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A Sky-diver(falling vertically)starts from rest at time t=0.His acceleration is non-uniform until be reaches a steady speed of
1. 1 answer
2. 563 views
Three-fourths of the class were girls.Two-thirds of the girls have dark hair. What fractions of the class is female and dark
1. 2 answers
2. 1,395 views
The temperature has been going down at a constant rate. In 8 hours it went down 16 degrees. Which expression best shows the
1. 2 answers
2. 812 views
using a scale of 1:250 draw an accurate plan of a rectangular garden measuring 25m x 15m.
1. 5 answers
2. 2,212 views
A man with brown eyes and dark hairs (whose father was blue eyed),marries a woman with blue eyes and blue curly hairs (whose
1. 1 answer
2. 1,025 views
Kim bought a total of 48 cookies. Each cookie costs $.55, including tax. Of the cookies she bought, 3/8 were lemon cookies. What
1. 1 answer
2. 601 views
calculate the weight in grams far a given solution of sodium thiosulphate crystals of strength 2.0M
1. 3 answers
2. 431 views
what mass of zinc will be required to react completely with 100cm3 of a 1.0M hcl.
1. 2 answers
2. 1,319 views
the elevation of a tower from a point on the ground is 30 at a point on the horizontal line passing through the foot of the
1. 1 answer
2. 628 views
Fuel wood logs sawed 53 times and 72 pieces made. If the cutter saw only one at a time how many there were before cutting?
1. 3 answers
2. 554 views
How do you respond to these malay questions?Siapakah kawan baik anda di sekolah? Adakah kamu suka akan matapelajaran
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2. 515 views
is that electric current occupies space?
1. 0 answers
2. 382 views
Suppose that ψ1 and ψ2 satisfy the time independent Schrödinger equation for some potential. Which of the following
1. 2 answers
2. 884 views
Suppose a particle has wavefunction ψ(x,t=0)=Aexp(−x22l2). What is the average value (expectation value) of p^, ⟨p^⟩, for
1. 0 answers
2. 537 views
The variance σ2X=⟨(X^−⟨X^⟩)2⟩ of an operator, X^, is a measure of how large a range its possible values are spread
1. 0 answers
2. 640 views
What is the probability current density of a particle with wavefunction ψ(x,t)=exp(iℏ(px−Et))?
1. 0 answers
2. 415 views
Suppose we have a particle in 1-dimension, with wavefunction Ae−|x|2d. What is the probability to find the particle in the
1. 0 answers
2. 466 views
The ground state wavefunction for a particle in a shallow potential well in 1 dimension is of the form: Ae−|x|2d. Given that
1. 0 answers
2. 511 views
Recall how the Schrödinger equation was motivated by the non-relativistic dispersion relation E=p22m. If we follow the same
1. 1 answer
2. 718 views
We are standing at a distance d=15 m away from a house. The house wall is h=6 m high and the roof has an inclination angle β=30
1. 0 answers
2. 471 views
please help me with these defintions of math terms please:a number that can be expressed as the product of 3 equal factors? a
1. 1 answer
2. 526 views
a number that can be expressed as the product of 3 equal factors?a number that can be expressed as the product of 2 equal
1. 1 answer
2. 443 views
walkie talkie phone company charges $18.00 for basic phone service per month and $0.15 per minute for long distance calls. Arena
1. 2 answers
2. 1,357 views
there are 36 carpenters in a crew. on a certain day, 29 were present. what percent showed up for work?
1. 3 answers
2. 2,447 views
find the radius and height of a cylindrical soda can with a volume of 21in^3 that minimize the surface area.
1. 1 answer
2. 1,145 views
what is the smallest perimeter possible for a rectangle whose area is 1000in^2 and what are its dimensions?
1. 1 answer
2. 515 views
verify that the function satisfies the hypotheses of the mean values theorem on the given interval. then find all numbers c in
1. 1 answer
2. 674 views
why did john choose the room in the yellow wallpaper?
1. 3 answers
2. 814 views
THE Perimeter of a triangle is 2004.One Side of a triangle = 21 Times the other. the shortest side is integral length. SOLVE For
1. 1 answer
2. 1,243 views
A rectangle is inscribed with its base on the x-axis and its upper corners on the parabola y = 8−x2. What are the dimensions
1. 1 answer
2. 469 views
Find the point on the line 2 x + 6 y + 2 = 0 which is closest to the point ( 2, 0 ).
