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Sarah
Questions and answers by visitors named
Sarah
Questions (3,095)
A track star in the long jump goes into the jump at 12 m/s and launches herself at 20.0° above the horizontal. How long is she
7 answers
asked by
Sarah
22,634 views
Please help solve this,
A farmer has 600m of fence and wants to enclose a rectangular field beside a river. Determine the
5 answers
9,351 views
A friend plays an A note (440 Hz) on her piccolo while running towards you at 40 m/s. What frequency do you hear just before she
4 answers
1,123 views
I need help with this please!
In 2014, the water source in Flint, MI was changed from treated Detroit water to water from the
4 answers
961 views
What happens to the man who carries an ax in his teeth?
7 answers
5,231 views
Nucleophile or electrophile?
(1) CH3COOH (2) CH3COO- At first, I thought that they were both Nucleophiles, but now Ive confused
5 answers
5,918 views
Find constants a,b and c such that the graph of f(x)=x^3+ax^2+bx+c will increase to the point (-3,18), decrease to the point
6 answers
asked by
Sarah
5,088 views
A group of teachers and pupils attended a concert. The teachers paid $1200 altogether and the pupils paid $640 altogether for
6 answers
3,685 views
Kyle's Functions
Mr. Hawkins gave Kyle two quadratic functions to compare. Function 1 f(x) = -(x-1)^2+9 Function 2 (Its a Table)
4 answers
1,072 views
11. How many moles of CO2 would be produced from 56 moles of O2 according to the following balanced equation?
2 C2H6 + 7 O2 --->
7 answers
5,430 views
1. The artwork pictured here best represents which message?
a) Ideas and creativity can be shown with many different tools. b) It
42 answers
asked by
Sarah
16,925 views
If y=tanu, u=v-(1/v), and v=lnx. What is the value of dy/dx at x=e?
5 answers
asked by
Sarah
7,066 views
A chemical reaction proceeds in such a way that after the first second, the amount of a
certain chemical involved in the reaction
4 answers
2,564 views
4. At high temperatures, nitrogen dioxide, NO2, decomposes into NO and O2. If y(t) is the concentration of NO2 (in moles per
4 answers
2,726 views
Consider a weak acid HX. If a 0.10 M solution of HX has a pH of 5.87 at 25°C, what is ΔG° for the acid's dissociation
5 answers
2,441 views
Suppose the moon rotated on its axis just as quickly as Earth. Would you still always see the same side of the moon from Earth?
*
29 answers
15,564 views
a 1.5kg cannon is mounted on top of a 2.0kg cart and loaded with a 52.7 gram ball. The cannon, car, and ball are moving forward
4 answers
4,635 views
You are standing at the peak of a mountain that is 14000 feet above sea level. The angle of depression from this peak to a
5 answers
1,952 views
an airplane travels 500 km with the wind in the same time that it takes the airplane to travel 400 km against the wind. the
6 answers
3,029 views
The altitude of a kite is graphed here (the y-axis is in increments of 10 feet; the t-axis is in minutes). Over which intervals
5 answers
asked by
Sarah
2,568 views
A closed tin of milk has diameter 10cm and height 16cm find the total surface area of the tin( take pie to be 22/7
7 answers
2,008 views
Given that 3cos2x + 17sinx = 8, find the exact value of sinx .
5 answers
809 views
Commercial vinegar was titrated with NaOH solution to determine the content of acetic acid, HC2H3O2. For 20.0 milliliters of the
4 answers
8,382 views
1). Kelly purchased ten shares of Gentech stock for $200 in year 1 and sold all the shares in year 2 for $220 a share. Between
6 answers
asked by
Sarah
4,354 views
A bowling ball weighing 71.2 N is attached to the ceiling by a 3.80 m rope. The ball is pulled to one side and released; it then
10 answers
9,399 views
"This will not be endured!" he roared. a:correct b:incorrect ---- My answer is "a" Is this correct?
5 answers
1,740 views
A Ferris wheel has a radius of 35m and starts at 2m above the ground. It rotates once every 53 second.
a) determine the cosine
4 answers
2,200 views
A brick patio has the approximate shape of a trapezoid. The patio has 16 rows of bricks. The first row has a = 13 bricks and the
4 answers
4,541 views
A snooker ball with a mass of 0.3kg moving at 2.5m/s collides with another ball of 0.2kg mass and moving in the same direction
5 answers
1,554 views
An escalator carries 60 people of average mass 70 kg to a height of 5m in one minute.Find the power needed to do this.
