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A ball with a mass of 12 g is moving at 15 m/s. It collides with a second ball with a mass of 36 g moving at 5 m/s in the same
1. 1 answer
2. 2,126 views
Calculate the molar it of a solution that contains 5.4 get of sodium sulfate dissolved in enough water to make 3.5 L of solution
1. 1 answer
2. 529 views
a.) which of the following reactions should have the larger emf under standard conditions & why?CuSO4 (aq) + Pb (s) goes to
1. 1 answer
2. 2,813 views
A high-speed bullet train accelerates and decelerates at the rate of 4 ft/s2. Its maximum cruising speed is 90 mi/h. (Round your
1. 5 answers
2. 4,188 views
A 77 kg window cleaner uses a 13 kg ladder that is 7.1 m long. He places one end on the ground 3.8 m from a wall, rests the
1. 0 answers
2. 671 views
how should the ph of a 0.1 m solution of nac2h3o2 compared with that of a 0.1 m solution of kc2h3o2?
1. 1 answer
2. 3,574 views
I am thrown off by this question because they don't give a molecule to work with. Also i don't know how i would work the acid...
1. 1 answer
2. 506 views
If the speed of the cart at the first photogate is 2.3 m/s, and the speed of the cart at the first photogate is 1.8 m/s, what is
1. 2 answers
2. 979 views
A 96.0-g wooden block is initially at rest on a rough horizontal surface when a 11.4-g bullet is fired horizontally into (but
1. 0 answers
2. 657 views
A solution is prepared by placing 27.8 g of KCl in a 0.700 L volumetric flask and adding water to dissolve the solid, then
1. 1 answer
2. 730 views
T1/2(Ra-226) = 1602 yearsWhat is the activity of 1 gram of Ra-226? Give the answer in Ci and Bq? What would be this activity
1. 0 answers
2. 504 views
Why is the solubility of butane 6.1 mg / 100 g water, yet hexane is immiscible in water?
1. 1 answer
2. 1,093 views
a large nuclear power plant generates electric energy at the rate of 1000 MW. how many joules of electricity does the plant
1. 1 answer
2. 884 views
Central middle school sold 50 tickets for one night at the school play. Student tickets sold for 2$ each and adult tickets sold
1. 1 answer
2. 548 views
Central middle school sold 50 tickets for one night at the school play. Student tickets sold for 2$ each and adult tickets sold
1. 2 answers
2. 534 views
Solutions of potassium carbonate, copper(II) chloride, and lead(II) nitrate are each added to a beaker. Will any compound(s)
1. 5 answers
2. 3,712 views
Emission Analysis of Aqueous Solutions of Groups IA and IIA Metal SaltsA student records two potassium emission spectra: 1) one
1. 2 answers
2. 642 views
Identification of an unknown powdered metal by reaction with HCl:Why does the pH of the HCl solution initially increase very
1. 2 answers
2. 1,440 views
A particle travels along the curve c(t) = (6t^3-6, 7t^2-4). If time t is measured in seconds and if the coordinates are measured
1. 1 answer
2. 518 views
Calculate the length of the path over the given interval: (sin6t, cos6t), 0<t<pi
1. 2 answers
2. 805 views
Calculate the length of the path over the given interval: c(t) = (3t^2, 4t^3), 2<t<5
1. 1 answer
2. 1,299 views
Use a formula for slope of a line tangent to a parametric curve to find dy/dx for the curve c(s) = (s^(-1)-6s, -7s^3) at the
1. 1 answer
2. 530 views
Calculate the length of the path over the given interval: c(t) = (3t^2, 4t^3), 2<t<5
1. 0 answers
2. 534 views
Calculate the length of the path over the given interval: (sin6t, cos6t), 0<t<pi
1. 0 answers
2. 402 views
A particle travels along the curve c(t) = (6t^3-6, 7t^2-4). If time t is measured in seconds and if the coordinates are measured
1. 1 answer
2. 470 views
5kg rock is dropped into a well and a splash is heard after 3 seconds , how deep is the well? Ignore air resistance
1. 1 answer
2. 529 views
52*10E-10Kg
1. 1 answer
2. 271 views
What is the osmotic pressure in torr of a 0.0155 M glucose solution at body temperature ( 35.7 °C)? What are the boiling and
1. 1 answer
2. 524 views
3PbO + 2NH3 ---> 3Pb + N2 + 3H2OBased on the above balanced equation, If given 12.6 moles of NH3, how many moles of lead (Pb)
1. 0 answers
2. 996 views
How many moles is 158.5 grams of CaCl2
1. 0 answers
2. 430 views
120 people are given a survey about which television shows they watch.ABC=55 NBC=30 CBS=40 ABC and CBS=10 ABC and NBC=12 NBC and
1. 0 answers
2. 1,216 views
A boat's crew rowed 10.5 miles downstream, with the current, in 1.5 hours. The return trip upstream, against the current,
1. 1 answer
2. 1,070 views
4 famous poet during Spain golden age ?
