Sandhya

This page lists questions and answers that were posted by visitors named Sandhya.

Questions

The following questions were asked by visitors named Sandhya.

1. What is the best way to determine levelness? Plot Position versus Time and compare the linear fit from each direction of travel; slopes should be equal. See if the Acceleration versus Time for both directions are both zero. Plot the Acceleration versus...

17 years ago

Do circular electric lines of force exist ? why? what about magnetic lines of force? Pl help

17 years ago

For a L-C-R circuit Vin = v0*expjwt. Vout is taken across R a) Calculate the impedance of the circuit measured from the input side. Express the impedance in polar form. b) Calculate the gain=Vout/Vin and express the ratio in polar form. c) Sketch the ampl...

17 years ago

1. A ball is projected horizontally from the edge of a table that is 4.0 meters high, and strikes the floor at a point 3.0 meters from a point on the floor directly below the edge of the table. The initial velocity of the ball as it is projected from the...

17 years ago

1) You plan to build a large, cheap cyclotron using the Earth's magnetic fields(1x10^-4 T) and orbiting just above the Earth's atmosphere (radius 5.7 x10 ^6 m) What energy, in volts, should protons be given to just circle the earth? q= 1.6 x10^-19 C, m= 1...

17 years ago

You plan to build a large, cheap cyclotron using the Earth's magnetic fields(1x10^-4 T) and orbiting just above the Earth's atmosphere (radius 5.7 x10 ^6 m) What energy, in volts, should protons be given to just circle the earth? q= 1.6 x10^-19 C, m= 1.67...

17 years ago

Indicate true or false in each of the following statements: 1. A static magnetic field can do work on a current carrying wire when the current in the wire is perpendicular to the field. 2. The time required for a charged particle to complete one cycle of...

17 years ago

1)Five possible transitions for a hydrogen atom are listed below: Select whether the atom gains or loses energy for each transition. a. Loses Gains ni = 6; nf = 4 Loses Gains ni = 4; nf = 2 Loses Gains ni = 5; nf = 3 Loses Gains ni = 2; nf = 5 Loses Gains...

17 years ago

2)Identify the initial and final states if an electron in hydrogen emits a photon with a wavelength of 1282.0 nm. Enter the initial state first

17 years ago

5)a. Electrons accelerated by a potential difference of 12.23 V pass through a gas of hydrogen atoms at room temperature. Calculate the wavelength of light emitted with the longest possible wavelength. b. Calculate the wavelength of light emitted with the...

17 years ago

1)What is the longest wavelength light capable of ionizing a hydrogen atom in the n = 6 state 2)a. Calculate the energy of the electron in the ground state of single ionized helium, which has an atomic number Z = 2. b. Calculate the radius of its ground-s...

17 years ago

1)7Be decays with a half-life of about 53 d. It is produced in the upper atmosphere, and filters down onto the Earth's surface. If a plant leaf is detected to have 300 decays/s of 7Be, how many days do we have to wait for the decay rate to drop to 13.6/s?...

17 years ago

1) An old wooden tool is found to contain only 11.9 percent of 14C that a sample of fresh wood would. How many years old is the tool? 2) A specimen taken from the wrappings of a mummy contains 7.02 g of carbon and has an activity of 1.34 Bq. How old is th...

17 years ago

1) The number of radioactive nuclei in a particular sample decreases over a period of 15 days to one-seventeenth the original number. What is the half-life (in days) of these nuclei? 2) What is the activity of a sample of 14C that contains 1.22E+21 nuclei...

17 years ago

A specimen taken from the wrappings of a mummy contains 7.02 g of carbon and has an activity of 1.34 Bq. How old is the mummy? Determine its age in years assuming that in living trees the ratio of 14C/12C atoms is 1.23E-12 I am not able to get the answer....

17 years ago

Assume a liter of milk has an activity of 2400 pCi due to 40K. If a person drinks 2 glasses (0.460 l) per day, estimate the total dose (rem) received in a year. As a crude model, assume the milk stays in the stomach 13.5hr and is then released. Assume als...

