Questions LLC
Login
or
Sign Up
Ask a New Question
Sean
Questions and answers by
Sean
, page 3
Questions (339)
The period of longitudinal sinusoidal wave is 0.16 seconds and its wavelength is 8.0 meters. Calculate the wave's speed,
2 answers
689 views
A horizontal wire is held taut by a mass M hanging from its end over a pulley. A harmonic wave of wavelength is produced on the
1 answer
482 views
A wave described by y(x,t)=Asin(kx-wt) moves down a string. What is the maximum transverse speed an atom of the string can have?
1 answer
443 views
A car is moving at 40 mi/h along a straight line when the driver sees a light turn red. She hits the brakes when she is 100 ft
3 answers
387 views
A gas occupies a volume of 502 cm3 at 20.0 C. What will be its volume at 106 C?
I understand that it follows Charles' Law where
2 answers
508 views
what determines the color of light when an electron moves from one level to another
2 answers
796 views
find the molarity of 150. g H2SO4 solute dissolved into 900. g H2O solvent
1 answer
317 views
15.68
squared
4 answers
301 views
When maternal oxygen is
transferred to the fetus and fetal CO2 is passed back, how does this affect the maternal dissociation
1 answer
375 views
My question is more conceptual. It is expressed in a series of two problems:
What energy change occurs when 1.2 moles of methane
3 answers
544 views
If I plant a 7 foot tall tree. The height (h) of the tree, in feet, after n years is given by the equation h + 4n + 7. In how
2 answers
539 views
1. Air flowing through a vent pipe of cross-sectional area 21[m^2] is traveling 0.89[ms^-1].
What is the flowrate? [18.7 m3s-1]
1 answer
393 views
Determine the value of the equilibrium constant,Kgoal , for the reaction
N2(g)+O2(g)+H2(g)<=> (1/2)N2H4(g) + NO2(g) Kgoal=? by
4 answers
3,396 views
An aqueous solution containing 10.50 g of a compound in 100.0 ml of solution has
an osmotic pressure of 0.0187 atm. at 25°C.
2 answers
582 views
What is the boiling point of a 25.20% (m/v) KNO3 solution ? (Kf of water = 1.86
0C/molal) (Kb of water = .52 0C/molal) (molar
1 answer
861 views
H2C2O4.2H2O(s) is primary standard substance. 2.3688g of oxalic acid hydrate were completely neutralized by 42.56ml of NaOH
5 answers
4,239 views
A 23.4 mL sample of 0.300 M trimethylamine, (CH3)3N, is titrated with 0.399 M perchloric acid.
After adding 6.67 mL of perchloric
2 answers
887 views
Write the conjugate acid for each of the following:
a. HCO3^1- ____________________ b. H2O ____________________
1 answer
348 views
Write the conjugate base for each of the following:
a. HPO4^-2 ____________________ b. H2O ____________________
1 answer
366 views
a) Write Bronsted acid-base equilibrium equations for the following:
b) Show the acid-base conjugated species, labeling all
2 answers
524 views
What effect on the molar mass of the unknown acid would each of the following
have-that is-would it make the calculated molar
3 answers
1,358 views
What is the coeffecient of drag for the shape that has diameter 7.32[cm]? .
Use three sig. figs. or N/A if there is not enough
1 answer
376 views
1. You have a large wind tunnel of cross-sectional area 0.61[m2]. The wind speed is 4[ms-1]. Assume air density is 1 [kgm-3].
1 answer
492 views
Use logarithmic differentiation to find derivative of y=x^x^2 x > 0. Please show all steps so I can follow the steps. Thank
2 answers
500 views
Find the derivative of the following:
f(x)=ln(e^(2x)/(x^2-4)^3 Please show all steps so I can follow Thanks!
4 answers
382 views
Use logarithmic differentiation to find the following derivative
y=(x+6)^4/(x-5)^6. Please show all steps so I can follow for
3 answers
456 views
Use logarithmic differentiation to find the derivative of the following:
y=x^x^2 x>0 Please show all steps so I can following for
1 answer
337 views
Find the exact value of cos (2theta) given csc theta = 8/3 and 0 < theta < pi/2
2 answers
898 views
Kylee bought a pack of 12 cookies. Two thirds of the cookies are peanut butter. How many cookies in the pack are peanut butter?
3 answers
451 views
9 less than the product of 7 squared and a number is 6
1 answer
367 views
A statistics teacher believes that the final exam grade for her elementary stats class have a normal distribution with a mean of
2 answers
962 views
If two protons and two neutrons are removed from the nucleus of an oxygen-16 atom, a nucleus of which element remains?
