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Express the concentration of a 0.0700 M aqueous solution of fluoride, F-, in mass percentage and in part per million. Assume the
1. 1 answer
2. 1,115 views
1. The UV index on a sunny day can be modelled by the function y= -0.15(x-13)^2+7.6 , where x represents the time of day on a
1. 2 answers
2. 1,114 views
Factor: 27-(m+2n)^3I've tried it but my answer was incorrect.
1. 1 answer
2. 621 views
1. In works like "To Build a Fire," Naturalist writers such as Jack London advocated (Points : 5)trusting entirely in the wisdom
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2. 795 views
In the figure, xp and xt are opposite rays and xq bisects pxs. For each situation, provide the best possible answer.
1. 0 answers
2. 522 views
A space station Radar locates sattelites A and B at a certain moment:A_0=(a_1,0,1^3), B_0=(0,b_2,b_3) the space station is
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2. 516 views
Sarah is being chased down on the base paths during her softball game. What sport skill is she using most often as she goes back
1. 4 answers
2. 993 views
A car is traveling at a rate of 80 kilometers per hour. Set up the equation that would convert the speed to meters per second.
1. 1 answer
2. 913 views
a) A sprinter must average 24.0 mi/h to win a 100-m dash in 9.30 s. What is his wavelength at this speed if his mass is 84.5 kg?
1. 2 answers
2. 2,699 views
In a country where inflation is a concern, prices have risen by 50 % over a 3-year period.(a) By what percent B do the prices
1. 1 answer
2. 600 views
Write about why out think the Indians/Villagers may of invented the character of the Beast.
1. 2 answers
2. 372 views
The student wanted to be sure he had made Calcium Oxide. He crushed some heated limestone and added water. The mixture got hot.
1. 3 answers
2. 549 views
Which theme from Macbeth do these lines support?"This supernatural soliciting Cannot be ill, cannot be good. If ill, Why hath it
1. 1 answer
2. 1,854 views
If a bicycle wheel has traveled f/π feet after n complete revolutions, what is the length in feet of the diameter of the
1. 5 answers
2. 2,705 views
Al is twice as old as Bill, who is twice as old as Carl. In 10 years, Al will be twice as old as Carl. How old is Al now?A. 40
1. 2 answers
2. 1,813 views
3813.75 Joules of work is being done on a 150 lb object while it is moved 75 ft across a horizontal plane, what is the final
1. 1 answer
2. 489 views
I have a project due tomorrow and i cant find a good place to start. Cardiacmuscle disease is a disease that is a result of the
1. 0 answers
2. 547 views
Im researching a disease caused by a cellular organelle that does not function properly. My topic is "cardiamuscle disease" and
1. 0 answers
2. 504 views
Cosmetic surgery is more likely to lead to disappointment if a person is ________.A. Seeking surgery with the hope of
1. 1 answer
2. 544 views
estimate the value of a)4312 divided by 6 and b) 7134 divided by 82
1. 12 answers
2. 841 views
estimate 4825 x 63
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2. 390 views
estimate the value of 3268 x 7
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2. 610 views
express 8 divided by 12 as a frction
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2. 378 views
Danny bought 6 packets of drink. Each packet contained 1/4 liter of drink. Find the total amount of drinks in liters.
1. 2 answers
2. 522 views
Canadians are becoming more conscious of the importance of good nutrition, and some researchers believe that we may be altering
1. 1 answer
2. 1,184 views
X-rays can take pictures of your bones but visible light cannot. Explain why.Homework question, please and thank you!
1. 1 answer
2. 439 views
Some gardening books tell people to water their plants during the morning or the evening instead of during the sunniest ,
1. 2 answers
2. 436 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
1. 1 answer
2. 596 views
2. Explain how trusts, pools, holding companies, and communities of interest work to reduce competition and to introduce
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2. 1,497 views
A car of mass 900.0 kg accelerates away from an intersection on a horizontal road. When the car speed is 49.7 km/hr (13.8 m/s),
1. 1 answer
2. 1,654 views
Rewrite the sentences using nouns to replace the phrases in italics.Example: She writes books for a living. She is a writer. 1.
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2. 1,432 views
3. Radioactive decay of nuclei often involves several decays before a stable nucleus is formed. This is called a decay chain.
1. 1 answer
2. 1,144 views
For the following reaction, identify the substance oxidized, reduced and the oxidizing and reducing agents.2SO2 + O2 ----> 2SO3
1. 1 answer
2. 1,897 views
An airplane at 410 miles per hour at 40 degrees east of south is blown off course by a wind of 50 miles per hour at 25 degrees
1. 1 answer
2. 535 views
Use the equation for acceleration to determine the acceleration for the following motion.Time(s) 0 1 2 3 4 Velocity(m/s) 0 2 4 6
1. 1 answer
2. 455 views
Calculate the correct boiling point for nitrobenzene. Assume that a total immersion thermometer was used. The obs. boiling point
1. 1 answer
2. 891 views
If aqueous hydroﬂuoric acid is reacted with sodium hydroxide, which of the following substances are in the net ionic equation?