17 years ago

1.A truck with a mass 5000 kg is heading East at 20 m/s. Meanwhile a car with a mass 2500 kg is heading North at 30 m/s. The two vehicles collide at an intersection, get stuck together, and the wreckage keeps moving to some direction.find the speed of the...

17 years ago

11) Assume a liter of milk has an activity of 2400 pCi due to 40K. If a person drinks 2 glasses (0.460 l) per day, estimate the total dose (rem) received in a year. As a crude model, assume the milk stays in the stomach 13.5hr and is then released. Assume...

17 years ago

With regards to straight antennas and coiled antennas. Which one is better/more efficient at receiving, and why? Which one is better/more efficient at broadcasting, and why?

17 years ago

1.The greenish blue of water is evidence for the A) interaction between green and blue frequencies of light. B) reflection of red light. C) reflection of greenish-blue light. D) absorption of greenish-blue light. E) absorption of red light. 2.Atmospheric...

17 years ago

1. A 70 kg uniform 4.0 m long beam is attached to a vertical wall and is supported by a wire. The beam makes an angle of 45 degrees with the horizontal and the wire is horizontal. The horizontal component of the force that the wall exerts on the lower end...

17 years ago

Three blocks of mass 1kg,2kg and 3kg move on a frictionless surface and a horizontal force 46 N acts on the 3kg block.1kg and 2kg blocks are in contact with each other while 1kg and 3kg blocks are connected by a chord. (a) Determine the acceleration of th...

17 years ago

1.In a cathode ray tube, electrons are accelerated from rest by a constant electric force of magnitude 6.56 x 10*-17 N during the first 1.87 cm of tube's length; then they move at essentially constant velocity another 45.0 cm before hitting the screen. Fi...

17 years ago

1.A roller coaster is towed up an incline at a steady speed of 0.500 m/s by a chain parallel to the surface of the incline. The slope is 3.12 %, which means that the elevation increases by 3.12 m for every 100 m of horizontal distance. The mass of the rol...

17 years ago

A 66.0 kg base runner begins his slide into second base when he is moving at a speed of 4 m/s. The coefficient of friction between his clothes and Earth is 0.70. He slides so that his speed is zero just as he reaches the base. (a) How much mechanical ener...

17 years ago

A daredevil on a motorcycle leaves the end of a ramp with a speed of 29.0 m/s as in the figure below. If his speed is 26.7 m/s when he reaches the peak of the path, what is the maximum height that he reaches? Ignore friction and air resistance.

17 years ago

Two men lifted a total mass of 653.2 kg approximately 4 in. off the ground a total of 24 times. Estimate the total mechanical work done by the two men in lifting the boat 24 times, assuming they applied the same force to the boat during each lift. (Neglec...

17 years ago

A coaxial cable has an inside conductor of radius 'a' carrying a current 'I'.The current returns as a uniform current through the outside conductor with a inside radius 'b' and outside radius 'c'.What is the magnetic field at a distance 'r' from the cente...

17 years ago

The magnetic field inside a solenoid is 8.617 mT. If this solenoid sits with its central axis perpendicular to a 30 mT magnetic field, what is the magnitude of the torque on the solenoid

17 years ago

What is the force on an electron moving at v = 2.5*10^5 m/s away from a long wire,3mm from the electron, carrying a 12 A current? Give the magnitude & direction of the force. I calculated mag induction using B = u0I/2(pi)*a and force on the electron using...

17 years ago

A 4.60-m-long, 580 kg steel beam extends horizontally from the point where it has been bolted to the framework of a new building under construction. A 72.0 kg construction worker stands at the far end of the beam. What is the magnitude of the torque about...