1. 0 answers
2. 441 views
A fence 5 feet tall runs parallel to a tall building at a distance of 3 feet from the building. What is the length of the
1. 1 answer
2. 4,590 views
A fence 5 feet tall runs parallel to a tall building at a distance of 3 feet from the building. What is the length of the
1. 0 answers
2. 608 views
Virtue ethics regards which of these as virtues? (Points : 1)power envy temperance inconsistency
1. 2 answers
2. 470 views
the number has 7 digits it is evenly divided by 00 the value of one of the digits is 60,000 the digit in the hundredth place is
1. 3 answers
2. 681 views
tickets to a school play cost 1.5 in advance and 2.0 at gate. by selling all 200 tickets students got $360. how many tickets did
1. 1 answer
2. 1,077 views
A 1.5 m tall man stands 2 m in front of a flat wall mirror. Please find: image distance and height of imageI have the formulas
1. 1 answer
2. 1,300 views
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
1. 1 answer
2. 785 views
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
1. 0 answers
2. 633 views
A power line carries a current of 110 A at a location where the Earth's magnetic field has a magnitude of 0.37 Gauss (0.37·10-4
1. 1 answer
2. 918 views
could u please give answers for exam 40553400. i,m not sure about my answers
1. 2 answers
2. 504 views
today ur going to talk about vitamin c with ur class . from which food group you willl choose ur snack?
1. 1 answer
2. 431 views
in preparing budget for a day care center, you must plan for taxes.as an amployer you must pay part of employees which tax
1. 1 answer
2. 850 views
Four light bulbs (A, B, C, D) are connected together in a circuit of unknown arrangement. When each bulb is removed one at a
1. 1 answer
2. 932 views
A point charge of -8.4 µC is at the origin.a)What is the electric potential due to this charge at (x,y) = (3.5 m, 0 m) b) What
1. 0 answers
2. 779 views
Paul has grades of 73 and 86 on his first two tests. What must he score on his third test in order to have an average of at
1. 4 answers
2. 2,462 views
Given two spheres, if the volume of the first sphere is 36r, and the volume of the second sphere is 288r, what is the relation
1. 1 answer
2. 553 views
which expression is equal to 6(9+2)?
1. 1 answer
2. 406 views
write the place name for the 4 in the following number 3 624 786
1. 1 answer
2. 404 views
round the following number to the nearest ten: 53
1. 2 answers
2. 481 views
Let's say I put a very hot 100o C, 41 g cube of aluminum in 71 ml water at room temperature (20o C). What is the temperature of
1. 1 answer
2. 478 views
what is the vertex and directrix of the parabola y=-1/2x^2 + 10 - 46
1. 1 answer
2. 399 views
find the value of pi in the following:sin pi=cos(pi + 40) sin(80 - pi)=cos pi
1. 1 answer
2. 394 views
if you are printing an essay on the comuter....can the essay be double line space?
1. 3 answers
2. 432 views
. Investigate the values of  and  such that the system of equationsx + y + z = 6 x + 2y + 3z = 10 x + 2y + z = , may
1. 1 answer
2. 593 views
i got my data task and i need to now is there a link between the height of the slope and the average speed of the object?
1. 1 answer
2. 316 views
a dailly farmer produce 50 tons of rice in the first day, 57 tons in the second day, and 64 tons in the third day. the
1. 1 answer
2. 600 views
a man saved a sum of 200 dinars in the first month, 250 in the second month, 300 in the third month and he continue to save at
1. 1 answer
2. 487 views
the first term of an arthmetic progression is 1 and its last term is 28, find the sum of the progression if their number is 10
1. 1 answer
2. 519 views
find the sum of arthmetic progression 12,15,18,,,,,, 84,a=12 d=3 n=?