Carbon 12
3 answers
614 views
Determine the Null and Alternative Hypothesis for the following:
A.) A company manufactures flares, they select 100 at random to
2 answers
498 views
Select the x-coordinate of the vertex of the parabola defined by the function f(x) = -3x2 + 5x + 8.
1 answer
449 views
debugging exercise:
Private Sub btnItemNumber_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles
1 answer
364 views
A 1500-kg car moving north at 27.0 m/s is struck by a 2165-kg car moving east at 13.0 m/s. The cars are stuck together. How fast
2 answers
599 views
A physics book slides off a horizontal table top with a speed of 1.30 m/s . It strikes the floor after a time of 0.380s . Ignore
4 answers
2,673 views
Two objects with masses represented by m1 and m2 are moving such that their combined total momentum has a magnitude of 16.3 kg
4 answers
2,193 views
The ratio of the lengths of strings that play the notes D and B (on a guitar), is 27 to 16. If a string 64 cm long plays B, what
4 answers
2,077 views
Due to continental drift, the North American and European continents are drifting apart at an average speed of about 3 cm per
2 answers
1,113 views
A train is moving parallel and adjacent to a highway with a constant speed of 22 m/s. Ini- tially a car is 35 m behind the
3 answers
1,222 views
The hare and the tortoise are at the starting line together. When the gun goes off, the hare moves off at a constant speed of 10
4 answers
2,982 views
The speed of light in a vacuum is 2.998 x 10^8 m/s. What is the speed of light in miles per hour?
(1 km = 06214 miles)
5 answers
4,540 views
Can someone help me with Chemistry Homework Due Tomorrow, Its about the Electrolysis of Hydrochloric Acid Practical we did and I
1 answer
462 views
An aqueous solution of ammonium nitrite decomposes when heated to give off nitrogen gas and water. This reaction can be used to
1 answer
747 views
An aqueous solution of ammonium nitrite decomposes when heated to give off nitogen gas and water. This reaction can be used to
2 answers
605 views
A 1.0-kg cart and a 0.50-kg cart sit at different positions on a low-friction track. You push on the 1.0-kg cart with a constant
4 answers
2,670 views
A cannon fires a 0.598 kg shell with initial velocity 10 m/s in the direction 46◦ above the horizontal.
The shell’s
3 answers
1,122 views
This is the question that was asked:
The components of a traditional analysis model (data flow diagrams, process definitions,
2 answers
561 views
The components of a traditional analysis model (data flow diagrams, process definitions, entity-relationship diagrams, and data
1 answer
485 views
Is the boiling point of 0.01 m potassium fluoride solution higher or lower than that of 0.01 m glucose solution? Explain
4 answers
1,399 views
Converging lens has focal lenght 8 cm , at what distance you will have to place the object in the following devices;
1)
1 answer
478 views
A 3kw engine operates for 3secs, 10kgf force is applied find the Displacement.
1 answer
400 views
A cannon is fired at 30 degrees above the horizontal with a velocity of 200 m/s from the edge of a 125 m high cliff. Calculate
4 answers
1,952 views
Seiji and Gavin both worked hard over the summer. Together, they earned a total of $425. Gavin earned $25 more than Seiji. much
4 answers
1,983 views
The function w(x) = -0.01x² + 0.27x + 8.60 can be used to estimate the number of self-employed workers in America in millions,
4 answers
1,127 views
. If i = ¡Ì-1, then (i + 1)(6i ¨C 10) is equivalent to?
3 answers
496 views
If f(x) and g(x) are two functions defined by f(x) = �ã(x + 1), g(x) = | x - 1 |, then what is the value of f(g(9))?
3 answers
700 views
A liter of water is used to cool some electronics. If 1000 J of heat is given off by the electronics, by what
temperature does
2 answers
536 views
An equal amount of heat is transferred to two containers containing water at the same temperature. If the
second container
1 answer
399 views
Find tan theta if theta is an angle in standard position and the point with coordinates (–12, 5) lies on the terminal
3 answers
801 views
Write an equation of the cosine function with the given amplitude, period, phase shift, and vertical shift.
amplitude = 3, period
4 answers
2,788 views
Alice takes 4 hours to paint a wall. With sam's help, they can paint the wall in 3 hours. Without help, how long would it take
3 answers
408 views
Given A=2i+3j and B=4i-j
Compute for the following a. |a|+|b| b. 5A-6B c. |5A-6B| d. |5A|-|6B|
1 answer
288 views
Find the curvature x=t^2, y=t^3
Using k=|xÿ-yx|/(x^2+y^2)^3/2
1 answer
336 views
Find equations of the osculating circles of the ellipse 9x^2+4y^2=36 at the points (2,0)&(0,3).