16 years ago

Identical twins, each with mass 56.2 kg, are on ice skates and at rest on a frozen lake, which may be taken as frictionless. Twin A is carrying a backpack of mass 12.0 kg. She throws it horizontally at 3.50 m/s to Twin B. Neglecting any gravity effects, w...

16 years ago

You are hired to check the technical validity of a futuristic space mystery production. The scene takes place during the rst manned trip to Pluto's moon, Charon. Sally Skywalker is outside the spaceship repairing some hardware, when her safety line to the...

16 years ago

Two carts of equal mass, m = 0.280 kg, are placed on a frictionless track that has a light spring of force constant k = 51.9 N/m attached to one end of it. The red cart is given an initial velocity of v0 = 3.50 m/s to the right, and the blue cart is initi...

16 years ago

A 1.00 kg hollow ball with a radius of 2.2^10^-1 m, filled with air, is released from rest at the bottom of a 1.50 m deep pool of water. How high above the water does the ball shoot upward if the upward force exerted by the fluid on the ball 40 N? Neglect...

16 years ago

A wheel of radius 0.5 m rotates with a constant angular speed about an axis perpendicular to its center. A point on the wheel that is 0.2 m from the center has a tangential speed of 2 m/s. (a) Determine the tangential speed of a point 0.4 m from the cente...

16 years ago

A 1500kg car travels at a constant speed of 22 m/s around a circular track that has a radius of 85 m. What is the average velocity of the car during one revolution?

16 years ago

Two metal disks are taped to a meterstick. The mass of the meterstick is 460 grams. Disk 1 has a mass of 300 grams and is located at the 28 cm mark. Disk 2 has a mass of 500 grams and is located at the 64 cm mark. At what posi- tion along the meterstick s...

16 years ago

An object starts sliding up a plane tilted at an angle of alpha = 5.0◦ to the horizontal. The object’s initial speed is v = 2.0m/s. How far from the start point does the object come to a stop if μK = 0.20?

16 years ago

1) Sound propagating through air at 30 degree Celsius passes through a vertical cold front into air that is 40 degree Celsius. If the sound has a frequency of 2400 Hz, by what percentage does its wavelength change in crossing the boundary? (2) What is the...

16 years ago

Ethyl alcohol flows through a horizontal tube of diameter 2.96 cm that is joined to a second horizontal tube of diameter 1.50 cm. The pressure difference between the tubes is 7.41 kPa. What is the speed of flow in the first tube?

16 years ago

A trapeze artist of mass m swings on a rope of Length L. Initially, the trapeze artist is at rest and the rope makes an angle theta with the vertical. a) Find the tension in the rope when it is vertical. Why does your result for part a depend on L in the...

16 years ago

A bungee jumper with mass 69.5 kg jumps from a high bridge. After reaching his lowest point, he oscillates up and down, hitting a low point eight more times in 36.6 s. He finally comes to rest 24.3 m below the level of the bridge. Calculate the spring con...

16 years ago

A mine car, mass= 440 kg rolls at a speed of 0.50 m/s on a horizontal track. A 150-kg chunk of coal has a speed of 0.80 m/s when it leaves the chute. The chunk of coal falls into the car at a 25 degree angle. Determine the velocity of the car/coal system...

16 years ago

A flag pole consists of a 2.0 m long, 5.0 kg decorative ball on the end. What is the gravitational torque on the flag pole, calculated about an axis at the fixed end of the pole?

16 years ago

The intensity of an earthquake wave is measured to be 6 x10 ^6 J ms at a distance of 50 km from its source. Calculate the intensity when it passed the point 4 km to source ? What is the rate energy passed through an area of 6 ms^2 at 4 kW?

16 years ago

A bicycle with wheels of 70.0 cm diameter is going at a speed of 12.0 m/s.How fast is a point on the rim at the top of one of the wheels moving relative to the ground?

16 years ago

A car moving at a speed of approximately 176.5 km/h. 923 m in front of the car, there is a truck moving at a speed of 84.2 km/h in the same direction. 1.What is the name of the physical process that would occur if both vehicles kept moving at constant spe...

