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1.71 kg of glass (ρ = 2.66 x 10^3 kg/m3) is shaped into a hollow spherical shell that just barely floats in water. What are the
1. 2 answers
2. 1,012 views
The sugar concentration in a solution (e.g., in a urine specimen) can be measured conveniently by using the optical activity of
1. 0 answers
2. 654 views
The sugar concentration in a solution (e.g., in a urine specimen) can be measured conveniently by using the optical activity of
1. 0 answers
2. 691 views
Ten meter long steel railroad rails are laid end to end, with no space between, on a hot day when the temperature is 115°F. Six
1. 0 answers
2. 679 views
Ten meter long steel railroad rails are laid end to end, with no space between, on a hot day when the temperature is 115°F. Six
1. 0 answers
2. 680 views
An elephant can hear sound with a frequency of 15.0 Hz. What is the wavelength of this wave? The speed of sound in air is 343
1. 2 answers
2. 788 views
In a particle accelerator, a proton reaches an acceleration of 9.0 × 1013 m/s2. The mass of a proton is 1.7 × 10 -27 kg. What
1. 1 answer
2. 2,048 views
A typical cell membrane is 8.0 nm thick and has an electrical resistivity of 1.3 × 107Ω.m.(i) If the potential difference
1. 1 answer
2. 2,248 views
Suppose you add a small ice cube to room temperature water in a coffee cup calorimeter. What is the final temperature when all
1. 1 answer
2. 925 views
4 years ago my father's age was 4 times that of my age. At present the sum of my father's age and that of mine is 53 years .
1. 2 answers
2. 2,203 views
A washing machine drum has a diameter of 46 cm and spins at 400 revolutions per minute. Find the centripetal acceleration at the
1. 0 answers
2. 707 views
The mass of the Earth=Mg=5.97x10^24 kg. The radius of the Earth=RE= 6.38 x10^6 m.A) What is the weight of the 75 kg person? B)
1. 0 answers
2. 714 views
Checking the weather. 60% chance of rain at the bears football game. In the past, when it rains, bears win ,44% of the time and
1. 1 answer
2. 507 views
1. What solar temp is needed for the peak intensity of radiation to occue at .2 micrometers? Remembering that humans can see
1. 2 answers
2. 579 views
A solution made up of 1.00 M NH3 and 0.500 M (NH4)2SO4 has a pH of 9.26.a. Write the net ionic equation that represents the
1. 6 answers
2. 1,922 views
there are 9 blue marbles, 4 black marbles, 5 white marbles and 6 red marbles. If the probability of drawing a blue marble is now
1. 1 answer
2. 1,706 views
A bus tour company charges a flat fee for renting out the bus, and an additional amount for each person. If the price is quoted
1. 1 answer
2. 715 views
which of these reactions if spontaneous?(a) Fe^0 + Mg +2 --> Mg^0 +Fe+2 (b) Fe+2 + Mg ^0 --> Fe^0 + Mg +2 write the half cell
1. 1 answer
2. 799 views
In relation to game AI what is a flocking behaviour? Give anexample of flocking behaviour in a game.
