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Questions (66)
Which major political and economic problems does North Korea face because of its autocratic policies and nuclear weapons
11 answers
5,296 views
Coprecipitation involves:
A. Precipitation of 2 insoluble substancs simultaneously from the same solution. B. Precipitation of a
1 answer
547 views
A spherical tank of radius 100ft is full of gasoline weighing 40 pounds per cubic feet how much work is done in pumping the
1 answer
796 views
If two bar magnets are brought together, north to north and south to south is the resultant pole strength of the combination
0 answers
610 views
2 plane mirrors are at a right angle facing each other. A laser is beamed into one of the mirrors at an incident angle of 30
0 answers
636 views
When a bar magnet is cut into 2, the two halves repel each other. Why?
What becomes the original north and south poles of that
0 answers
455 views
If 2 bar magnets are brought together, north to north and south to south is the resultant pole strength of the combination equal
1 answer
587 views
Are there magnets with a single magnetic pole? Is it possible for the pole strength to be different for the north and south
0 answers
509 views
When a bar magnet is cut into two halves repel each other. Why? What becomes of the original north and south poles of that
0 answers
536 views
How would you hook up 3 resistors in a circuit to get the maximum current and the minimum current?
5 answers
2,226 views
When does electrostatic force appear? Does moving a bent finger closely to a van degraff generator considered to exhibit
0 answers
557 views
A 5 ohms resistor is connected in parallel with the series assemvly of 2 ohms and 3 ohms resistors. The voltage drop across the
2 answers
863 views
A resistance r1=12ohms is connected in series with another resistance r2= 8 ohms. What resistance r3 must be connected in
2 answers
892 views
When does electrostatic force appear? Does moving a bent finger closely to a van degraff generator considered to exhibit
0 answers
445 views
During when does electrostatic force appear? Does moving a bent finger closely to a van degraff generator considered to exhibit
0 answers
506 views
How many electrons should be removed from the van de graaff generator so that its electric charge reaches 1.6 uC?
2 answers
1,385 views
If a current of 10.75 milliampere passes through a resistor of 5.5k ohms find the voltage drop aross the resistor. Is it v=IR
1 answer
577 views
1. Which factors led to the downfall of Ghana? Select all that apply.
A. Ghana was engaged in conflict with people to the north.
5 answers
2,498 views
Which of the following do the conflicts in both Darfur and Rwanda illustrate?
A. The environmental issues many African nations
27 answers
4,832 views
Tell which number is prime: 19, 28, 49, 63.
A.63*** B.49 C.28 D.19
14 answers
2,917 views
In which part of the plant would you expect to find cells with the most chloroplasts?
A.leaves*** B.roots C.xylem D.cambium
28 answers
9,576 views
Which part of the plant is responsible for absorbing water and nutrients?
A.leaves B.stem C.roots*** D.xylem
44 answers
10,574 views
Compare and contrast the US and Canadian forms of government. Give a basic framework for each government.
4 answers
659 views
calculate the volume needed to make 2.20 x 10^2 ml of 0.100M cacl2. what would be the total concentration of the final (Cl-)
0 answers
482 views
What are the major species in solution during the titration of citric acid with a strong base?
0 answers
789 views
What are the major species in a solution during the titration of citric acid with a strong base such as NaOH?
0 answers
703 views
A triangular park has a perimeter of 45 meters. What is the measurement of one side if each of the other two equal sides measure
2 answers
1,270 views
Calculate the molar concentration for each of the following.
a)The concentration of a brine solution containing 225 g for pure
1 answer
873 views
How to write three linear system that are equivalent to the linear system shown?
5x-4y= -3 2x + 7y= 5
0 answers
440 views
What is the value of x in the system shown?
y=1/5x+2 y=x-4
5 answers
397 views
What is the value of y in the system shown?
y=12x-3 y=-2x+4 Thanks
4 answers
590 views
Can someone show me and explain a step by step process how to do this problem? Thanks
1) Two equal but opposite charges re
1 answer
889 views
how do you find the hypotenuse of a triangle
3 answers
357 views
Needing help to get this answer right.
_c___ 3. What is the relationship between the alpha level, the size of the critical
2 answers
914 views
Needing some help to clarify this problem and help finding the right answer.