6 answers
4,169 views
Given that g(t) is continuous, find the value of c: g(t) = {ct + 2 if t < - 2; cos(pit/2) if t >= -2.
a. c = 3/2 b. c = 1/2 c. c
7 answers
2,292 views
A credit union pays 8% per annum compound interest on all fixed deposits . A customer deposited $24000 in an account . Calculate
5 answers
2,192 views
A positive charge of 3.0e-6 C is pulled on by two negative charges. One, -1.9e-6 C, is 0.045 m to the north and the other,
4 answers
1,953 views
Find the dimensions and area of the largest rectangle that can be inscribed in a right triangle whose sides are 9cm, 12cm, 15cm.
5 answers
1,301 views
A piece of lead with a mass of 27.3 g was heated to 98.90oC and then dropped into 15,0 g of water at 22.50oC. The final
5 answers
2,430 views
A potter’s wheel with rotational inertia of 45 kg m2, is spinning freely at 40 rpm. The potter drops a lump of clay onto the
5 answers
10,122 views
Write an equation for:
One taxi company charges $1.50 for the first 2 miles of any trip,and then $1.20 for each mile after that.
3 answers
768 views
How can you use the sticky tape activity to find if an object has excess charge that can be transmitted to the computer and ruin
5 answers
1,251 views
1) On a horizontal straight line graph of distance (vertical axis) against time, which variable is not changing?
a) Distance b)
6 answers
2,301 views
The reaction of aqueous sodium bromide and aqueous lead(II) nitrate is represented by the balanced net ionic equation.
2Br-(aq) +
3 answers
3,868 views
What colors would you expect to see in a flame for the following compounds: potassium chloride, potassium nitrate, and potassium
5 answers
1,952 views
A ferris wheel rotates at an angular velocity of .036 rad/s. At t=0min your friend Seth is at the very top of the ride. What is
5 answers
3,089 views
an investment of 72,000 was made by a business club. the investment was split into three parts and lasted for one year. the
4 answers
4,149 views
According to the authorities; only 35% of the criminals go to jail. a:use a period after "authorities" b:use a comma after
5 answers
2,544 views
Consider the following balanced equation.
2 H2 + O2 ---> 2 H2O Which of the following statements is false? a) One molecule of O2
5 answers
4,316 views
What is the wavelength in Angstroms of radiation that has a frequency of 4.00 x 10^14 s-1?
I tried the equation wavelength=
4 answers
2,438 views
A cardiologist uses an ultrasound scanner with an operating frequency of 3.5 MHz that can detect Doppler frequency shifts as
4 answers
975 views
Given f(x)=x^4(2x^2-15). On what interval(s) is the graph of f concave upwards?
A. (0, sqrt(3)) B. (-sqrt(3), 0) C. (-sqrt(3), 0)
2 answers
812 views
A number cube is rolled 160 times. The number 2 comes up 39 times. what is the experimental probability of rolling a 2? What is
21 answers
5,402 views
A grasshopper leaps into the air from the edge of a cliff at a 50 degree angle. He reaches a maximum height 6.74 cm above the
7 answers
19,846 views
1.In a pith ball experiment, the two pith balls are at rest. The magnitude of the tension in each string is |T| = 0.55 N, and
4 answers
1,180 views
Choose the meaning of the bolded vocabulary word in each passage in the next six questions.
I can't bold them so the word will be
5 answers
8,102 views
When 0.010 moles of Zn(s) reacts with 30.0 mL of 1.0 M HCl, the H2 gas produced is collected in a 1.0 L flask at a temperature
4 answers
750 views
A 10.0 kg box is placed on a ramp that is inclined at 30.0 degrees to the horizontal.
Determine the force of friction required to
3 answers
1,580 views
I'm having trouble doing trigonometry.
Determine the possible coordinates of a terminal point for each angle in standard
5 answers
1,074 views
"The planets Uranus and Neptune are so far from the Sun that temperatures are low enough for atmospheric methane, CH4, to
6 answers
2,294 views
Consider the curve given by x^ 2 +sin(xy)+3y^ 2 =C, where Cis a constant. The point (1, 1) lies on this curve. Use the tangent
4 answers
2,799 views
A thin uniform rod has a length of 0.550 m and is rotating in a circle on a frictionless table. The axis of rotation is
5 answers
4,148 views
Julia measures water with a 1/4 cup measuring cup. She fills the cup 7 times and pours 1/4 of a cup pf water into a bowl. How
5 answers
937 views
((2X-14Cos45)/(49+X^2-14XCos45))+0.3536 = 0
Solve to find the value of X Change cos 45 to sqrt 2 and rewrite the equation in the
1 answer
871 views
Ok I had 2 eng. questions, what makes a piece of writing literature, and the second was who decides what is literary or not? I
1 answer
1,099 views
What does the brain teaser I a SWAA mean? Thanks.
http://www.swaainternational.org/ (Society for Women and AIDS in Africe)
6 answers
1,493 views
I can't figure out the correct answer for this, please help.
