angy

meaning of input

18 years ago

Solid A of mass 50 kg resting on a smooth 45º incline is maintained in equilibrium by means of the light string passing over the pulley and holding at its other end a solid B of mass m. Make the inventory of the forces acting on A. Determine graphically t...

9 years ago

A potassium permanganate solution containing 1.58 g of KMnO4 per liter is added into 5 ml of an acidified iron (||) sulfate solution .Decolorizing of KMnO4 solution ceases when 10ml of the solution has been added. Calculate the mass of FeSo4.7H2O which ha...

9 years ago

Solve: Sin (x-pi/3)=1/2

9 years ago

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 kg.m^2 This disk is initially at rest is submitted to the action of a couple whose moment is equal to 0.2 N.m What's the number o...

9 years ago

A disk is rotating at 50rps (revolution per second) about its fixed axis (delta) with respect to which its moment of inertia is J= 2×10^-2 kg.m^2 A braking couple of moment -0.5N.m is applied to the disk (the sense of rotation of the disk is taken as posi...

9 years ago

When we are asked "What's the function of the paragraph of the reading text" How shall we answer it

9 years ago

For what purpose does the writer use short paragraphs

9 years ago

a) The combustion of an organic compound in the presence of excess oxygen produced a gas , which makes clear lime water turbid. What element can be identified? b) A sample of this compound is treated with hot molten sodium metal, the obtained mixture is d...

9 years ago

a) The combustion of an organic compound in the presence of excess oxygen produced a gas , which makes clear lime water turbid. What element can be identified?

9 years ago

What should be the magnitude of force F for the velocity of G to be constant?

9 years ago

Consider a simple pendulum consisting of a small marble of mass 10 g that can be onsidered a point mass suspended from the lower end of an inextensible string of length 80 cm and whose mass is negligible. The upperstring is connected to a fixed point O .T...

9 years ago

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), the oven is made to operate for 2 hours. Assuming the kitchen room is closed, what is the mole composition of the atmosphere in...

9 years ago

The chlorination of ethane gives a compound with the percent composition by mass of chlorine in the compound is 71.7% A) find the molecular formula of this compound B) write the condensed structural formulas of the isomers of this compound and give their...

9 years ago

Consider an isomeric mixture of alkenes of molar mass M=70g/mol. Determine the molecular formula of the alkenes. Hyrogenation of the isomeric mixture produces alkanes. What is the name of the alkane. If the alkenes in the original mixture are in equimolar...

9 years ago

Four identical positive charges q are placed at the four vertices of a square of side a. Determine the electric field: A) at the center of the square B) at te midpoint of one of its sides

9 years ago

Two equal positive charges q are placed at the opposite vertices of a square of side a. Determine and show on a diagram the electric field created by these three charges at the fourth vertex of the square. Thanks.

9 years ago

An electron is placed in a vertical electric field directed upward and of intensity E=5v/m. Compare the weight of the electron to the electrostatic force to which it is submitted. Deduce. Gravitational field strength: g=9.8m/s^2 Thanks.

9 years ago

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 electric spark. After cooling and condensing the vapor the volume of the gaseous mixture is 110cm^3 of which 80cm^3 causes turbidit...

9 years ago

How do we know which plate has an excess of electrons?

9 years ago

A parallel condenser of 0.8F is to be constructed using sheets of tin foil each 30cm.25cm and separated by a paraffin waxed paper 0.015cm thick of dielectric constant Find how many sheets of metals are required?

9 years ago

1-What are the characteristics of the benzene molecule and those of the obtained product(1,2,3,4,5,6-hexachlorocyclo hexane). 2-The volume of used chlorine Cl when added to benzene is 240cm^3. What minimal volume of benzene is needed so that all of chlori...

9 years ago

How do we explain: Why the pattern of organization is addition?

9 years ago

How do we know if the writer followed introduction body conclusion organizational pattern?

9 years ago

A capacitor A1B1 of capacitance C1=2microF is charged under a voltage U1=20V and then isolated. a) Calculate the voltage U (A1B1) between its plates, and it's charge Q1 and energy W1. b) The plates A1 and B1 are connected to those A2 and B2 of an uncharge...

9 years ago

How to write a research paper?

9 years ago

I've got a research paper about diamonds and I need to limit my topic about it . Can somebody tell me topics about diamonds please?

9 years ago

In 2011 a spots club offers its members three types of activities: volleyball basketball and tennis. Each member practices only one of the three activities:30% of the members practice volleyball, 20% of the members practice basketball, the rest of the mem...

9 years ago

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. -If a current 3I is sent in the coil the field strength at M becomes: a. 3B b. B/3 c. B -If the number of turns per unit length...

9 years ago

Two bar magnets (1) and(2) orthogonal to each other create at point M (intersection of their supports) the respective magnetic field vectors B1 and B2 of intensity: B1=o.oo3T and B2=0.004T a)Determine the names of the poles of the magnets. b)Construct the...