1. 1 answer
2. 557 views
Use the given information to evaluate sin (a+b). Exact answers only. No decimals.Tan a = 4/3, cos b ='-12/13; neither a nor b
1. 0 answers
2. 473 views
A girl throws a ball at a fence 10m away. The ball is 2m from the ground when itleaves her hand with an initial velocity of v=8
1. 1 answer
2. 716 views
In a study of 200 students, 42 were found to have a GPA greater than 3.0. Find a98% confidence interval estimate of the
1. 1 answer
2. 655 views
A block of mass M1positioned on a slope (at an angle  ) is connected bymeans of an inextensible wire, of negligible mass, to
1. 2 answers
2. 663 views
A force platform is a tool used to analyze the performance of athletes measuring the vertical force that the athlete exerts on
1. 0 answers
2. 870 views
An astronaut of mass 84.0 kg is taking a space walk to work on the International Space Station. Because of a malfunction with
1. 0 answers
2. 687 views
Most of us know intuitively that in a head-on collision between a large dump truck and a subcompact car, you are better off
1. 0 answers
2. 971 views
A particular garden hose has an inside diameter of 15/16 in. The nozzle opening has a diameter of 5/16 in. When the flow speed
1. 0 answers
2. 583 views
A spherical hydrogen-filled balloon is used to lift a load of 5950 N (in addition to the weight of the hydrogen). Suppose the
1. 0 answers
2. 681 views
A hollow copper tube (diameter = 4.01 cm) is sealed at one end and loaded with lead shot to give a total mass of 0.218 kg. When
1. 1 answer
2. 609 views
A 4.8 kg container of water sits on a scale A. A cube of aluminum with sides of length 11.0 cm is suspended from a spring scale
1. 0 answers
2. 701 views
Let y=3(x-4)^2 -3a) Show that y=3x^2 -24x +45 b) For the graph of y find both x intercepts by solving the equation 3x^2 -24x +45
1. 1 answer
2. 631 views
A person travels 8 mi, due north, 3 mi, due west and 7 mi due south how far are they from were they started?
1. 1 answer
2. 582 views
The figure below shows a block of mass m resting on a 20¡ã slope. The block has coefficients of friction ¦Ìs = 0.73 and
1. 1 answer
2. 3,663 views
Can someone help me with, the book "Invisible Man" and which character wore the mask.
1. 5 answers
2. 475 views
A solution of NaOH (aq) contains 8.2 grams of NaOH(s) per 100.0 mL of solution. Calcualte Ph and POH at 25 degrees celsiuis
1. 1 answer
2. 1,745 views
Calcualte PH and POh of an aqueous solution that is 0.050 M in HCL and 0.085 M in HBr at 25 degrees C
1. 1 answer
2. 989 views
I have to create two dice (each on has six sides) they have to be numbered in such a way that the probability of rolling the
1. 0 answers
2. 503 views
A road map has a scale of 5/8 for every 125 miles. How many inches would be needed to represent 1000 miles on the map?
1. 3 answers
2. 614 views
An electron is accelerated by a uniform electric field (1000 V/m) pointing vertically upward. Use energy methods to get the
1. 1 answer
2. 2,122 views
A current loop with radius 20 cm and current 2 A is in a uniform magnetic field of 0.5 T. Considering all possible orientations
1. 2 answers
2. 644 views
A current of 20 mA flows in a single circular loop with a radius of 2 meters. A uniform magnetic field of 1.2 T points parallel
1. 1 answer
2. 599 views
An irrigation pump can pump 250 liters of water per minute. How many hours should the system work to water a rectangular ﬁeld
1. 1 answer
2. 642 views
Find the points of intersection of the parabolas y=1/2x^2 and y=1-1/2x^2. Show that at each of these points the tangent lines to
1. 1 answer
2. 532 views
I have done this so many way and can't seen to get the right answer please help!I'm looking for the Concentration of NiCl2, M
1. 1 answer
2. 385 views
A 57.0 kg diver dives from a height of 15.0 m. She reaches a speed of 14.0 m/s just before entering the water. What was the
1. 0 answers
2. 667 views
the average american drinks 29 more cokes per year than the average mexican. if together they consume 555 cokes per year how
1. 1 answer
2. 441 views
Identify the facilities and amenities of disney cruise lines.
1. 3 answers
2. 508 views
A 2.0 micro Farad capacitor in a circuit in series with a resistance of 1.0 mega ohms is charged with a 6.0v battery. How long
1. 1 answer
2. 1,035 views
Show that the time for the voltage in the RC circuit to rise to (Vo/2) "half-max" is t1/2 = T ln 2
1. 1 answer
2. 1,071 views
With V = Voe^-(t/T), how many time constants does it take for a capacitor to discharge less than 1% of its initial voltage?