1. 1 answer
2. 475 views
Determine how many calories are need to heat 30 grams of water from 10 degrees C to 30 degrees C
1. 2 answers
2. 958 views
1. Which molecule is the major contributor to the increase in mass observed in a full grown plant (i.e. tree) compared to a
1. 0 answers
2. 431 views
The demand function for a certain brand of blank digital camcorder tapes is given byp=−0.02x^2−0.1x+24 where p is the
1. 0 answers
2. 1,080 views
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis.y=x^2 y=0 x=3
1. 1 answer
2. 435 views
Find the volume of the solid formed by rotating the region enclosed byx=0 x=1 y=0 y=4+x^5
1. 1 answer
2. 525 views
Find the volume of the solid obtained by rotating the region bounded by the given curves about the specified axis.y=3x^2, x=1,
1. 1 answer
2. 974 views
The demand function for a certain brand of blank digital camcorder tapes is given byp=−0.02x^2−0.1x+24 where p is the
1. 0 answers
2. 734 views
Find the slope of the tangent line to the curve 0x^2−2xy+2y^3=10 at point (-4,1)Help please? Thanks in advance
1. 1 answer
2. 523 views
Find the slope of the tangent line to the curve 0x^2−2xy+2y^3=10 at point (-4,1)Help please? Thanks in advance
1. 0 answers
2. 364 views
If √x+√y=10 and y(16)=36, find y'(16) by implicit differentiation.If somebody could please help me by explaining how to
1. 1 answer
2. 7,490 views
The girls' high school basketball team played 12 games. They won 6 more games than they lost. Find the number of games the
1. 1 answer
2. 880 views
I have a positive attitude, even with boring tasks, I still get the job done./or I never complain.How can I phrase this into a
1. 1 answer
2. 445 views
At noon, ship A is 50 miles north of ship B and is headed south at 16mph. Ship B is headed west at 12 mph. At what time are they
1. 0 answers
2. 535 views
Two ships leave the same port at noon. Ship A sails north at 22 mph, and ship B sails east at 12 mph. How fast is the distance
1. 2 answers
2. 8,691 views
At 3 P.M, ship A is 150 km west of ship B. Ship A is sailing east at 35 km/h and ship B is sailing north at 25 km/h. How fast is
1. 0 answers
2. 885 views
11+2*(6+11)
1. 3 answers
2. 216 views
In the following experiment, a coffee-cup calorimeter containing 100 \rm mL of \rm H_2O is used. The initial temperature of the
1. 2 answers
2. 1,097 views
Which of the following are three common characteristics of echinoderms?A tube feet, circulatory system, body symmetry B
1. 1 answer
2. 1,130 views
Southwest Asia can best be characterized asA) an area with few resources. B) a desert with an arid and semiarid climate. C) a
1. 1 answer
2. 1,001 views
if someone is infected with the common cold virus, which type of nonspecific immune response would attempt to deal with the
1. 0 answers
2. 1,166 views
1.) What are the equilibrium partial pressures of CO and CO2 if co is the gas present initially, at a partial pressure of .912
1. 2 answers
2. 1,404 views
KMno4+NaHso3
1. 1 answer
2. 686 views
Suppose an enzyme lowers the activation energy by an order of magnitude.What is the ratio of catalyzed rate to the uncatalyzed
1. 0 answers
2. 537 views
if cot(x-10)=tan(4x) what does x equal?
1. 1 answer
2. 751 views
How would i go about balancing the following equation? My teacher said something about the charges:Silver Nitrate + Sodium
1. 1 answer
2. 379 views
You are planning to plant a garden in your backyard. The garden will have a rectangular shape with dimensions 10ft by 6ft.
1. 0 answers
2. 1,788 views
I need help on where to begin with this problem.You are installing a new deck around your pool. The pool is rectangular with the
1. 1 answer
2. 605 views
3rd grade create an algorithm that has a difference of 20
1. 4 answers
2. 329 views
what is the scientific notation of 1,890,000
1. 1 answer
2. 571 views
A stone is launched straight up by a slingshot. Its initial speed is 20.1 m/s and the stone is 1.30 m above the ground when
1. 1 answer
2. 2,288 views
"Out of spite, the human being pretended not to believe that it was Snowball who had destroyed the windmill…The animals knew
1. 6 answers
2. 652 views
Explain the SQR3 OF READING.
1. 1 answer
2. 408 views
What are the advantages of study reading?
1. 0 answers
2. 333 views
How did the use of advanced technology make World War II the most devastating war in history?
1. 3 answers
2. 538 views
Was Daniel Bernoulli for the atomic theory or against it and explain why?