16 years ago

A microphone is located on the line connecting two speakers that are 0.546 m apart and oscillating 180degrees out of phase. The microphone is 2.00 m from the midpoint of the two speakers. What is the lowest frequency that produces an interference maximum...

16 years ago

A container of volume 0.39 m3 contains 8.7 mol of argon gas at 32◦C. Assuming argon behaves as an ideal gas, find the total internal energy of this gas. Answer in units of J.Given: R = 8.31451 J/mol • K.

16 years ago

5 mol of an ideal gas is kept at 394◦C in an expansion from 1 L to 5 L .How much work is done by the gas? Answer in units of J.Given: R = 8.31 J/K/mol ,

16 years ago

. Ethyl alcohol has been added to 160 mL of water in a container that has a mass of 130 g when empty. The resulting container and liquid mixture has a mass of 510 g .What volume of alcohol was added to the water? (in mL)

16 years ago

A rectangular trough, 2.0 m long, 0.50 m wide, and 0.50 m deep, is completely full of water. One end of the trough has a small drain plug right at the bottom edge. When you pull the plug, at what speed does water emerge from the hole? (in m/s)

16 years ago

A sailor strikes the side of his ship just below the waterline. He hears the echo of the sound reflected from the ocean floor directly below 1.85 s later. How deep is the ocean at this point?

16 years ago

In an amusement park rocket ride, cars are suspended from L = 4.28-m cables attached to rotating arms at a distance of d = 6.10 m from the axis of rotation. The cables swing out at an angle of θ = 52.0° when the ride is operating. What is the angular spee...

16 years ago

An object of mass m is hanging by a string from the roof of an elevator. We want to compare the tension in the string due to the weight of the object under various conditions. Which statements are true? Choices: True, False. A. If the elevator is moving u...

16 years ago

A block of mass M is sliding down an inclined plane and is accelerating. Which of the following statements are true? Choices: True, False. A. The frictional force must be less than the component of Mg down the plane B. The normal force of the plane is gre...

16 years ago

There is a horizontal rod of length L and mass M. A point mass m is vertically above the rod at a vertical distance L/4 and horizontal distance L/3 from one end of the rod.Using The Riemann sum Integral,find the magnitude and direction of the gravitationa...

16 years ago

A thin brass ring of inner diameter 10cm at 20degrees C is warmed and slipped over an aluminum rod of diameter 10.01cm at 20degrees C. Assuming the average coefficient of linear expansions are constant, to what temperature must this combination be cooled...

16 years ago

Cosmic microwave background radiation fills all space with an average energy density of 4 x 10^-14 j/m^3.(a) Find the rms value of electric field associated with this radiation.(b) How far from a 7.5 kW radio transmitter emitting uniformly in all directio...

16 years ago

A woman can see clearly her right eye only when objects are between 45 cm and 155 cm away. Prescription bifocals should have what powers so that she can see distant objects clearly(upper part) and be able to read a book 25 cm away(lower part) with her rig...

16 years ago

1. Planet X orbits the sun with a mean orbital radius that is 6200 times that of earth. Its diameter is twice that of earth, and its mass is 8 times that of earth. A) Calculate the year of the planet X. B) Calculate the acceleration due to gravity on plan...

16 years ago

Force F causes displacement d of a 20-Kg object starting from rest along a frictionless path. F= 10 N i + 50 N j + 15 N k and d= 10 m i + 60 m k A) Calculate the work done by the force. B) Calculate the angle between the vectors F and d. C) Calculate the...

16 years ago

A 2.0 kg block is attached to the end of a spring with a spring constant of 350 N/m and forced to oscillate by an applied force F = (15 N)sin(ωt),where ω = 35 rad/s. The damping constant is b = 15 kg/s. At t = 0,the block is at rest with the spring at its...