The drosophila embryo goes through a series of mitotic divisions
2 answers
1,364 views
Enhancers and promoters are ______. In contrast, the heterodimer "TFIIA and TFIIB" are examples of __________.
a. trans-acting
1 answer
503 views
For membrane-associated proteins, the consensus sequence _______ is found on the inchoate (new) polypeptide and ______ to halt.
a
1 answer
489 views
The number _____ and _____ sign are assigned to the first nucleotide of a transcriptional unit.
a. 0, positive b. 1, negative c.
1 answer
1,050 views
a) I can't find anything about the Electoral college being described in the Constitution? (My teacher said there are two parts)
I
1 answer
943 views
A mass is dropped from a height of 30m, and at the same time from ground level (and directly beneath the dropped mass), and
1 answer
486 views
A mass is dropped from a height of 30m, and at the same time from ground level (and directly beneath the dropped mass), and
1 answer
483 views
Consider a car making a turn at a constant speed
a) is the net force on the car zero? Why? b) Is the velocity of the car
1 answer
640 views
Help Me!!! I need it for Tuesday!!! Why is care necessary in the handling and storage of frozen foods???
These sites explain the
1 answer
1,245 views
A particle had a speed of 18m/s at a certain time and 2.4 s laer its speed was 30 m/s in the opposite direction. What were the
1 answer
919 views
An electron had a constant acceleration of +3.2m/s^2. At a certain instant its velocity is +9.6m/s. What is its velocity at
3 answers
972 views
Suppose a rocket ship in deep space moves with constant acceleration equal to 9.8m/s^2., which gives the illusion of normal
1 answer
864 views
Hi guys, could you please help me with this question;
What reason would firms wish to have knowledge in regards to the income
1 answer
513 views
please describle and compare the three basic ways in which software designers enable users to enter commands into computers
I use
1 answer
380 views
how does five degrees east of north keep a plain going north when the wind pushes the plain four point six degrees west of
1 answer
496 views
I need to type an esay on my favorite athelete unfoetunately I don't have a favorite athelete can you show me famous atheletes
Wh
1 answer
969 views
Hiya, I need some help for a poetry essay I have to write. Can you tell me what the line "darkness beneath nights darkness had
3 answers
641 views
Here's my essay, could you please tell me what you think of it and suggest some improvements?
Poetry Essay Chinua Achebe and Ted
3 answers
583 views
Hey writeacher, you asked me to repost my corrections. I have corrected from where you left off and I THINK I have most of the
0 answers
504 views
How would I work out this question...?
A car costs 1,150 after it was reduced by 15%. What was the original cost? :S If x is the
1 answer
551 views
Hiya, writeacher are you online? I don't know if you remember me from last night but you we're helping me proof read my essay.
1 answer
561 views
Two sides of a triangle are 15 and 20 feet in length. How fast is the third side increasing if the angle between the given sides
1 answer
568 views
Water flows at a rate of 2 cu. ft. per minute into a vessel in the form of an inverted right circular cone of altitude 2 ft. and
1 answer
591 views
Water runs into a conical tank with radius 5 and altitude 10 at a constant rate of 2 cu.ft. per min. How fast is the water
1 answer
518 views
A balloon is composed of a right circular cone joined at its base to a hemisphere. The diameter of the base is equal to the
1 answer
470 views
what unit of measurement is used for font size?
what is the difference between 'serif' font and 'sans serif' font? Name 6
3 answers
979 views
Help unscamble these letters pacres
SPACER SCRAPE Parsec
1 answer
475 views
I have to write an independant essay about an important event in the 60s.
We have to find our own research but are allowed to
1 answer
499 views
We have to do a presentation about the 60s and choose the most significant event. Our teacher said we may interview experts or
10 answers
644 views
Can you use TLC to distinguish various isomers from one another? In what kind of substance can you NOT distinguish the isomers
1 answer
516 views
Do conductors always need to conduct precise rhythmic patterns to keep musicians together?
I do not think so. Is this correct. :)
1 answer
442 views
Hiya, I had to write an essay about the most important event in the 60s.
Here is my essay: The Space Race On the 20th July 1969,
1 answer
452 views
Here's my essay, about the most important event in the 60s. It's for history. Could you let me know if there's any gramatical
6 answers
656 views
What year did the miscegenation law end (abolish) I know that one state abolished it in 2000 but which one
Loving vs Virginia
1 answer
456 views
Hi, I am currently taking AP US History and we I have never been a history buff so I am illiterate when it comes to any type of
1 answer
732 views
During the Reformation period, did political concerns primarily serve religious needs, or was religious ideology primarily an
1 answer
462 views
The market for fertilizer is perfectly competitive. Firms in the market are producing output, but they are currently making
3 answers
1,773 views
what is the silver bullet? How does it realate to us?
Thank you for using the Jiskha Homework Help Forum. HOWEVER we could
1 answer
549 views
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