1. 1 answer
2. 770 views
What is the voltage across a capacitor after a time of two constants when a. charging from zero voltage and b. discharging from
1. 1 answer
2. 2,950 views
Show that the magnitude of the charge on a capacitor is given by Q = (Qo(1-e^-(t/T))) and Q = Qoe^-(t/T) for charging and
1. 1 answer
2. 1,105 views
Why there is a need for reception facities for ship operation inside the 50 called special areas?
1. 0 answers
2. 326 views
If 5.300 g of C6H6 is burned and the heat produced from the burning is added to 5691 g of water at 21 °C, what is the final
1. 1 answer
2. 1,032 views
A car accelerates uniformly from rest to aspeed of 23.9 km/h in 8.2 s. Find the distance it travels during this time. Answer in
1. 0 answers
2. 381 views
A rectangle has a length of 4x and a width of 4x-2. its perimeter is 12 inches find the length and width
1. 1 answer
2. 568 views
A plane is flying horizontally at a speed of 290m/s. He drops a package (ignoring air resistance).A)If it take 15s for the
1. 1 answer
2. 873 views
Typically, a tennis ball hit during a serve travels away at about 51 m/s. If the ball is at rest mid-air when struck, and it has
1. 4 answers
2. 5,322 views
A 1000-kg car whose motor delivers a maximum power of 40.0 hp to its wheel can maintain a steady speed of 130 km/h on a
1. 0 answers
2. 818 views
a driver of a 1200-kg car notices that the car slows from 20 m/s to 15 m/s as it coasts a distance of 130 m along level ground.
1. 1 answer
2. 1,778 views
An AC voltage with 169 peak volts is applied across a 506 ohm resistor. To the nearest tenth of a watt, what is the average
1. 1 answer
2. 520 views
You are on an archaeological dig and discover a strange artifact. It is a utensil that appears to be carved out ofan elephant's
1. 1 answer
2. 532 views
Charge A has a charge of +2C. Charge B has a charge of -3C and is located 1 meter to the right of A. Charge C is located 1 meter
1. 1 answer
2. 649 views
When a cannon with a longer barrel is fired, the force of expanding gases acts on the cannonball for a longer distance. What
1. 1 answer
2. 753 views
An iorn rod (a=11.8 x 10^-6 C^-1) has a length of 1000 meters(or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to
1. 1 answer
2. 441 views
An iorn rod (a=11.8 x 10^-6C^-1) has a length of 1000 meters(or 1 km) at 0 degrees Celsius. If the rod must expand 10 cm to
1. 0 answers
2. 485 views
A boat is constructed in the shape of a rectangular cube. The base of the boat is 2m by 3m and the side of the boat is 2m high.
1. 2 answers
2. 582 views
A ball is rolled off a table that is 0.481 m above the floor. The ball is rolling with a velocity if 1.8 m/s as it goes off the
1. 1 answer
2. 1,442 views
The femur of a human leg (mass 10 kg, length 0.9 m) is in traction, as shown in the figure below. The center of gravity of the
1. 1 answer
2. 2,815 views
calculate the rate constant at 225C for a reaction that has a rate constant of 8.1X10^-4 at 95c and an activation enegry of 93.0
1. 2 answers
2. 2,144 views
1. The following data was collected for the reaction between hydrogen and nitrogen monoxide. The timerecorded corresponds to a
1. 0 answers
2. 821 views
I just wanted to see if my answers made sense.1. What effect would each of the following have on your calculated value of Kf
1. 0 answers
2. 866 views
if the surface area of a sphere is given by the formula SA=4pir^2, find the rate of increase of the surface area if the radius
1. 1 answer
2. 790 views
find the antiderivative of f(x)=(x^2)/(x^3+5) with explanation
1. 1 answer
2. 351 views
Suppose that in the past, 94% of all Hispanic grocery shoppers were women. Perhaps due to changing cultural values, we believe
1. 3 answers
2. 1,319 views
Every point (x,y) on the curve y = \log_{2}{3x} is transferred to a new point by the following translation (x',y') =(x+m,y+n),
1. 0 answers
2. 489 views
Given \tan \theta = -\frac{4}{3}, where \frac{\pi}{2} < \theta < \pi, what is the value of \frac{1}{\sin \theta + \cos \theta}?
