Ellie 
math
Two ships leave port at 4 p.m. One is headed N38°E and is travelling at 11.5 km/h. The other is travelling at 13 km/h, with heading S47°E. How far apart are the two ships at 6 p.m.?
asked by Karen 
Math Logarithmic Question
Solve for all possible values of x within the domain of the following logarithmic expressions. a)logx+log2=log7−log3
asked by Chris 
computer programming
write a program to print fibonaaci series like 2,1,3,4,7,11,18 up to 10th term using function...end function I did it using SUB..end sub in this way : declare sub series cls call series end sub series a=2 b=1 for p =1 to 5 print a; b a=a + b b=b + a next p
asked by JILL 
Math
Tanisha potato salad recipe calls for 3 pounds of potatoes she decides to make 3.5 times her regular recipe how many pounds of potatoes should tanisha buy?
asked by Queen 
Biology
Explain the ramifications to the process of transcription if the following occurs: A) The termination sequence of a gene is removed
asked by Rose 
Social Studies (Check, Please!)
Why was the United States unprepared for Japan's attack on Pearl Harbor? A: The United States was unprepared for Japan's attack on Pearl Harbor because Hawaii was not mentioned as a possible target in the war warning that American commanders at the Pearl
asked by Victoria 
english
1. could you explain me how to use less and fewer in comparison grammatically 2. correction : he does not care for her . is it care for or care about ?
asked by r s telagathoty 
physics
A metal sphere has a charge of 6 µC. How many excess electrons are there on the sphere?
asked by Tam 
Math
Logrithmetic Problem question Last week there was an earthquake that measured as a magnitude of 3.2 on the Richter scale. Today you hear on the radio that there was a second earthquake that was 27 times more intense than the first. What was the magnitude
asked by Chris 
Math
A caterer prepares four times as many pizzas as she usually prepares for a large party. The caterer usually prepares 5 pizzas. The caterer also estimates that each party guest will eat 1/4 of a pizza. Can someone tell me the problenm that this would be?
asked by Ash 
math lit, lo, life sciences, xitsonga ,agriculture
im doing this subjects which career I cn follow..?
asked by Rosemary ngumede 
Physics
A soccer ball is kicked with 26.5n and accelerates at 6.5 m/s 2 to the right. What is the mass of the ball?
asked by Tori 
Math
For each function, i) determine the corresponding reciprocal function, y =1/f(x) ii) state the nonpermissible values of x and the equation(s) of the vertical asymptote(s) of the reciprocal function iii) determine the xintercepts and the yintercept of
asked by Patricia 
Math
How old is Robert,if Marin is 9 years older than him and their ages make 21?
asked by Jade 
Math
Hi, I need help on this problem:Solve the system of equation by giving an ordered pair for 14x +3y = 115 7x +3y = 80 Use the 3 Methods in your work. Thank You, I am not sure how to use graphing, substitution, and elimination, please show these methods.
asked by Kaashif 
Social Studies (Check, Please!)
1. After Roosevelt made the destroyersforbases deal with Britian, some Americans called him a dictator. Do you think Roosevelt was right or wrong in his actions? A: I think Roosevelt was right in his actions because he was only defending his country and
asked by Victoria 
Algebra
Solve the system by graphing. x+y=−2 y=13x+2 Thanks jiskha,com :)
asked by Norman 
Number Systems of Mathematics
Solve using elimination and express answer as ordered pair: 2x + 3y = 7 x + 5y = 7
asked by James 
Math
Solve the system using elimination. Express as ordered pair. 2x  7y = 27 3x = 2y = 3
asked by Harriett 
Math
Solve the system by graphing. x+y=−2 y=13x+2 A. (6, 4); The image is of a 2dimensional graph with an xaxis and a yaxis. One line is drawn passing through coordinates (3,1) and (3,3). Another line is drawn from coordinate (2,4) to (6,4). B. (−3,
asked by Mary Alise 
Website Question
Will the website be supporting pictures soon? like take a pic of your problem then upload it to the website then someone will try and solve it?
asked by Emily 
Math
Rewrite the following exponential functions as logarithmic functions, and the logarithmic functions as exponential functions: f(x)=(7/8)^x b) f(x)=log12x c) f(x)=log5/9x
asked by Matt 
math
2x3x5x8x11= with a 2 on top of 2 and a 4 on top of 5 and 2 on top of 11 is this a factorization a prime factorization
asked by christopher 
Algebra
Find the value of x so that the line passes through the points (2,3) and (x,9) and has a slope of 3/2.
asked by Kimmy 
math fractions and decimals
which is more 0.85 or 7/9
asked by megan 
fractions
38/53 in the simplest form
asked by ava 
physcis
What's the answer for 2pi spuareroot 80cm divided by 10meter per squared second
asked by mhmmm 
math
the length is 139,435ft a runner's step is 3ft does the number of steps the runner takes fit evenly into the length of the race.
asked by mike 
Algebra
Question: The slope that passes through the points (2,3) and (8,3) is ______ . 1)positive 2)negative 3)zero 4)undefined I believe the answer is: zero. How do I justify this?