16 years ago

1.A spherical bowl(R = 20 cm) contains water(n = 1.33) and your pet gold fish who, is swimming 15 cm from the centre of the bowl. You however are 35.0 cm from the edge of the bowl-outside, of course. Describe the image your fish sees. 2.The hydrogen atom...

16 years ago

The hydrogen atom consists of a proton with an electron in orbit about the proton. The laws of quantum mechanics determine that the radius of this orbit is 5.29x10^-11 meters. Therefore, calculate a) The electric potential the electron experiences. b) The...

16 years ago

Particle A has twice the mass of particle B, and carries three times the charge of B charge. Both particles are sent perpendicularly through a uniform magnetic field, each with the same kinetic energy. What is the ratio of the radius of evolution of parti...

16 years ago

A 12 V battery is connected to 5 mega ohm resistor and a 6 micro farad capacitor and an open switch. After how many seconds will the voltage across the resistor reach 9 V? Suppose the battery is replaced by 12 V ac with a frequency of 60 Hz.Calculate the...

16 years ago

a)The star ships Enterprise and Potemkin leave the Earth and travel in opposite directions each at 0.60c relative to an observer on Earth.In the Enterprise's frame of reference how fast is the Potemkin moving away? b) Through what voltage must you acceler...

16 years ago

Two 10 meter long wires are parallel to each other and 5 cm apart.They carry currents of 6.0 A in opposite directions. What is the magnitude and direction of the magnetic field at a point P,halfway between the wires? Calculate the force exerted by the lef...

16 years ago

Design some simple digital circuits based on Boolean expressions. Draw circuits that implement the following Boolean expressions using some combination of AND, OR, NOT, NAND, and NOR gates. - NOT X OR NOT Y OR Z - X OR Y OR NOT Z - NOT X AND Y OR NOT Y AN...

16 years ago

A particle moves from rest, its initial position being given by x = c with reference to a fixed point O. Its acceleration at a distance ‘x’ from 0 is mu/x^2 away from O. Show that its velocity is sqrt mu/c when it is a distance ‘x’ from O.

16 years ago

A bullet of mass ‘m’ traveling horizontally at a speed ‘v’ embeds itself in the centre of a block of wood of mass ‘M’, which is suspended by a light vertical string of length ‘l’. What would be the maximum inclination of the string with the vertical?

16 years ago

Find the period of revolution of an artificial planet if the semi-major axis of the planet’s elliptic orbit is greater than that of the Earth’s orbit by 24 x 10^6 km. It is given that the semi-major axis of earth orbit round the sum is 1.5 x 10^8 km.

16 years ago

A straight horizontal rod A of mass 50 gm and length 0.5 m, is placed in a uniform horizontal magnetic field of 0.2 T, perpendicular to A. Calculate the current in A if the force acting on it just balances it weight.

16 years ago

A coil of N turns is wrapped around an iron ring of radius ‘d’ and cross-section ‘A’ (d > > A). Assuming a constant permeability, mu > > 1 for the iron. Find the following : (i) the magnetic flux as a function of the current ‘i’, and (ii) the magnetic flu...

16 years ago

(i) the magnetic flux as a function of the current ‘i’, and (ii) the magnetic flux if a gap of width delta^2 < < A) is cut in the ring

16 years ago

a) An infinite number of changes each equal to q are placed along the x-axis at x = 1, x = 2, x = 4, x = 8, . . . and so on. Find the potential and the esoteric at x = 0 due to this set of changes. What will be the potential and electric field if, in the...

16 years ago

A uniform electric field E in the x-direction is produced by an appropriate charge configuration. A thin sheet of charge s per unit area is placed perpendicular to the x-direction at x = 0. If the initial charge configuration is assumed to be undisturbed...

16 years ago

Two metal spheres, each of mass 1 gm and radius 0.5 cm are placed on a smooth, horizontal, insulated plate such that their centers are 15 cm apart. One is charged to a potential 500 volt and the other to 1000 volt. What is the velocity of each sphere when...

