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ruth

Questions (94)

A system contains 0.15 𝑚3 of a gas at a pressure of 3.8 bar and 150℃ . It is expanded adiabatically till the pressure falls
1. 4 answers
2. 1,537 views
a plane leaves an airport P 10 degrees south,60 degrees east and flies due north at 800km/hr .(a)find its position after 24hrs.
1. 1 answer
2. 507 views
a plane leaves an airport P 10 degrees south,60 degrees east and flies due north at 800km/hr.find its position after 24hrs
1. 1 answer
2. 483 views
find the modulus argument and principal argument of each of the followinga) i b) -√5
1. 1 answer
2. 666 views
perform the indicated operation and express your result In a standard formi) (4+3i) + (6+4i) ii) 3 + 4i/6+3i
1. 1 answer
2. 644 views
in a class of 50 student,18 offered mathematics, 21 offered chemistry while 16 offered biology, 7 student offered mathematics
1. 1 answer
2. 758 views
what are the limitations of depression of freezing point
1. 1 answer
2. 1,028 views
calculate the total vapour pressure of mixture of methanol(64g) and ethanol(92g) at 298K given that the pure vapour pressure of
1. 4 answers
2. 1,217 views
describe the force board experiment to show how to obtain the resultant of two non-parallel coplanar forces acting at a point.
1. 0 answers
2. 600 views
Two fractions have the same denominator,15. The difference between the fractions is 2/5,and the result of dividing one of them
1. 2 answers
2. 841 views
the H.C.Of two numbers is 7and their L.C.M is 140.If one of the numbers is 28,find the other number
1. 2 answers
2. 512 views
If (a+b)^2 = a^2 + 6b +b^2 ,what is the value of a?
1. 3 answers
2. 299 views
the sum of two different numbers is 40 . if the smaller number is divided by 4 and the larger number by 12 the sum of the
1. 1 answer
2. 810 views
Importance of reflection of sound waves
1. 1 answer
2. 322 views
a contractor needs two men and 5 litres of paint to paint on a fenced wall that is 40m by 3m in 9 hours. how many men and how
1. 2 answers
2. 1,061 views
express 7.179179... as a fraction
1. 4 answers
2. 547 views
Express 4.050505... as a fraction
1. 2 answers
2. 1,442 views
a candy mixture is made from two kinds of candy one kind costs twice as much per kg as the other kind.$10 worth of the less
1. 1 answer
2. 483 views
Assume x and y have 5:3 profit sharing ratio respectivly and a new member enters by taking 1/5 from x and 1/3 from y.what will
1. 3 answers
2. 529 views
What separatation method used to separate silver chloride (solid))and sodium trioxonitrate
1. 5 answers
2. 4,212 views
Helium gas occupies a volume of 0.04 m3 at a pressure of 2 x 10 5 Pa (Nm -2 ) and temperature of 300 K. Calculate (i) the mass
1. 4 answers
2. 3,838 views
Three bags of wheat,two bags of corn, and one bag of oats weigh the same as one bag of wheat,one bag of corn and five bags of
1. 3 answers
2. 4,037 views
The North African Maghreb states, dominated by the Atlas Mountains, do not includeA. Libya. B. Algeria. C. Morocco. D. Tunisia.
1. 2 answers
2. 509 views
consider a series R-C circuit consisting of a 30 ohm resistor and 20*10^-6F capacitor connected to a 100V,50Hz power supply.find
1. 1 answer
2. 575 views
prove that I=square root of (I^2avarage). using I=Iosin(wt)
1. 0 answers
2. 362 views
a conducting loop consisting of a half circle of radius r=0.2m and three straight sections the half circle lies in a uniform
1. 1 answer
2. 825 views
what kind of reactions require oxidizing agent(reduced or oxidized) for example SO3->SO4 does it require oxidizing or reducing
1. 3 answers
2. 898 views
acetic acid has a pka of 4.8 how many ml of 0.1M acetic acid and 0.1M sodium acetate are required to prepare 1L of 0.1M buffer
1. 0 answers
2. 813 views
a)find the charge to mass ratio for an electron accelerated through 600v in a magnetic field of strength 45mT where the speed of
1. 1 answer
2. 412 views
an electron moves in the plane of paper toward the top of the page .a magnetic field is also in the plane of the page and
1. 2 answers
2. 2,946 views
a student connects the ends of a pencil lead to a 6.0V supply and measures the current to be 8.6A.the lead is rod of graphite of
1. 1 answer
2. 530 views
a galvanometer has a resistance 60 ohm and is of 5mA full scale deflection.how would you modify it so as to get 0-10V voltmeter
1. 1 answer
2. 1,368 views
how the organization of your choice goes about changing attitudes of their employees?