9 years ago

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 disease 85% are smokers. A man is selected at random from this town. Consider the events: D<<the selected man has a lung disease>...

9 years ago

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 exerted by the above mixture in a volume of 15 l at a temperature of 0ºc ? C) what is the partial pressure of each gas in the...

9 years ago

A straight line 1.8m long carries a current of 13A and make an angle of 15º with a uniform magnetic field B=1.5T Calculate the magnetic force on the wire. Do we use F=I×L×B×sin in order to solve or no

9 years ago

A straight horizontal sretch of copper wire carries a current of 28 A .What are the magnitude and direction of the magnetic field needed to float the wire that is to balance its weight? Linear density=46.6g/m

9 years ago

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 and direction of the current required to remove the tension in the supporting leads? Please also scroll down because I also ha...

9 years ago

Write the condensed structural formulas for the following alcohols."" Correct the incorrect names."" 4-methyl-1-pentanol 2-methyl-2-butanol 3-ethyl-1-butanol 2, 2-diethyl-4-pentanol 3-ethyl -2-hexanol IS THERE ANY WRONG NAMES??

9 years ago

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 of the gas is 1.6L measured at a temperature of 22ºc and under a pressure of 1 bar. a- What gas is released in this reaction, h...

9 years ago

Two compounds of molecular formula respectively C2H4O and C4H8O produce a yellow orange precipitate by the reaction DNPH. a)is this indication sufficient to write the structural formulas of these two compounds? Explain. b)what identification tests should...

9 years ago

A homologous rod of mass M=20kg of length L=3m and of negligible cross-section rests initially on the horizontal ground chosen as a reference level for the gravitational potential energy. The rod is rotated about one end until it takes a vertical position...

9 years ago

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 reference level of the gravitational potential energy .Neglect all air effects. a) Calculate the mechanical energy of the syste...

9 years ago

A puck is released on an air table inclined by 0.1rd with respect to horizontal. By applying the principle of conservation of the mechanical energy of the system ,calculate the velocity of the puck after 40 cm journey along a line of greatest slope.

9 years ago

2NO+O2->2NO2 a) During a certain interval of time the variation of oxygen O2 moles is -5mol. Calculate the variation of the number of moles of nitrogen monoxide NO and that of nitrogen dioxide NO2 during the same interval of time. b) The duration during w...

9 years ago

Z=2e^(ipi/4) What will the conjugate be ? - Z=?

9 years ago

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 the linear momentum of the center of mass of Earth. b) Is this linear momentum conseved?

9 years ago

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 skaters hold together and move as one system (S) with a speed V. a) Determine V. b) Determine the kinetic energy of (S) before a...

9 years ago

An object initially at rest on a horizontal OX axis explodes into two pieces . One piece moves just after explosion along the axis OX with a speed of 6m/s. What are the direction and the magnitude of the velocity of the second piece whose mass is three ti...

9 years ago

How do we do integral (5cos4x cos8x dx)

9 years ago

A loop of surface area s1=10cm^2 placed ina uniform magnetic field Bof magnitude B1=8×10^-2T, has its plane perpendicular to the field lines . A second loop of area s2=15cm^2 is placed in another uniform field B2 of magnitude B2=0.1T such that its normal...

8 years ago

A magnetic flux through a circuit increases linearly with time, then the absolute value of the induced e.m.f A) increases because the flux is increasing B) decreases because according to Lenz's law it opposes the original increase of the flux C) stays the...

8 years ago

At 25ºC and 1 atmosphere the following equilibrium is eatablished : 2NO (g) <=> N2O4 (g) The partial equilibrium pressure of N2O4 is 0.7 atm. A) calculate Kp of the above system at 25ºC. B) calculate the partial pressure of the above two gases at equilibr...

8 years ago

A bottle of commercial hydrochloric acid solution So is labeled 37% composition by mass, density 1.19 kg/L. Calculate the concentration of solution So. 4.2 ml of So are diluted to 500ml solution called S. We titrate S with 200 ml of KOH solution of 3×10^-...

8 years ago

Hydrochloric acid solution reacts with zinc according to the following equation: 2H3O + Zn -> Zn^2+ + H2 +2H2O 100ml of hydrochloric acid solution Ca=0.5mol/l must be prepared from C=5mol/l hydrochloric solution. 1) Specify the glassware needed for this p...

8 years ago

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 available materials are given below: ● Volumetric pipet: 5ml, 10ml, 20ml ● Beakers: 100ml, 250ml, 500ml ● volumetric flask : 10...

8 years ago

We have 1L of 0.1mol/l solution of ammonium chloride, with pKa 9.2 for NH4+/NH3 Place in an increasing order on a pKa axis the different conjugate acid /base pairs present in the solution. Write the equation of the different reactions that may take place

8 years ago

A monochromatic light of wavelength 587.5nm illuminates a slit of width 0.75mm. At what distance from the slit should a screen be placed so that the first dark fringe is at 0.85mm from the center of the diffraction pattern?