16 years ago

(a)The angular speed of a ceiling fan is increased uniformly in 3.0 s from 180 revs/min to 290 revs/min. What is the angular displacement of the blades during the acceleration? (b) 25 g of copper at 430 K is mixed with 150 mL of water 290 K. Assuming ener...

15 years ago

a) what is the density of a log floating in salt water if 42% of its volume is exposed? The density of salt water is 1025 kg/m^3 (b) What is the density of a sample of metal that sinks in water at 7.2 m/s^2

15 years ago

A mass m = 1.50 kg oscillates on an ideal,massless horizontal spring with a constant k = 73.5 N/m.The amplitude of oscillation is 10.0 cm.The system is frictionless. The positive x-direction is to the right. What is the mass's natural period of oscillatio...

15 years ago

A clump of soft clay is thrown horizontally from 78.40 m above the ground with a speed of 27.0 m/s. Where is the clay after 4.5 s? Assume it sticks in place when it hits the ground. horizontal ....m from the launch position vertical ....m from the ground

15 years ago

A particle's constant acceleration is south at 2.1 m/s2. At t = 0, its velocity is 42.6 m/s east. What is the magnitude and direction of its velocity at t = 7.6 s?

15 years ago

A speedboat heads west at 115 km/h for 16.0 min. It then travels at 56.0° south of west at 87.0 km/h for 9.0 min. (a) What is the average speed for the trip? (b) What is the average velocity for the trip in magnitude and direction?

15 years ago

A skydiver is falling straight down at 60 m/s when he opens his parachute and slows to 8.3 m/s in 4.0 s. What is the average acceleration of the skydiver during those 4.0 s? (Assume that "up" is the positive direction.)

15 years ago

Peggy drives from Cornwall to Atkins Glen in 46 min. Cornwall is 73 km from Illium in a direction 29° west of south. Atkins Glen is 26.3 km from Illium in a direction 20° south of west. Use Illium as your origin. Find the displacement during the trip in m...

15 years ago

1.A spherical condenser has inner and outer spheres of radii a and b respectively. The space between the two is filled air. The difference between the capacities of the two condensers formed when outer sphere is earthed and when inner sphere is earthed wi...

15 years ago

A soap bubble is given negative charge, what will happen it the radius and why?

15 years ago

Answers

The following answers were posted by visitors named Sandhya.

1. Truck moving along east along X direction and car moving north along the Y direction. Total momentum along the X direction: 5000 * 20 + 0 = 7500 V1 cosine ө 1000 = 75 V1 cosine ө --------------------- (1) Total momentum along the Y direction: 2500 * 30...

17 years ago

1. What is the best way to determine levelness? See if slope of Velocity versus Time for both directions are equal but opposite. 2. In chronological order, what happens to the kinetic, potential, and total energy of the cart for one half cycle. The half c...

17 years ago

Thanks Bobpursley. Prob.7 a = v-u / t = (0.585 - 0.780)/2 = 0.0975ms-2 S = ut + at2/2 = 0.78*2 - (0.0975*4)/2 = 1.56 - 0.195 = 1.36Work done by friction = m*a*S = 0.88*0.0975*1.365 =0.117117 J = 117.117 mJ Will anyone help in solving prob.6?

17 years ago

Thanks a lot.I was under the wrong impression that circular electric and magnetic lines of force do not exist.

17 years ago

(d) take Vin = 5 volts coswt

17 years ago

In a series L-C-R circuit Vin = V0*expjwt.Vout is taken across R. (a)Calculate the impedance of the circuit measured from the input side.Express the impedance in polar form. (b)Calculate Vout/Vin and express the ratio in polar form (c)Sketch the amplitude...

17 years ago

Thanks. But I want impedance & voltage gain in polar form as modZ*expiwt

17 years ago

Thank u very much

17 years ago

Thanks for the timely help

17 years ago

For prob 1 have used the formula, Kinetic energy of orbiting proton = B^2q^2r^2/2m joules and then converted it into MeV. Am i right? Prob 2 is a bookwork.