1. 1 answer
2. 321 views
conflict has always been a part of our lives, especially in the decision making processes. write down a case of multiple
1. 2 answers
2. 686 views
classical conditioning , develop analogy for industry
1. 2 answers
2. 431 views
the reaction A+3B—>2C+D is first order with respect to reactant A and second order with respect to reactant B if the
1. 3 answers
2. 2,342 views
the reaction A+3B->2C+D is first order with respect to reactant A and second order with respect to reactant B if the
1. 1 answer
2. 691 views
the reaction A+3B->2C+D is first order with respect to reactant A and second order with respect to reactant B if the
1. 0 answers
2. 629 views
how many electrons drift past a point on for 10 minutes current is 0.2 A.the charge on one electrons 1.6*10^-1
1. 1 answer
2. 403 views
1)a galvanometer has a resistance of 40 ohm and is of 3 mA full-scale deflection.how would you modify it to act as a 0-5 A
1. 2 answers
2. 1,095 views
calculate the maximum working current of an appliance rated at 2.4kw with an operatingvoltage of 240v
1. 1 answer
2. 377 views
calculate the maximum working current of an appliance rated at 2.4kw with an operating voltage of 240v
1. 1 answer
2. 361 views
calculate the value of the resistor that will give a total resistance of 4 ohms if it is connected in parallel with a 12 ohm
1. 1 answer
2. 472 views
a spherical ballon is inflated with gas at the rate 20cm^3 min. how fast is the radius of the ballon changing at the instant
1. 3 answers
2. 1,273 views
the radius r of a right circular cone is increasing at a rate of 2cm/min.the height h of the cone is related to the radius by
1. 2 answers
2. 1,410 views
find dy/dx assuming that y is differentiable with respect to x and x is also differentiable with respect to y.a)xy+x^2y^2=x^3y^3
1. 4 answers
2. 741 views
the radius r of a sphere is increasing at a rate of 3cm/min. find the rate of change of the area when r=3cm
1. 4 answers
2. 1,013 views
find the drift velocity of the electrons in the copper wire (there are 8.5*10^28 free electrons per m^3 in copper)
1. 1 answer
2. 659 views
a manufacturer wants to design an open box that has a square base and a surface area of 48sq units what dimension will produce a
1. 4 answers
2. 2,282 views
a parallel plate capacitor has an area of 5cm^2 and a capacitance of 3.5PF. the capacitor is connected to a 12v battery .after
1. 2 answers
2. 865 views
Solutioin A is sodiun hydroxide prepared by dissolving 2.0g in 250cm what is molar concentration of sodium hydroxide
1. 1 answer
2. 519 views
lnx monotonicity
1. 2 answers
2. 513 views
what is the potential energy of 4 point charges each of value Q at the corners of a square of side length a.
1. 6 answers
2. 1,228 views
what is the 3rd derivative of f(x)=x^2 e^x^2
1. 3 answers
2. 389 views
if h(x)=sinπ/x then find hderivative(4)
1. 1 answer
2. 383 views
what is the money value of 0.098
1. 1 answer
2. 543 views
If a random sample of size n = 65 is drawn, find ¦Ìx, ¦Ò x and P(24 ¡Ü x ¡Ü 26). (Round ¦Ò x to two decimal places and
1. 0 answers
2. 1,292 views
which has more number of particles, 3g of acetone or 3g of acetic acid
1. 1 answer
2. 840 views
lyf style of hiv and aids
1. 1 answer
2. 320 views
what factors account for the similarities and differences between the subdivisions in tropical climate zones?