8 years ago

A screen is placed 50cm away from a slit lit by a monochromatic light of wavelength 690nm. The distance seperating the first dark fringe and the third dark fringe in the diffraction pattern is 3mm. Calculate the width of the slit.

8 years ago

The alcoholic fermentation of350 g/l glucose syrup ceases when the alcoholic degree of the mixture attains 16º (16ml ethanol in 100ml of the solution) Write the reaction of the fermentation reaction. Consider the fermentation of 100L of the glucose syrup....

8 years ago

1. How many monochlorinated compounds of molecular formula C3 H7 Cl can be made by chlorinating propane?

8 years ago

2. Write equations illustrating three reactions of alkenes, using 1-hexene as an example.

8 years ago

what is the charge on each of the followin amino acid at physiologic pH: glutamate lysine valine tyrosine histidine

7 years ago

Pleasee help i am really stuck A beachgoer leaves a pair of sandals on the shore while she swims. When she puts the sandals on again, the bottom of her feet will feel hot because _____. Choose all that apply.

7 years ago

A room has 2 sections as shown in the picture below. Which expression uses the Distributive Property to find the total area of the room? the picture is a rectangle in the first section there us the number in the left side 14 in the bottom side 8 and in th...

7 years ago

please help me!!!!!!!!!!! Identify if the first number is divisible by the second number, and if so, the reason why. Is 26 divisible by 2? A. No B. Yes, because 2 + 6 = 8 and 8 is divisible by 2. C. Yes, because the last digit is 6, which is divisible by...

7 years ago

can somebody help me to check my answer Identify if the first number is divisible by the second number, and if so, the reason why. Is 216 divisible by 3? A. No B. Yes, because the sum of 2 + 1 + 6 = 9, which is divisible by 3. C. Yes, because the last dig...

7 years ago

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 factors are prime numbers. D. It is not divisible by any number except one and itself. I PICKED b

6 years ago

Malcoln Mcconnell Name of text This Machine Could Save Your Life

9 years ago

O |\ | \B | A

9 years ago

You could pick any superheroes that you like For example:flash, robin, superman, deadpool....

9 years ago

Yes they are movies and part of comics books

9 years ago

You could go to wikipedia and search for Superhero live-action television series I tried to paste the link but it didn't work

9 years ago

crept is a verb three and slimy are adjectives snail is a noun nearby is an adverb

9 years ago

Sorry I missed a sentence A charge -q is placed at the third vertex

9 years ago

3x

9 years ago

but the C is given

9 years ago

I guess we don't need to find the capacitance

9 years ago

It's between two paragraphs

9 years ago

I think you're mistaken

9 years ago

How

9 years ago

it depends on the values of the graph and using correct formula

9 years ago

It's physics

8 years ago

SOOooooo what is the right answer????!

7 years ago

all that I know is that: A vacuum flask keeps its contents warmer or cooler than the surrounding environment for a length of time. It consists of two flasks, one inside the other, that connect at the neck. The space between the two flasks is completely em...

7 years ago

hey thank you I am stuck with this test for 2 hours even though I am a 6 grader but i am reallyyyyyyyyyyyyyyyyyyyy busy . 100% Yayyyyyy

7 years ago

Thank you your the best

7 years ago

i am using connexus or snowline

7 years ago

I have a question in science A beachgoer leaves a pair of sandals on the shore while she swims. When she puts the sandals on again, the bottom of her feet will feel hot because of _____. Choose all that apply.

7 years ago

pleaseee help me I am stuck with this for 20 minutes!!!!!!!

7 years ago

A. the sandals were warmed by radiation B. heat will transfer to her feet by radiation C. heat will transfer away from her feet by conduction D. heat will transfer to her feet by conduction i picked a and d

7 years ago

i think it is c

7 years ago

thankyouuuuuuuuuuuuu!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

7 years ago

what is the answer

7 years ago

coolllllllllllll thanks

7 years ago

please help me

7 years ago

it does have to do with the area

7 years ago

nobody cares

7 years ago

I can get Jim I have the same question but different numbers he trying to say how tall the plant has grown from now to the last time the gardener checked it i think you have to subtract 60 - 52 and you will get your answer

7 years ago

is it reasonable i think so because 6 is a divisible of 2 and so is 2

7 years ago

plus 6 is divisible by 3 i think

7 years ago

what the heck the last two numbers are 16 not 26

7 years ago

that makes sense scott

7 years ago

so 26 is divisible by 3

7 years ago

thanks!

6 years ago

Pleaseeeeee help i don't want to be late to brand practice!!

6 years ago

i know i am annoying but pleaseeeeeeeeeeee helppppppppppppppp!!!!!!!

6 years ago