17 years ago

I have simplified it as (B^2q^2r^2) / 2m

17 years ago

Thank u

17 years ago

Thank you for your timely help.

17 years ago

Thaks a lot.

17 years ago

I thank you immensely for your help.

17 years ago

Hello Bobpursley I don't follow your steps. It is asked about longest & shortest possible wavelengths.Can you please explain?Thanks

17 years ago

Thanks drwls & Bob Pursley for your gerat help.

17 years ago

Thanks drwls & Bob Pursley for your great help.

17 years ago

Thanks a lot Damon Is my answer for the second problem correct?

17 years ago

Yes. But it is incorrect R = 1.34 Bq = 1.34 decays / second Mass of sample = 7.02 g For 14 C T 1/2 = 5700 years (approximate value) = 5700 x 365 x 24 x 60 x 60 =1.8 x 10 11 seconds T 1/2 = 0.6931 / λ λ = 0.6931 / 1.8 x 10 11 = 3.86 x 10 -12 per second Num...

17 years ago

Thanks a lot for your timely help.

17 years ago

Thanks for your quick help

17 years ago

Angle of launch is not given in the problem

17 years ago

Initial momentum = 0 Velocity with which skywalker should mve before oxygen exhausts = u = 200/7*60 = 0.48 m/s Velocity of throw of kit = v Mass of skywalker = M = 97 kg Mass of kit =m = 14 kg Final momentum = Mu + mv = 97*0.48 + 14v v = 97*0.48/14 = 0.01...

16 years ago

Thanks a lot for pointing out the arithmetic mistake.

16 years ago

Thanks. But as the carts exchange their velocities,blue cart must have a velocity = 3.50 m/s & red car zero velocity. Am i right? And x = 3.5sqrt(0.280/51.9 = 0.26 m

16 years ago

What is the role of Moment of inertia here? Am I right if I say that the tangential speed is the same 2 m/s & the tangential acceleration zero ?

16 years ago

Thanks for your guidance

16 years ago

Thanks for your easy solution for prob1 By the way is it not 1.016% ? I solved prob 2 using the formula Intensity level L = 10 log(I / I0) where I0 = 10^-12 watt/sq.m

16 years ago

Thanks a lot for your immediate response

16 years ago

Thanks for the timely help

16 years ago

Thank you very much

16 years ago

Thanks for the quick help

16 years ago

Thanks for your quick response

A. False B. True C. True D. False E. False

16 years ago

A. True B. False C. True D. False E. True

16 years ago

Thanks

16 years ago

Are my answers correct?

16 years ago

Thanks

16 years ago

a) The electric potential the electron experiences. b) The next available orbit has a radius four(4) times that of the orbit described above c) When an electron goes from the higher energy orbit to lower energy orbit, it releases the change in energy as p...

16 years ago

The hydrogen atom consists of a proton with an electron in orbit about the proton. The laws of quantum mechanics determine that the radius of this orbit is 5.29x10^-11 meters. Therefore, calculate a)The electric potential the electron experiences. b)The n...

16 years ago

Thanks

15 years ago

Here R = 0.20 m mV^2 /R = kQq/R^2 Am I right?

a) g(1) = (1 + 1)/1 = 2/1 = 2 b) g(0) =( 0 + 1)/0 = 1/0 = ¡Þ c) g(-1) = (-1 + 1)/-1 = 0/-1 = 0 d) g(x-1) = {(x ¨C 1) + 1}/(x ¨C 1) = x/(x ¨C 1)

14 years ago

Wait, then why isn't the concentration of [H+] also considered to be zero since the value is so small?

10 years ago

Yes I can thank you so much Dr. Bob! I got an answer of 8.38 as a pH which seems to be right. Thanks again!

10 years ago

Actually I figured out a, b, c, and d but I can't figure out e. What do you do if HCl is in excess?