1. 1 answer
2. 1,157 views
My algebra question is;The ordered pair (3,0) is found? I don't have a clue. Can you help please? Thank you, Ruth
1. 2 answers
2. 992 views
if apr is 7.3% daily and haad $400 1st 10 days, 1500 next 10 and 600 next 10 how much intrest was earned at end of month
1. 0 answers
2. 454 views
When scoring the MMPI 2, how can you intrepret it and what is the diagnosis according to Axis II. The scores are as follow:?= 13
1. 0 answers
2. 417 views
The breaking strength (in pounds) of a certain new synthetic is normally distributed, with a mean of 175 and a variance of 4.
1. 1 answer
2. 842 views
1. "bedside terror" is a play on the common phrase "beside manner", which is used to describe how well doctors relate to their
1. 3 answers
2. 631 views
A man of mass 67.1 kg stands on a scaffold supported by a vertical rope at each end. The scaffold has a mass of 24.6 kg and is
1. 0 answers
2. 649 views
-84/43 -7y=7
1. 1 answer
2. 549 views
x=9/104x+y=3 4(9/10) +y= 3
1. 3 answers
2. 290 views
simplify : 1/2( 2x-1)-(3x-3/2)
1. 3 answers
2. 326 views
-8/3•2
1. 2 answers
2. 272 views
write the opposite, reciprocal, and absolute value of each number . A: -1/2 #: 4 C: 0
1. 1 answer
2. 448 views
write the opposite, reciprocal, and absolute value of each number . A: -1/2 #: 4 C: 0
1. 2 answers
2. 754 views
(-1/6 + √4/9 )^2
1. 1 answer
2. 548 views
8-4( 2-3)^2 ÷ √4
1. 1 answer
2. 234 views
{y < -4/3}interval notation this is what I got... (-∞, -4/3)
1. 1 answer
2. 289 views
list the integers between -5 and 2, inclusive.
1. 5 answers
2. 1,253 views
how do computer viruses work?
1. 2 answers
2. 366 views
what is 2 meters long or 2 meters high that you can find in a home
1. 1 answer
2. 431 views
t squared plus 10t plus 16
1. 1 answer
2. 351 views
Application PracticeAnswer the following questions. If appropriate, use Equation Editor to show your work. First, save this file
1. 0 answers
2. 893 views
Determine the probability of rolling a sum of 9 or an odd number with twonumber cubes.
1. 1 answer
2. 497 views
translate into an algebraic expression34 multiplied by d I don't understand this
1. 2 answers
2. 568 views
A company's cost of doing business in a recent month was $18,000. Their revenue on sales for that month was $27,000. What
1. 1 answer
2. 470 views
Selena received a $42 commission for selling a computer for $1400. What percent is her commission?
1. 1 answer
2. 488 views
.A ______________ _ is a signal to which an organism responds
1. 2 answers
2. 814 views
why was italy the forst to use indo arabic numerals?
1. 1 answer
2. 442 views
c be the curve of the equation y=3x^5+10x^4-10x^3+60x^2+25x-5. among all points on the curve over the interval [-1,3], find the
1. 1 answer
2. 446 views
1285 hrs to manufacture first unit - expects to achieve a 92% unit learning curve - how many hours would be required to
1. 0 answers
2. 442 views
where is the setting of charollet web
1. 1 answer
2. 311 views
ogranelle that modifies,packages and transport material out of the celldescribes an organism that can exist onlly as a group of
1. 0 answers
2. 488 views
ogranelle that modifies,packages and transport material out of the celldescribes an organism that can exist onlly as a group of
1. 0 answers
2. 530 views
Let X1;X2;X3;...;X6 be a random sample from a distribution with the following probability desity function:Fx(x) = (1+4x)/3 for
1. 0 answers
2. 682 views
A normal population has an expected value of 60 and a variance of 30. Use the central limit theorem to determine what the sample
1. 0 answers
2. 692 views
Suppose X1;X2;...;X5 is a random sample from a n(0; variance) distribution. defineU = X1+X2+X3+X4; V =
1. 0 answers
2. 1,179 views

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