2 answers
1,131 views
According to the DPT of Health Services , 12% of 30-39 have depression. Suppose 3 30-39 year olds are selected randomly what is
3 answers
430 views
In a third game. Javier first two darts land in R what is the maximum possible score in this game
1 answer
354 views
The circumference of a rear wheel of a carriage is 50 inches more than a front wheel. If the rear wheel makes as many
2 answers
523 views
A soccer ball is kicked with resultant velocity of 22.6 m/s at an angle of 60 degrees. What is the time to Apex, what is the
1 answer
365 views
A man runs east 9.8 m/s for 11 s, stops for 6.9 s, then runs back (west) at 1.5 m/s for 1.2 s. What is the man's average
1 answer
431 views
A car of mass 1300 kg is driving along a road at speed of 28m/s. As it approaches some traffic lights, the lights change to red
3 answers
736 views
A car of mass 1300 kg is driving along a road at speed of 28m/s. As it approaches some traffic lights, the lights change to red
2 answers
895 views
A car traveling at a velocity of 2m/s undergoes an acceleration of 4.5m/s2 over a distance of 340m.How fast will it be going
1 answer
498 views
A block of 3kg is pulled up a smooth slope with a force of 24N and the slope is of an angle 25 degrees. Calculate the
1 answer
459 views
If a certain number is added to the numerator and denominator of 11/13, the result is 11/12. Find the number.
4 answers
3,276 views
A tennis ball is dropped from a height of 32 feet, rebounding to 1/2 its former height with each bounce. How far will the ball
4 answers
834 views
Given that 2cos^2 x - 3sin x -3 = 0, show that 2sin^2 x + 3sin x +1 = 0?
Hence solve 2cos^2 x + 4sin x - 3 = 0, giving all
3 answers
910 views
Solve 2cos^2(x) + 4sin(x)-3 = 0, giving all solutions in the interval 0 ≤ x ≤ 2π
4 answers
533 views
Show that the equation tanθ = sinθ can be written in the form sinθ(1 - 5cosθ) = 0?
1 answer
419 views
Upon retirement (in 40 years) you want to receive $10,000 each month for a period of 28 years. This money resides in an account
2 answers
511 views
He has narrowed the identity of his
unknown to either molecule X, molecule Y, or molecule Z. The Merck Index tells him that all
3 answers
599 views
what is the most impressive example of anne's inner strength in act 2?
3 answers
1,000 views
A tourist traveled on a motorboat against the current for 25 km. And then returned back on a raft. In the boat the tourist
2 answers
1,215 views
A train covered the distance of 400 km between A and B at a certain speed. On the way back it covered 2/5 of the distance at
4 answers
708 views
A Partially weather balloon has a volume of 195 L at a pressure of 0.993 atm. What will be the pressure in the balloon when it
3 answers
1,005 views
How many grams of pure uranium can theoretically be extracted from a 10.0 kg sample of pitchblende, which is 92.0% UO2? Im not
3 answers
1,146 views
If the percent yeild of the following equation is 55%, how many grams of H2SO4 are produced when 4.88 x 10^24 molecules of SO3
1 answer
450 views
1. Tiny Tim’s father, Bob Cratchit, works for Scrooge.
What is the appositive in this sentence? Tiny Tim father Bob Cratchit
20 answers
4,578 views
Solve: log(8y+12)=2
1 answer
320 views
Consider the reaction: 2H2+2NO->N2+2H2O. Initially 1.20mol of H2 and 0.95 mol of NO are placed in a container(all reactants and
4 answers
638 views
How do i find the PH and pOH of 12.5ml of 15.8M HNO3 added to 400ml of 0.57M KOH
2 answers
588 views
What volume of 0.1244M hydrochloric acid is required to neutralize 24.81 ml of 0.1026M barium hydroxide?
from the mole to mole
1 answer
451 views
why does chlorobenzoic acid have a lower freezing point than benzoic acid explain?
would this have something to do with the
2 answers
503 views
"When before in human history has so humanity collectively surrendered so much of its leisure to one toy, one mass diversion?"
4 answers
1,008 views
How does the repetition in the preceding sentence convey the author's negative attitude toward television?
I think it shows how
4 answers
965 views
The story is "Trouble With Television"
It has become fashionable to think that, like fast food, fast ideas are the way to get to
2 answers
857 views
Rxn 1: 4 NH3(g) + 5 O2(g) ⇌ 4 NO(g) + 6 H2O(g)
If the equilibrium constant, Kc, for Rxn 1 is 0.0015,
2 answers
600 views
which salt solution would have the highest ph and why
KI,KBr,KF,KCL or they all have the same ph. Im leaning towards KF since im
4 answers
2,366 views
what volume of .422 M NaOH must be added to .500L of .300 M acetic acid to raise its ph to 4.00
i know you have to use the
3 answers
2,349 views
Pages
1
2
3
4
