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ruby

Questions and answers by ruby

Questions (73)

what was the substance used to stuff nostrils?The ancient Egyptians stuffed the nostrils with resin or wax.
1. 1 answer
2. 507 views
how would u multiply two fractionsex. 2 2/3 times 3 5/6 First, make each one an improper fraction. To do this, multiply the
1. 2 answers
2. 706 views
I have a problem that I need help with. The diameter of the oil molecule has to be calculated and presented in scientific
1. 1 answer
2. 570 views
addtional information: the diameter of the oil film on the water is 40cm^2see my post.
1. 1 answer
2. 867 views
Assistance required as to why visible light is not emitted when infrared radiation falls on fluorescent materials.
1. 1 answer
2. 1,013 views
help needed in drawing the diagram to show how hydrogen has numerous spectral linesI also need help with this question....
1. 1 answer
2. 641 views
I need help in drawing a structual formula for hydrogen cyanide(HCN)and cyanogen(CN)2, the drawing has to bear in mind the
1. 1 answer
2. 454 views
I would like my equation checked, sodium cyanide and water.I have worked the balanced equation as: NaCN+H20=NaOH+HCN.If you want
1. 1 answer
2. 572 views
In the compound tocainide I need to identify the two groups of atoms/groups that are linked with its binding to receptor cells
1. 1 answer
2. 375 views
I require assistance with the drawing of the lewis structures for hydrogen cyanide and cyanogen. I have already drawn the
1. 1 answer
2. 527 views
I am in the process of calculating the hydrogen ion concentration in a .25litre solution of sulfuric acid,.21g of sulfuric acid
1. 1 answer
2. 547 views
help required in calculating the pH value of a .84 mols per litre solution of sulfuric acid. I understand that pH = -log 10 (2x
1. 3 answers
2. 1,348 views
Help needed to draw a mating diagram where L is the dominant gene for the digestion of lactose and shows the crosses between two
1. 1 answer
2. 523 views
Help required, Gametes are produced in the process of meiosis. In humans, one pair of autosmes (chromosome 4) has a short arm
1. 2 answers
2. 732 views
in addition to the above a labelled diagram is also required to show the product cells derived from this cell at the telophase 2
1. 1 answer
2. 446 views
there are 3 rock types:(a)igneous,(b)sedimentary,(c)metamorphic.If rock (a)were to cut across both other rocks and (c) is the
1. 1 answer
2. 444 views
I would like to comfirm that the 4 cycles on Earth are: carbon, water and rock. I think the 4th one is the biosphere but am not
1. 1 answer
2. 481 views
earlier in this forum, marina asked the same question as i did. unfortunately, someone did answer, very clearly, but for some
1. 5 answers
2. 1,120 views
-A person throws a ball upward into the air with an initial velocity of 15 m per second.- How could you calculate how high the
1. 4 answers
2. 2,919 views
-Suppose that a person is standing on the edge of a cliff 50 m high, so that the ball in his/her hand can fall to the base of
1. 6 answers
2. 1,144 views
How would you reword the terms of this equation:(1/2)M Vo^2 = M g H Where H is the maximum height above the thrower's hand. H =
1. 7 answers
2. 514 views
i was given this in class:Pythagorean Theorem a^2 + b^2 = c^2 1.) O = 30° & Φ = 60° 2.) O = 45° & Φ = 45° 3.) O = 0 ° How
1. 2 answers
2. 510 views
How might nutrition affect growth, development, and learning for newborns to 3 years of age?
1. 2 answers
2. 957 views
What are some current nutritional issues, such as obesity or malnutrition, that might affect newborns to 3 years of age?
1. 1 answer
2. 390 views
ms sue i don't understand you comment
1. 1 answer
2. 332 views
Find the mean of the following set of numbers.13, 15, 18, 18, 18, 19, 22, 26, 28, 33
1. 1 answer
2. 271 views
Can you help me correct these sentences?1.She wants to become an environmental scientist she is especially interested in marine
1. 3 answers
2. 398 views
prove:tan*2x-sin*2x=sin*2xtan*2x
1. 1 answer
2. 424 views
is hypothesis accepted if can't be proven wrong?
1. 1 answer
2. 375 views
If 2.10 kJ of heat is needed to raise the temperature of a sample of metal from 10.°C to 28°C, how many kilojoules of heat
1. 1 answer
2. 452 views
a soccer player kicks a stationary ball giving it a speed of 20m/s at an angle of 15degrees to the horizontal. what is the
1. 4 answers
2. 1,796 views
Hi could you check my sentences to see if their right?
1. 3 answers
2. 299 views
i understand that media has changed our culture by making things easie to access and that we have became more reliable on the
1. 4 answers
2. 601 views
i know that media convergence is taking things and making putting it together as one service. like bundling cable internet and
1. 3 answers
2. 490 views
A coin with a diameter of 3.30 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular
1. 7 answers
2. 2,426 views