1. 1 answer
2. 2,584 views
The vertices of a regular 10-gon are labeled V_1, V_2, \ldots V_n, which is a permutation of \{ 1, 2, \ldots, 10\}. Define a
1. 0 answers
2. 1,096 views
ABCD is a trapezoid with AB < CD and AB parallel to CD. \Gamma is a circle inscribed in ABCD, such that \Gamma is tangent to all
1. 1 answer
2. 644 views
Please help me with matching the stages of the meiosis to its proper description.Sentences: 1. Members of each homologous pair
1. 1 answer
2. 1,075 views
Use your knowledge of income statements to fill in the missing items:Sales Cost of goods sold $575,000 Gross profit $1,600,000
1. 0 answers
2. 850 views
Use the “balance sheet equation” to determine owners’ equity if liabilities are $5 million and assets are $10 million.Asse
1. 1 answer
2. 766 views
What is the absolute entropy of 2.5 mol of gaseous methane at 1.3 bar and 298 K?
1. 1 answer
2. 514 views
If the adverage weight of a human body is 75kg and given the mass of the earth is 5976 x 10^21kg, how many people will it take
1. 1 answer
2. 532 views
In terms of energy, the general chemical equation AB+CD+energy = AD+CB represents a (an)_________ reaction.
1. 1 answer
2. 891 views
What elements of the Restoration comedy are seen in The Importance of Being Earnest?
1. 4 answers
2. 3,165 views
The 50 kg cylinder shown, which was initially at rest, rolls without slipping. when the speed of A is 20 cm\s, the speed of
1. 0 answers
2. 1,058 views
Determine the size of the M1 money supply using the following information.Currency $700 billion Money market mutual funds $2,000
1. 23 answers
2. 1,069 views
15^(-x-3)=-17^(-3x) using a log base 10
1. 0 answers
2. 366 views
Is the following simple, compound, comples, or compound complex sentences?The shopping mall has a store that sells nothing but
1. 11 answers
2. 1,503 views
How many moles of Br2 are present in 500mL of vapor when Br2(l) and Br2(g) are in equilibrium at 33 degrees celcius? (Pvap Br2
1. 1 answer
2. 631 views
find the limitu-> sqr(u^4 + 3u+ 6)
1. 0 answers
2. 326 views
Methane and Hydrogen Sulfide react at 960 degree Celsius and come to the following equilibriumCH4(g)+2H2S(g) <-> CS2(g)+ 4H2(g)
1. 3 answers
2. 554 views
Why do I keep getting a Type Mismatch error on this line? Also, when i click "View" to view my output screen its blank, so
1. 0 answers
2. 482 views
The following is a list of salaries of the six employees in a certain company:Name Salary T. Angel $43,000 F. Smith $31,000 K.
1. 2 answers
2. 1,011 views
What is the speed of sound in a medium where a 100-kHz frequency produces a 5.96-cm wavelength?
1. 1 answer
2. 1,747 views
What is the sound intensity level in decibels of ultrasound of intensity 10^5 W/m2, used to pulverize tissue during surgery
1. 1 answer
2. 668 views
What sound intensity level in dB is produced by earphones that create an intensity of 4.00¡¿10^-2 W/m^2?
1. 0 answers
2. 801 views
What is the intensity in watts per meter squared of 85.0 db sound?
1. 3 answers
2. 1,522 views
what was the formal name for our country?
1. 1 answer
2. 367 views

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