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angy

Questions and answers by angy

Questions (74)

meaning of input
1. 1 answer
2. 304 views
Solid A of mass 50 kg resting on a smooth 45º incline is maintained in equilibrium by means of the light string passing over
1. 1 answer
2. 472 views
A potassium permanganate solution containing 1.58 g of KMnO4 per liter is added into 5 ml of an acidified iron (||) sulfate
1. 4 answers
2. 2,034 views
Solve:Sin (x-pi/3)=1/2
1. 1 answer
2. 386 views
A disk is free to rotate around its fixed axis of revolution (delta). The moment of inertia of disk around delta is J=4×10^-2
1. 2 answers
2. 605 views
A disk is rotating at 50rps (revolution per second) about its fixed axis (delta) with respect to which its moment of inertia is
1. 2 answers
2. 532 views
A disk is rotating at 50rps (revolution per second) about its fixed axis (delta) with respect to which its moment of inertia is
1. 2 answers
2. 553 views
When we are asked "What's the function of the paragraph of the reading text"How shall we answer it
1. 3 answers
2. 429 views
For what purpose does the writer use short paragraphs
1. 4 answers
2. 465 views
a) The combustion of an organic compound in the presence of excess oxygen produced a gas , which makes clear lime water turbid.
1. 2 answers
2. 557 views
a) The combustion of an organic compound in the presence of excess oxygen produced a gas , which makes clear lime water turbid.
1. 2 answers
2. 599 views
a) The combustion of an organic compound in the presence of excess oxygen produced a gas , which makes clear lime water turbid.
1. 3 answers
2. 669 views
What should be the magnitude of force F for the velocity of G to be constant?
1. 2 answers
2. 606 views
Consider a simple pendulum consisting of a small marble of mass 10 g that can be onsidered a point mass suspended from the lower
1. 4 answers
2. 634 views
The bottled butane gas is installed in an oven that can supply 0.125 g/hr .In a kitchen room of volume 32 m^3 (volume of air),
1. 2 answers
2. 542 views
The chlorination of ethane gives a compound with the percent composition by mass of chlorine in the compound is 71.7%A) find the
1. 3 answers
2. 1,044 views
Consider an isomeric mixture of alkenes of molar mass M=70g/mol. Determine the molecular formula of the alkenes.Hyrogenation of
1. 4 answers
2. 1,787 views
Four identical positive charges q are placed at the four vertices of a square of side a. Determine the electric field:A) at the
1. 4 answers
2. 1,386 views
Four identical positive charges q are placed at the four vertices of a square of side a. Determine the electric field:A) at the
1. 3 answers
2. 1,009 views
Two equal positive charges q are placed at the opposite vertices of a square of side a. Determine and show on a diagram the
1. 3 answers
2. 552 views
An electron is placed in a vertical electric field directed upward and of intensity E=5v/m.Compare the weight of the electron to
1. 2 answers
2. 577 views
In an eudiometer 20cm^3 of a gaseous hydrocarbon A is mixed with 150 cm^3 of oxygen. The combustion of A is initiated by an
1. 4 answers
2. 551 views
In an eudiometer 20cm^3 of a gaseous hydrocarbon A is mixed with 150 cm^3 of oxygen. The combustion of A is initiated by an
1. 3 answers
2. 759 views
How do we know which plate has an excess of electrons?
1. 5 answers
2. 507 views
A parallel condenser of 0.8F is to be constructed using sheets of tin foil each 30cm.25cm and separated by a paraffin waxed
1. 4 answers
2. 487 views
1-What are the characteristics of the benzene molecule and those of the obtained product(1,2,3,4,5,6-hexachlorocyclo hexane).2-T
1. 2 answers
2. 540 views
1-What are the characteristics of the benzene molecule and those of the obtained product(1,2,3,4,5,6-hexachlorocyclo hexane).2-T
1. 1 answer
2. 447 views
How do we explain:Why the pattern of organization is addition?
1. 3 answers
2. 354 views
How do we know if the writer followed introduction body conclusion organizational pattern?
1. 2 answers
2. 547 views
A capacitor A1B1 of capacitance C1=2microF is charged under a voltage U1=20V and then isolated.a) Calculate the voltage U (A1B1)
1. 4 answers
2. 628 views
How to write a research paper?
1. 1 answer
2. 366 views
A board of 4 members is going to be formed from the 30 students of a class. The board is formed of: a president a vice president
1. 1 answer
2. 457 views
I've got a research paper about diamonds and I need to limit my topic about it . Can somebody tell me topics about diamonds
1. 1 answer
2. 454 views
In 2011 a spots club offers its members three types of activities: volleyball basketball and tennis.Each member practices only
1. 1 answer
2. 617 views
1)A coil of length 1cm has N turns and carries an electric current I. It creates at a point M a magnetic field of intensity B.-I
1. 1 answer
2. 416 views
Two bar magnets (1) and(2) orthogonal to each other create at point M (intersection of their supports) the respective magnetic
1. 2 answers
2. 511 views
in a certain town 40% of men are smokers. It is known that 6% of men in this town have lung disease. Of those men having lung
1. 1 answer
2. 442 views
1)A coil of length 1cm has N turns and carries an electric current I. It creates at a point M a magnetic field of intensity B.-I
1. 1 answer
2. 439 views