A coin with a diameter of 3.30 cm is dropped on edge onto a horizontal surface. The coin starts out with an initial angular
1. 5 answers
2. 580 views
two of the angle of a arallelogram measure 75 what are the measures of the other two angle
1. 1 answer
2. 317 views
the bus passes through Sierra Blanca, which is 90 miles from El Paso. About how long does it take the bus to get to Sierra
1. 1 answer
2. 393 views
write the fraction in lowest term
1. 1 answer
2. 402 views
against the Ku Klux Klan. Together, these were known as the _______ Acts.A. Grant B. Force C. Klan D. Reconciliation
1. 1 answer
2. 417 views
How to I round 613,572,947 to the nearest tens. My teacher confuses me with this. Would it be 50?
1. 5 answers
2. 484 views
what did LOWELL MILL STRIKERS do?
1. 4 answers
2. 432 views
1.The principal is $50,000. This is P.2.Research the annual interest rate for your investment. This is r. 3.State the time in
1. 1 answer
2. 464 views
1. Which of the following expressions is written in scientific notation?1. 73.4 x 105 2. 0.09 × 107 3. 80 x 103 4. 4.22 x
1. 3 answers
2. 2,128 views
1. A piece of rectangular block weighing 5 kg is pressed on a vertical wall by a horizontal force applied to the block. If the
1. 2 answers
2. 852 views
Assume you do not know the population standard deviation. describe how you form a 90% confidence interval to estimate the
1. 1 answer
2. 416 views
Mass of 2.3 kg and 4.5 kg is connected with the cord as shown. The coefficient of kinetic friction between box and floor is
1. 1 answer
2. 460 views
Product that using manufacturing process and its process.
1. 1 answer
2. 384 views
a block of mass 0,5kg is attached to a spring.The spring is compressed to a distance of 0,1m .The block is released .The block
1. 2 answers
2. 633 views
a block of mass 0,5kg is attached to a spring .The spring is compressed to a distance of0,1m.The block is released .The block
1. 3 answers
2. 1,371 views
two girls exeret a force of 30 N and 10 N on a bag in same direction. a dog tugs at bag and drag it in oppsite direction with
1. 4 answers
2. 669 views
a horizontal force of 3 N is excerted on an object while a vertical force of 4 N is excerted at the same time. calculate the
1. 3 answers
2. 477 views
(3^x + 3^x + 1) divided by 8answwer (3^2x + 1) divided by 8
1. 1 answer
2. 344 views
two ectors act on the same pont. what should the angle between them be so that a maximum resultant is obtaineda. o degree b. 90
1. 2 answers
2. 527 views
is this correct?:-4^4= -256 (-5)^2= 25 (-3)^5= -243 ( I don't get the meaning of the parantheses) thank you!
1. 1 answer
2. 365 views
Mary makes $12.50 per hr she worked 44.5 hrs so i did 40 times 12.50 then 4.5 times $18.75 the added the totals But her . wages
1. 1 answer
2. 402 views
You are skier A, the first skier in a skiing event with three other skiers. Compared to your time, skier B is slower, by a time
1. 3 answers
2. 1,169 views
You are skier A, the first skier in a skiing event with three other skiers. Compared to your time, skier B is slower, by a time
1. 1 answer
2. 458 views
a square carpet covers an area of 64 ft ^2. what is the length of each side of the carpet?
1. 4 answers
2. 1,494 views
The rate constant of a reaction is 6.2 x 10^-3s-1 at 25 degrees C, and the activation energy is 33.6 KJ/mol..What is k at 75
1. 2 answers
2. 531 views
tommy is playing with a kite, and it flies 80 feet high with 100 feet of string released. what is the horizontal distance from
1. 3 answers
2. 599 views
Which type of graph best shows data that are parts of a whole?
1. 16 answers
2. 4,040 views
You are provided with a 0.5M solution of NaCl. You require a working solution of 0.004M. Describe how you would prepare this
1. 2 answers
2. 566 views
how to solve 7x^2+7y^2-28x+63y-4=0 in general equation of circle?
1. 2 answers
2. 554 views
rewrite the sum in the form a(b+c) such that the integers have no common factor35 + 42
1. 5 answers
2. 1,407 views
x^-4 with a positive indice ?
1. 1 answer
2. 173 views
Which statement is a description of weather?
1. 4 answers
2. 261 views
Solve the equation for yy4.2x-1.4y=2.1
1. 1 answer
2. 361 views
If there are 3 vanilla cones eaten for every 7 chocolate cones, how many chocolate cones were eaten once the ice cream shoppe
1. 1 answer
2. 219 views
joliet is a keen walker she has a pedometer that show she has walked 1427350 paces so far this year. her average pace length is
1. 4 answers
2. 401 views
On pet day,18 children brought a pet to school. Two thirds of the pets were dogs. One ninth of the pets were cats. How many dogs
1. 3 answers
2. 420 views
Match the definition that best matches the term.(3 points)Put responses in the correct input to answer the question. Select a
1. 2 answers
2. 103 views
Match the definition that best matches the term.(3 points)Put responses in the correct input to answer the question. Select a
1. 2 answers
2. 133 views

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