1. 1 answer
2. 896 views
A golfer takes two putts to get his ball intothe hole once he is on the green. The ﬁrst putt displaces the ball 9.6 m east,
1. 2 answers
2. 1,301 views
Janet jumps oﬀ a high diving platform witha horizontal velocity of 2.23 m/s and lands in the water 1.7 s later. How high is
1. 1 answer
2. 652 views
I'm embarrassed I can't figure this out on my own but I can't so here I am. I was giving these words and told to put them in "
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2. 511 views
What is the empirical formula of a compound that is 14 g calcium, 11 g oxygen, and 0.7 g hydrogen?A. CaO2H B. Ca2OH2 C. CaOH D.
1. 1 answer
2. 667 views
What mass of propane (C3H8) is needed to produce 346 g carbon dioxide in the following reaction?C3H8(g) + 5O2(g) -> 3CO2(g) +
1. 3 answers
2. 1,112 views
You need to prepare 100.0 mL of a pH=4.00 buffer solution using 0.100 M benzoic acid (pKa = 4.20) and 0.180 M sodium benzoateHow
1. 3 answers
2. 1,137 views
A control system is needed to alert an attendant for the following situation. Which of the following is the Boolean equation
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2. 515 views
Thinking in terms of a gate, how would you keep open a two-input OR gate? In other words, what should one of the lines be held
1. 1 answer
2. 424 views
The value 000001112 is sent to Port B of an Eblock system where an LED module is connected. Which LEDs are on?
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2. 352 views
A diode carries 20 mA with a 2.0 V forward voltage drop. What is the power dissipation?
1. 1 answer
2. 454 views
A resistive load of 2 k is connected across the secondary windings of a 25:1 transformer. If the primary voltage is 50 V AC,
1. 1 answer
2. 495 views
An op amp has a maximum output voltage swing of 10 Vpp and a voltage gain of 100. What is the largest peak to peak input signal
1. 1 answer
2. 598 views
A common collector amplifier without a bypass capacitor has RE = 1.5 kohms and RC = 2.1 k ohms and r'e = 17 ohms. The voltage
1. 2 answers
2. 394 views
If the resistance between the center and the outer terminal on a 20 k ohm potentiometer reads 12 k ohms, the resistance between
1. 0 answers
2. 1,056 views
A parallel circuit has value of RT = R1 // R2 // R3. If one resistor opens, RTRT increases?
1. 2 answers
2. 532 views
A parallel RL circuit has a reactance of 250 W and a resistance of 125 W. The phase angle of the circuit impedance is
1. 2 answers
2. 393 views
A high pass filter with a cutoff frequency of 250 kHz is placed in a circuit after a low pass filter with a cutoff frequency of
1. 2 answers
2. 663 views
If the period of an AC sine wave is 180 ms, the frequency is
1. 2 answers
2. 473 views
Determine the gain in dB for a filter that has an output power of 4.9 W and an input power of 3.6 mW.
1. 2 answers
2. 487 views
Determine the gain in dB for a filter that has an output power of 4.9 W and an input power of 3.6 mW.
1. 0 answers
2. 449 views
If a series RLC circuit has R = 25 ohm, XL = 50 ohms, and XC = 30 ohms, what will be the total impedance?
1. 2 answers
2. 3,370 views
A string of five series resistors is connected across a 20 v battery. Zero volts are measured across all the resistors except
1. 0 answers
2. 558 views
At the critical frequency, the output of a filter is down from its maximum by
1. 0 answers
2. 634 views
What is the power dissipated by resistor R1 of the following circuit: two batteries in series (with values V1 = 20 volts and V2
1. 2 answers
2. 2,323 views
Oxygen gas and hydrogen gas are used to synthesize dihydrogen monoxide. A lab group utilizes 1.00 liters of oxygen and 1.01
1. 1 answer
2. 540 views
Discuss the relationship between motion and force including the following terms: velocity, acceleration, equilibrium, contact
1. 1 answer
2. 1,057 views
Discuss the relationship between motion and force including the following terms: velocity, acceleration, equilibrium, contact
1. 0 answers
2. 1,110 views
c. Which of these electron configurations has the 4F term symbol for its ground state?p3 d3 d4 f2 f3
1. 0 answers
2. 377 views
A dipole of 1 Debye is equal to 3.33 x 10^-30 C m . Show that in atomic units 1 D = 0.39345 au.
1. 0 answers
2. 436 views
For the curve y = log(x+3)determine the following: a) asymptotes, if any. b) intercepts, if any. c) domain and range
1. 1 answer
2. 424 views
Another: theta is a second quadrant angle in standard position and tan theta = - (sqrt5)/(2) .Find the exact value of cos theta.