A) what is the molar fraction of each gas in a mixture of 6g of hydrogen H2 and 7g of nitrogen N2 ?B) what is the total pressurd
1. 3 answers
2. 665 views
A straight line 1.8m long carries a current of 13A and make an angle of 15º with a uniform magnetic field B=1.5TCalculate the
1. 2 answers
2. 689 views
A straight horizontal sretch of copper wire carries a current of 28 A .What are the magnitude and direction of the magnetic
1. 4 answers
2. 1,152 views
A wire of 62cm length and mass 13g is suspended by a pair of flexible leads in a magnetic field of 0.44T. What are the magnitude
1. 2 answers
2. 825 views
Write the condensed structural formulas for the following alcohols."" Correct the incorrect names.""4-methyl-1-pentanol
1. 4 answers
2. 985 views
A) 9.8g of an alcohol A completely reacts with an excess of sodium , and a gas is released. When the reaction ceases the volume
1. 2 answers
2. 667 views
A) 9.8g of an alcohol A completely reacts with an excess of sodium , and a gas is released. When the reaction ceases the volume
1. 2 answers
2. 657 views
Two compounds of molecular formula respectively C2H4O and C4H8O produce a yellow orange precipitate by the reaction DNPH.a)is
1. 2 answers
2. 550 views
A homologous rod of mass M=20kg of length L=3m and of negligible cross-section rests initially on the horizontal ground chosen
1. 2 answers
2. 836 views
A particle B of mass 10g is shot vertically upward from a point O with velocity 10m/s. The horizontal plane containing O is the
1. 1 answer
2. 453 views
A puck is released on an air table inclined by 0.1rd with respect to horizontal. By applying the principle of conservation of
1. 2 answers
2. 1,066 views
2NO+O2->2NO2a) During a certain interval of time the variation of oxygen O2 moles is -5mol. Calculate the variation of the
1. 1 answer
2. 463 views
Z=2e^(ipi/4)What will the conjugate be ? - Z=?
1. 4 answers
2. 2,203 views
Earth of mass 6×10^24 kg is in motion around the sun with a linear velocity of magnitude 30 km/s.a) Determine the magnitude of
1. 3 answers
2. 664 views
Consider a stationary skater of mass 60 kg. Another skater of mass 40kg rushes and holds the first at a speed of 12km/hr. Both
1. 4 answers
2. 1,059 views
An object initially at rest on a horizontal OX axis explodes into two pieces . One piece moves just after explosion along the
1. 3 answers
2. 867 views
How do we do integral (5cos4x cos8x dx)
1. 1 answer
2. 390 views
A loop of surface area s1=10cm^2 placed ina uniform magnetic field Bof magnitude B1=8×10^-2T, has its plane perpendicular to
1. 2 answers
2. 563 views
A magnetic flux through a circuit increases linearly with time, then the absolute value of the induced e.m.fA) increases because
1. 4 answers
2. 727 views
At 25ºC and 1 atmosphere the following equilibrium is eatablished :2NO (g) <=> N2O4 (g) The partial equilibrium pressure of
1. 1 answer
2. 525 views
At 25ºC and 1 atmosphere the following equilibrium is eatablished : 2NO (g) <=> N2O4 (g) The partial equilibrium pressure of
1. 2 answers
2. 601 views
A bottle of commercial hydrochloric acid solution So is labeled 37% composition by mass, density 1.19 kg/L.Calculate the
1. 2 answers
2. 714 views
Hydrochloric acid solution reacts with zinc according to the following equation:2H3O + Zn -> Zn^2+ + H2 +2H2O 100ml of
1. 2 answers
2. 664 views
A hydrochloric acid So of concentration 1mol/l and a solution S1 of concentration C1= 2×10^-2 mol/l to be prepared from So. The
1. 1 answer
2. 509 views
We have 1L of 0.1mol/l solution of ammonium chloride, with pKa 9.2 for NH4+/NH3Place in an increasing order on a pKa axis the
1. 2 answers
2. 516 views
A monochromatic light of wavelength 587.5nm illuminates a slit of width 0.75mm. At what distance from the slit should a screen
1. 2 answers
2. 1,267 views
A screen is placed 50cm away from a slit lit by a monochromatic light of wavelength 690nm. The distance seperating the first
1. 2 answers
2. 591 views
The alcoholic fermentation of350 g/l glucose syrup ceases when the alcoholic degree of the mixture attains 16º (16ml ethanol in
1. 2 answers
2. 570 views
1. How many monochlorinated compounds of molecular formula C3 H7 Cl can be made by chlorinating propane?
1. 1 answer
2. 358 views
2. Write equations illustrating three reactions of alkenes, using 1-hexene as an example.
1. 3 answers
2. 530 views
what is the charge on each of the followin amino acid at physiologic pH:glutamate lysine valine tyrosine histidine
1. 1 answer
2. 418 views
Pleasee help i am really stuckA beachgoer leaves a pair of sandals on the shore while she swims. When she puts the sandals on
1. 7 answers
2. 2,519 views
A room has 2 sections as shown in the picture below. Which expression uses the Distributive Property to find the total area of
1. 12 answers
2. 3,152 views
please help me!!!!!!!!!!!Identify if the first number is divisible by the second number, and if so, the reason why. Is 26
1. 3 answers
2. 896 views
can somebody help me to check my answerIdentify if the first number is divisible by the second number, and if so, the reason
1. 39 answers
2. 5,434 views
Why is 25 a composite number??Pleaseeeee help me!!!!!!!!!!!!!1 A. It is odd. B. It has more than two factors. C. All of its
1. 6 answers
2. 1,425 views

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