asked by Gregg 
Math
a)Write a function o represent the area of the rectangle. one side  5x+15 other side  312x b) Graph the function lebel x and yint c)what dp the xintercepts represent in this situaltion? d)Does the funtion have a maximum value in this situaltion? Does
asked by Emmanuel 
Math
Solve 3  x = √x2  5 . State any extraneous roots that you found. Identify the values of x for which the radical is defined.
asked by Emmanuel 
maths
how many bricks each of length 25 cm , and 12 cm , would be required to field a courtyard of 30 m long and 20 m wide?
asked by shivanshu 
Chemistry
What is the chemical formula and name for: Na+1 and Na3?
asked by Anonymous 
Calculus need help
Dy/dx=x+x^3/y plz show your work
asked by Collins 
math
How many different ways (combinations) can i arrange the 6 letters: A, B, C, D, E and F without repeating any of them.
asked by Anonymous 
chemistry
an ionic bond will most likely form between elements from group_ a/2and3 , b/2and6 , c/3and4 , d/4and5 ,e/5and6
asked by barbie 
s s hr sec school
find the principal that yield a compoun interest of Rs.1632 in 2 years at 4% rate of interest per annum.
asked by Anonymous 
Physics
is electric field intensity the same as potential difference?
asked by Anonymous 
math
If one angel of a parallelogram is twice of its adjacent angel,find the angel of the parallelogram
asked by srishti 
MATHS HELP URGENT(TIME AND WORK)
A can do a piece of work in 12 days whereas B can destroy the work in 3 days. A does the work for 10 days and then B destroys the work up to 2 days. In how many days will the work be finished?
asked by JACK 
Maths
Find the values of A. B and C if the expression Ax(x2)(x+3)+Bx(x2)+Cx(x+3)+(x2)(x+3) has a constant value for all values of x
asked by Henry1 
biology
what are the main similarties and differences between the three main food groups,carbohydrate,proteins and fats?
asked by jacob 
English Grammar
underline the subject and object in 'He was laughed at by all his friends.'
asked by Anamika 
mechanics
A constant force of 40N is applied tangentally to the rim of a wheel with 20cm radius. The wheel has a moment of inertia 30kg.m2. Find (a)angular acceleration (b)angular speed after 4seconds from rest (c)the number of revolutions made in that 4 seconds
asked by incredible 
Reposting calculus help plz
Dy/dx=(X+x^3)/y help show working
asked by Collins 
English
United Nations, 310, 314, 362 Charter of, 311 Declaration of, 309 United States, 225, 238, 275, 289 In Big Four, 322, 3257 In League of Nations, 299 LendLease policy of, 307 Neutrality of, 305 As United Nations sponsor, 313 Universal Declaration of Human
asked by Tessy 
science
why tne unit of pd and emf is same
asked by diwas 
English
Hibernation One of the mysteries in the world of nature is hibernation. By what process, with the coming of autumn, do some animals go into the deep sleep that sees them through the unfavorable environment of winter? The question has baffled mankind for
asked by Tessy 
chemistry
A 90walt emersion heater is used to supply energy for 5min. The energy supplied is used to completely melt 160g of a solid at it's melting point.calculate the S.L.H of fusion of the solid.
asked by abdullahi yusuf 
quantum optics
You are doing a Ramsey experiment as described in the lecture: You prepare a beam of atoms in a state 1⟩, you do a π/2 pulse with a Rabi frequency of Ω0=(2π)⋅500 Hz and a detuning of δ=(2π)⋅3 Hz to the 1⟩→2⟩ transition. Then there is a
asked by Abd 
science
what is the boiling point of 3.77m sucrose
asked by vyankatesh kshatriya 
Math
The fencing of square garden is 20 m in length.how long is one side of garden?
asked by Raghul 
Math
Exponetial Functions In the following exponential relations, solve for x using logarithms. Round your answers to 4 decimal places. a) 5^3x=65 b) 2^2x+3=80
asked by Chris 
Math
Im trying to find out what the value of this equation is: x^37+ x^31 + x^47+ x^26+ x^63+ x^9 + 6. By using the fact that (x + 1/x) ^2 = 3
asked by Nerd Girl 
mechanics
please help solve these questions (1a). The gravitational field strength g on the earth’s surface is 9.8N/kg. explain what this means.(b) Using the law of gravity, show that gr2= k. Where g=gravitational field strength at a distance r from the center of
asked by incredible 
physics
Which of the following is correct for the reflected ray if a light ray strikes a plane mirror at an angle of 50° from the normal?
asked by Tam 
Algebra
Job A pays Edith $4 an hour. Job B pays her $8 an hour. She will work both jobs. She is able to work no more than 15 hours a week. She wants to earn at least $80 a week, working a combination of both jobs. Write a system of inequalities that can use used
asked by Zero 
math
what is 6/5 x 25/3
asked by Evelyn 
math
If 1 gallon of water weighs 8 1/3 lb. how much does 1 1/5 gallons weigh?
asked by Evelyn 
math
5x+3=7
asked by angel 
Science
Why Is it important to include units with your temperature measurements
asked by Anthonae 
calculus
Determine if the Mean Value Theorem for Integrals applies to the function f(x) = x^3 − 9x on the interval [−1, 1]. If so, find the xcoordinates of the point(s) guaranteed to exist by the theorem. Not quite sure how to do this one at all to be
asked by Jason