1. 3 answers
2. 545 views
Trying to figure out how to do problems like these. So confused!1. The receivables turnover for 2009 is 10 times. 2. All sales
1. 0 answers
2. 643 views
Differentiate the function.h(x)= ln(x+ sqrt(x^2 -4))
1. 2 answers
2. 829 views
1. The csc^-1(1.23)I got 1.061 in radian mode 2. Cot^-1(-2.26) I got 0.8240 in radians 3. Cos^-1(-0.84) I got 2.568 Are these
1. 1 answer
2. 530 views
Sam, whose mass is 72.0 kg, takes off down a 51.0 m high, 11.0^\circ slope on his jet-powered skis. The skis have a thrust of
1. 0 answers
2. 837 views
Susie has a budget of $92 to spend on clothes. The shorts she wants to buy are on sale for $14 each. The shirts are on sale for
1. 2 answers
2. 861 views
How much work does it take to raise a 3kg object 5m into the air?(a) What is the potential energy of the object when it is 5m in
1. 0 answers
2. 537 views
reading titles and headings,and trying to get an overview of what lies ahead in reading passageis called
1. 1 answer
2. 622 views
A 4kg block is sitting on the floor.(a) How much potential energy does it have? (b) How much kinetic energy does it have? (c)
1. 1 answer
2. 948 views
as a baseball player strikes the ball with his batt the 1kg bat applies an average force of 250N on the .15kg baseball for .2
1. 1 answer
2. 1,537 views
lim (9x^4+2x+1)^1/2/(3x^2+1)as x->-infinity
1. 1 answer
2. 475 views
Steel expands 1 part in 100 000 for each 1°C increase in temperature. If the 1.5km main span of steel suspension bridge had no
1. 1 answer
2. 1,471 views
A space shuttle 200 miles above the earth is orbiting the. Earth once every 6 hours. how far does the shuttle travel in one
1. 2 answers
2. 6,312 views
For business marketing, we are planning to make and sell soap, with our target audience as teenagers. What do you think we need
1. 2 answers
2. 765 views
What is the primary focus on all biological studies?
1. 1 answer
2. 991 views
How is the historical event of the 1981 Springbok Tour is, or was, of significance to New Zealanders.
1. 1 answer
2. 438 views
When magnesium is burnt completely in air the totol mass of the product was found to be grater than the original mass of the
1. 1 answer
2. 517 views
A certain geneticist is interested in the proportion of males and females in the population that have a certain minor blood
1. 0 answers
2. 937 views
It is claimed that an automobile is driven on the average more than 20,000 kilometers per year. Random sample of 10 automobile
1. 0 answers
2. 1,160 views
A sample of 25 men has a mean weight of 65kg with standard deviation of 8kg. Suppose that the weight of men follows normal
1. 0 answers
2. 550 views
If 50% of the automobiles sold by an agency for a certain car are equipped with diesel engines, let X represent the number of
1. 0 answers
2. 499 views
In a fish tank, there are two fewer blue fish than three times the number of yellow fish. If there are 10 blue fish, what is the
1. 1 answer
2. 1,134 views
Calculate the molarity of each solution.a) 1.0 mol KCl in 750 mL of solution b) 0.50 mol MgCl2 in 1.5 L of solution
1. 0 answers
2. 1,512 views
n insurance company wants to offer a new 5-year, level-term life insurance policy to recent college graduates. The policy will
1. 1 answer
2. 621 views
How did the pattern of European immigration shift in 1890?
1. 1 answer
2. 695 views
ive been trying to figure this question out for 20 minutes.. if you could help me that would be great.- Dennis, a new medical
1. 2 answers
2. 2,035 views
Write an equation for a cosine function with an amplitude of 2/3 , a period of pi, and a vertical shift of 2 units up.
1. 0 answers
2. 550 views
What is the best way to tell a chemical change has taken place?1. The matter changes color 2. The mixture separates into layers
1. 2 answers
2. 290 views
my moth balls froze at 54 degrees celsius, what kind are they?
1. 1 answer
2. 282 views
Assume a population of any 4 numbers(suppose: 4,8,15,19). Select a random sample of size 2 with replacement from the population.
1. 0 answers
2. 562 views
A sample of carboxylic acid is added to 50.0 mL of 2.27 M NaOH and the excess NaOH required 28.7 mL of 1.86 M HCl for
1. 1 answer
2. 497 views
Graph the results of a coin toss:Toss Coins 0 20 1 12 2 5 3 1 4 0 State an equation that best fits the results (use n to
1. 0 answers
2. 453 views
Sketch y= -(1/4) (2)^(x-4)+5I know that the basic equation is y=2^x so is the graph translated 4 units right, vertically
1. 0 answers
2. 475 views

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