1. 2 answers
2. 794 views
Another: theta is a second quadrant angle in standard position and tan theta = - (sqrt5)/(2) .Find the exact value of cos theta.
1. 0 answers
2. 515 views
theta is a first quadrant angle in standard position and cos theta = 1/(sqrt10) .Find the exact value of sin theta,
1. 1 answer
2. 1,212 views
Why do we write radian measures with a π rather than just give the decimal equivalent? (for example, why not use 1.88 rad
1. 1 answer
2. 453 views
Why do we write radian measures with a π rather than just give the decimal equivalent? (for example, why not use 1.88 rad
1. 0 answers
2. 1,180 views
imgur[dot]com/jpORgtfThis is wayy to hard to type. What is the simplification of this question. Thanks.
1. 2 answers
2. 419 views
Hello,Is log_3 (5) equal to log_5 (3)? Explain your answer. Do not evaluate the logarithms. is my question. What is a surefire
1. 3 answers
2. 499 views
A golf ball with a mass of 50.3 g can be blasted from rest to a speed of 72.1 m/s during impact with a club head. Assume that
1. 0 answers
2. 456 views
A sled rope is held at an angle of 45 degrees with the horizontal ground. A force of 60 N acting parallel to the ground is
1. 1 answer
2. 1,298 views
For the simple harmonic oscillator determine:b. [Tˆ,Vˆ ]
1. 0 answers
2. 396 views
m trying to create an arraylist that's sorted but I have no idea how to sort the numbers. I cant use the array.sort method here
1. 1 answer
2. 584 views
Im trying to create an arraylist that's sorted but I have no idea how to sort the numbers. I cant use the array.sort method here
1. 0 answers
2. 535 views
A 0.10-mol sample of H2(g) and a 0.10-mol sample of Br2(g) are placed in a 2.0-L container. The reaction H2(g) + Br2(g) <----> 2
1. 0 answers
2. 818 views
The two strands of the helix-shaped DNA molecule are held together by electrostatic forces as shown in the Figure 16-44 in the
1. 1 answer
2. 2,179 views
2) An aircraft lands on a runway at a speed of 40 meters per second (ms^-1) and brakes to a halt in a distance of 860m.
1. 5 answers
2. 3,476 views
A 70 kg person stands on a 30 kg platform and pulls on a massless rope with a force of 400 N. The rope passes around a pulley
1. 2 answers
2. 1,091 views
What is the magnitude of the electric field 0.3 m from a 10-4 C point charge?
1. 1 answer
2. 318 views
Create a program that determine the shipping cost for an order based on the following table:From $0.00 $20.00 $50.00 $75.00 To
1. 1 answer
2. 1,143 views
How to balance the following equation:Na(s) + H2O(l) yields?
1. 1 answer
2. 446 views
Suppose you would like to cross a 200-foot wide river in a boat. Assume that the boat can travel 35 mph relative to the water
1. 1 answer
2. 943 views
Suppose you would like to cross a 209-foot wide river in a boat. Assume that the boat can travel 32 mph relative to the water
1. 2 answers
2. 1,047 views
A solar home contains 3.50 multiplied by 105 kg of concrete (specific heat = 1.00 kJ/kg·K). How much heat is given off by the
1. 0 answers
2. 608 views
(a) Suppose that on the moon an astronaut hit a golf ball so that it left his club at a speed of 45ms-1, at an angle of
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2. 537 views
differentiatef(x)=(1+sinˆ2x)ˆ6
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2. 399 views
differentiatef(x)=(sinˆ2x)/(cosx)
1. 2 answers
2. 417 views
Some of the cyclohexane solvent vaporized during the temperature versus time measurement. Will this loss of cyclohexane result
1. 3 answers
2. 1,863 views
Given the following statistical list:13,17,19,22,25,27,29,29,32,and 33. Assuming a desired "Confidence Level" of 95%, find the
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2. 1,011 views
A 140-W heater was placed in 2.00 kg of methanol and turned on for exactly 1 min. The temperature increased by 3.54°C. Assuming
1. 1 answer
2. 639 views
A 1.00 g sample of enriched water, a mixture of H2O and D2O, reacted completely with Cl2 to give a mixture of HCl and DCl. The
1. 1 answer
2. 940 views
A diver is working 10 feet below the surface of the water. The gap between the water and the deck of his support barge is 1/8 of
1. 1 answer
2. 566 views
A garage bought 55000 litres of petrol for 86 pence a litre and sold it for 96 pence a litre calculate how much garage paid for
1. 1 answer
2. 511 views
If W(p)is congruent to 0(mod p), then p is a Wilson Prime. Show that 5 and 13 are Wilson Primes.
1. 1 answer
2. 403 views
find the remainder when 13^16 + 17^12 is divided by 221.
1. 1 answer
2. 906 views

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