_b___ 2. Which of the following accurately describes
1 answer
578 views
A sample of n = 25 scores has M = 20 and s2 = 9. What is the sample standard deviation?
a. 3 b. 4.5 c. 9 d. 81
1 answer
2,036 views
In a population of N = 10 scores, the smallest score is X = 8 and the largest score is X = 20. Using the concept of real limits,
2 answers
2,991 views
A researcher measures eye color for a sample of n = 50 people. Which measure of central tendency would be appropriate to
4 answers
5,526 views
For a negatively skewed distribution with a mode of X = 25 and a median of 20, the mean is probably ____.
a. greater than 25 b.
0 answers
1,105 views
One item on a questionnaire asks, "How many siblings (brothers and sisters) did you have when you were a child?" A researcher
1 answer
2,595 views
In a correlational study
a. 1 variable is measured and 2 groups are compared b. 2 variables are measured and 2 groups are
2 answers
2,342 views
Can someone please help with this problem to advise how to set up and in the book Essential of Statistics for the Behavioral
2 answers
926 views
If the alpha level is changed from a=.05 to a=.01.
a. What happens to the boundaries for the critical region? b. What happens to
1 answer
4,426 views
I bought 16.8 gallons of gas at a cost of $61.47. Estimate the unit price(cost per gallon)
1 answer
426 views
A crate is initially at rest on a rough, horizontal floor. The crate moves in a straight line as it is pushed resulting in the
0 answers
763 views
Sally dilivered 148 newspapers and received $0.03 per paper. What were her
earnings?
2 answers
387 views
Larry has an annual return of $213.00 from $3000.00 invested at simple interest. One at 5% and the other at 8%. How much is
1 answer
1,245 views
An empty glass jar weighing 1.54 kg is in the shape of a cylinder which has a radius of 14cm and a height of 20cm. Calculate how
2 answers
591 views
I can not figure these out for the life of me. Any help is appreciated.
1. Find the final amount of an investment if $2,000 is
3 answers
546 views
Find the possible values of a, if the distance between the points is 5, and the coordinates are (1,1) and (4,a)
I'm not quite
2 answers
611 views
Tuyns et al. (1977) carried out a case-control study of esophageal cancer in the region known as Ille-et-Vilaine in Brittany,
1 answer
798 views
If a small stream of liquid A was strongly deflected by a charged object, liquid B was moderately deflected, and liquid C was
1 answer
709 views
Q. A 10.6 kg weather rocket generates a thrust of 226.0 N. The rocket, pointing upward, is clamped to the top of a vertical
3 answers
644 views
1. A force F = (3.99xi + 2.86yj) N acts on an object as it moves in the x direction from the origin to x = 4.45 m. Calculate the
2 answers
634 views
every physics helpers are not getting any responses. can someone help on physics questions pleases???
7 answers
668 views
Q. A force F = (3.99xi + 2.86yj) N acts on an object as it moves in the x direction from the origin to x = 4.45 m. Calculate the
2 answers
573 views
Q. A 10.6 kg weather rocket generates a thrust of 226.0 N. The rocket, pointing upward, is clamped to the top of a vertical
2 answers
956 views
Q. A person wants to shoot a rocket off of a mountain 3.26 km high so that the rocket, when shot at 31.3¡Æ above the
1 answer
653 views
what's another word for poop?
11 answers
908 views
Pretend the program in Senegal had been reducing infant mortality at a rate of 12.5 % per year. How long would it take for
1 answer
1,091 views
Pretend the program in Senegal had been reducing infant mortality at a rate of 12.5 % per year. How long would it take for
1 answer
1,144 views
a bottle of a soft drink looks pure, but it is not, how could you demonstrate that it is a mixture?
thanks
2 answers
581 views
Where do I get started with this?
Write a 700- to 1,050-word paper in APA format describing the effects of taxation and price
3 answers
815 views
4^-x=(1/256)
I think the answer or I guess the answer I have is: 4^-x=16^-2
1 answer
538 views
I need to predict the acid/base reactions of sodium carbonate with HCl, CH3COOH, NH3, and NaOH.
I'm stuck, when I'm writing out
0 answers
1,049 views
The infrared spectrum of CH3CH2NH2 shows two absorptions not shown by bromoethane. Identify the bonds responsible for these
0 answers
554 views