1. 2 answers
2. 393 views
Week 2: Online Presentation: “Tutorials & Guides-1” - Due Date: Day 3 [post to the Main forum]This week you will chose a
1. 1 answer
2. 580 views
USE THE GIVEN SET OF POINTS TO PROVE EACH CONGRUENCE STATEMENTE(-3, 3), F(-1, 3), G(-2, 0), J(0, -1), K(2,-1), L(1, 2);<EFG=<JKL
1. 2 answers
2. 749 views
1. if y=mx+1, -mx+y=1, 3x+4y=9 find out the value of m.2. sum of 2 digits is 9. the digit obtained by7 increasing digit in ten's
1. 1 answer
2. 416 views
3 1/2- = - p 3 p=? (type the whole number or a simplified fraction)
1. 1 answer
2. 417 views
24/2=108/nn=? solve for n
1. 1 answer
2. 392 views
write the ratio in simplist form4000 miles to 500miles
1. 1 answer
2. 485 views
the question is what % of the offspring will be round ? anf the letters are (Rr x rr) and then a square
1. 1 answer
2. 552 views
Suppose you inherit $10,000 and decide to use the money to start a lawn-care business. You purchase a truck and a mower for
1. 1 answer
2. 687 views
can you help me with this questionfor example , i work for one retail company, so i need explain and justify in selecting the
1. 0 answers
2. 607 views
Consider the following data about the goods market in a hypothetical closed economy. Assume that government expenditure is
1. 0 answers
2. 626 views
Consider the following data about the goods market in a hypothetical closed economy. Assume that government expenditure is
1. 0 answers
2. 698 views
for the problem asking to integrate (x^2 - 5x+ 14 )/(x-1) * (x^2+9) I solved getting the answer ln(x-1)-5/3tan^-1(x/3)however
1. 0 answers
2. 419 views
integral of x^3+65/X^+7x+12 dxwhen i solved i got x^2/2-7x+64ln(x+4)-111ln(x+3)+c however this isn't the right answer....what
1. 1 answer
2. 347 views
Our professor gave us a exercise to do for fun where he said to derive profit=PQ(P,A)-C(Q(A))-A (note Q is a function of A both
1. 1 answer
2. 573 views
the question asks to integrate cos(t)/ (5sin(t)+8)^2 the answer i got was xcos(t)/(5sin(t)+8)^2 this is not right i believe
1. 1 answer
2. 520 views
My professor asked to take the derivative of profit for fun so I just wanted to check if my answer was right.profit=PQ(p,a)-c(q(
1. 2 answers
2. 498 views
the question asks to integrate cos(t)/(5sin(t)+8)^2 the answer i got wasxcos(t)/(5sin(t)+8)^2 i think the x is wrong but i am
1. 0 answers
2. 604 views
cos(t)/(5sin(t)+8)^2the answer i got was: xcos(t)/(5sin(t)+8)^2 this is not right when i put it in what did i do wrong?
1. 5 answers
2. 571 views
Find the volume of the solid formed by rotating the region enclosed byy=e^4x+3 y=0 x=0 x=0.7 this is my work V = ∫ e^4x dx
1. 3 answers
2. 2,087 views
solve by substitution, 9x+2y=-64
1. 1 answer
2. 446 views
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis.y=1/x^2 y=0
1. 1 answer
2. 486 views
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis.y=1/x^2 y=0
1. 1 answer
2. 518 views
find the indicated outputs for f(x)= 4x^2- 5x= f(0)=f(-1)= f(2)=
1. 1 answer
2. 929 views
find the indicated outputs for f(x)= 4x-5x= f(0)=f(-1)= f(2)=
1. 1 answer
2. 375 views
Find the slope- intercept equation of the line that has given characteristics slope 7.7 and y-intercept ( 0,-5). The
1. 1 answer
2. 859 views
find the slope and the y-intecept f(x)= -9x-7. The slope is_______ and the y-intecept is (0, ___) I came up with the slope is 2
1. 1 answer
2. 495 views
In 1990, the life expectancy of males in a certain country was 66.3 years. In 1997, it was 70.0 years. Let E represent the life
1. 1 answer
2. 595 views
find the slope, if it exists of the line containing the pair of points. (-19.3, 13.4) and (-17.3, 2.1) The slope m= I came up
1. 1 answer
2. 1,134 views
1) during last year a company went through $800,000 worth of net loss. yet its cash increased 300,000 during the same period of
1. 1 answer
2. 448 views
y=-10x+5 m= what. I came up with 5 am I close
1. 2 answers
2. 388 views
1.how do I find the product of 500 and 3.2.How do I evaluate the expression of thi variable... abc, when a = 4 b = 20 c= 50
1. 5 answers
2. 1,592 views
integral from 1 to 0 dx/x^1/2i am unsure on how to even start would the limit still go to infintiy?
1. 1 answer
2. 422 views
how this knowledge and these abilities can impact your career success.
1. 1 answer
2. 380 views
explain how you selected organization contribute towards professional knowledge and abilities?
1. 2 answers
2. 655 views
y=x^2e^x I am suppose to find the dy/dx of this the way i did it was x^2e^x times dy/dx of x^2 and got x^2e^x times 3x^2 this is
1. 1 answer
2. 471 views
If i were to do a simple supply and demand curve for subprime mortagages I know I would do the supply as increasing but what
1. 1 answer
2. 549 views
I was wondering if someone had to do a supply and demand curve for the subprime mortgages would they just show how the supply of
1. 3 answers
2. 510 views
Consider the function f(t)=2sec^2(t)–10t^3. Let F(t) be the antiderivative of f(t) with F(0)=0.Then F(2) my problem is i get
1. 1 answer
2. 518 views
Consider the function f(x)=10sqrrootx+5 on the interval [3,10].i found the average slope to be 2.043181217 By the Mean Value
1. 1 answer
2. 554 views
f(x)= 5x^2+8x+7/x^1/2i have to find the derivative and when I do this is what i get.... (x^.5)(10x+8)-(5x^2+8x+7)(-.5x^-3/2)/(x)
1. 0 answers
2. 430 views

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