Questions and answers by

Lydia

Questions (148)

Who is the richest person in Paraguay? Thanks!
1. 1 answer
2. 1,290 views
The siren of a police car produces a sound of frequency 420Hz.A man sitting next to the road notices that the pitch of the sound
1. 1 answer
2. 1,016 views
True or false the work done by a non-zero net force on an object, moving on a horizontal plane, is equal to the change in the
1. 1 answer
2. 466 views
True or false the work done by a non-zero net force on an object, moving on a horizontal plane, is equal to the change in the
1. 0 answers
2. 539 views
What do you call the phenomenon that causes dispersion of white light when it passes through a triangular prism
1. 1 answer
2. 466 views
What do you call the phenomenon that causes dispersion of white light when it passes through a triangular prism
1. 2 answers
2. 393 views
What do you call the phenomenon that causes dispersion of white light when it passes through a triangular prism
1. 1 answer
2. 411 views
Can someone please help me with this question? Thanks!What organic molecules make up the structure that surrounds the DNA
1. 0 answers
2. 442 views
Describe all the points on the Earth’s surface that are exactly 4000 miles from the North Pole. If you need to, use 3960 miles
1. 0 answers
2. 753 views
Describe all the points on the Earth’s surface that are exactly 4000 miles from the North Pole. If you need to, use 3960 miles
1. 0 answers
2. 1,011 views
An isosceles triangle has two sides of length w that make a 2á-degree angle. Write down two different formulas for the area of
1. 1 answer
2. 1,738 views
Would Ireland be considered a developed country? How wealthy is it in comparison to other countries? Thanks!
1. 2 answers
2. 492 views
Is it true that during the McCarthy era that if accused communists gave names of other communists then they would be let off the
1. 1 answer
2. 631 views
A string has a linear density of 6.7 x 10-3 kg/m and is under a tension of 210 N. The string is 1.6 m long, is fixed at both
1. 1 answer
2. 1,197 views
The transverse standing wave on a string fixed at both ends is vibrating at its fundamental frequency of 250 Hz. What would be
1. 1 answer
2. 1,366 views
For the first 1 1/2 hours of a 91km journey the average speed was 30km/h.If the average speed for the reminder of the journey
1. 1 answer
2. 771 views
I have no clue as to how this problem should be solved... could i have some help please?Calculate the rms speed of SF6 molecules
1. 6 answers
2. 561 views
What is the difference between nationalism and federalism? Thanks!
1. 2 answers
2. 779 views
Describe 2 ways government could promote the use of photovoltaic power systems for homeowners.Thanks!
1. 2 answers
2. 489 views
At a picnic, a Styrofoam cup contains lemonade and ice at 0 degree C. The thickness of the cup is 2.0*10^-3m, and the area is
1. 1 answer
2. 991 views
At a picnic, a Styrofoam cup contains lemonade and ice at 0 degree C. The thickness of the cup is 2.0*10^-3m, and the area is
1. 4 answers
2. 700 views
I don't understand how to write the formulas for unit analysis. I can do the problems, but the explanation of the formulas in my
1. 1 answer
2. 989 views
Hello there. I was wondering if someone could please tell me whether or not you could call a government totalitarian and
1. 2 answers
2. 642 views
State the domain and range of the function.y=the cubed root of (x-2) Thanks SO much!
1. 0 answers
2. 470 views
what would the dependent and independent variable and control and experimental group be in this problem:John is intrigued by the
1. 6 answers
2. 3,554 views
Do you underline, put in italics, or quote article titles from magazines?
1. 1 answer
2. 577 views
Please help.Name all values of x that are not in the domain of the given function. f(x)=x-10/(sqrt x^2-16)
1. 0 answers
2. 433 views
Can someone help me with this question please?A linear function may have zero, one, or infinitely many zeros. Illustarte all
1. 0 answers
2. 423 views
Please can someone help?3/(x-7) + x^2+5x My answer is: x^3-2x^2-35x+3/(x-7) Is this right? I converted x^2+5x so that it had a
1. 0 answers
2. 328 views
Would you make sure I have chosen the best answer to these two questions?1. Teacher observation is one of the best methods of
1. 1 answer
2. 745 views
Which one would be the best answer?Would (A) be the best answer? The opposite of a traditional language program might be which:
1. 1 answer
2. 687 views
Can someone please help me with these problems? Please and thank you.1)Solve the equation: (1/x)+[x/(x+2)]=1 2)Simplify the
1. 1 answer
2. 756 views
How do you simplify[2/(x+4)]+2 ----------- [3/(x+4)]+1 I know the answer is 2(x+5)/(x+7), but I have little idea how to get
1. 0 answers
2. 582 views
Please help:A continuously compounded account starts with $2500 in principal. The annual interest rate is 11.3%. What is the
1. 0 answers
2. 820 views
Please help me with this one.You are trying to dissolve oxygen in water. Will you be successful? Explain your answer.
1. 0 answers
2. 649 views
Why if you dissolve cobalt chloride solution in distilled water and then pour acetone in it, the bottom part of the graduated
1. 3 answers
2. 3,928 views
How does molar mass affect the boiling point of covalent substances?The general rule is that heavier molecules boil at a higher
1. 0 answers
2. 501 views
What is the difference between y=sqrtx +3 and y=2sqrtx +3(I put spaces between x and the + to show that only the x is a
1. 0 answers
2. 598 views
In Fe(NO3)3, how many Fe atoms are there?One, three N, and 9 O. thank you
1. 0 answers
2. 440 views
Can someone please help me with this problem?4x-1 ---- 2x^2+3 Can you simplify this any further? no, its done thanks
1. 0 answers
2. 374 views
Can someone please help me with this one?Solve (5x+4)^1/2-3x=0 Just so you know, it is to the 1/2 power. Add 3x to both sides of
1. 0 answers
2. 661 views
Can someone help me finish this equation, please?We're adding Magnesium to Copper sulfate and getting Copper. This is what I
1. 2 answers
2. 838 views
oh thanksIf you have CH4, does the 4 apply to both the C and H or only to the H? It is the H that is four. only the H
1. 0 answers
2. 324 views
1.Would fraction notation for 38%be 19/50 ? 2.Would percent notation for 0.382 be 38.2% 3.Would percent notation for 2/3 be 66.6
1. 0 answers
2. 909 views
How do you balance this equation?C6H12O6 + O2 --> H2O + CO2 Thanks! C6H12O6+6O2=6H2O+6CO2 (that should be right!) C6H12O6 + 6O2
1. 0 answers
2. 853 views
Can you help me with these please?In general, is the boiling point of a polar liquid likely to be higher or lower than that of a
1. 0 answers
2. 512 views
Please, can someone tell me what this quote means?"What kills a skunk is the publicity it gives itself." -Abraham Lincoln
1. 0 answers
2. 571 views
Hi, ummm, can someone please help me with this question?What are some reasons that the victory of the management in the
1. 0 answers
2. 958 views