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A symmetric double convex lens with a focal length of 25.0cm is to be made from glass with an index of refraction of 1.53. What should be the radius of curvature for each surface
What would be the adol addition product resulting from the reaction of 2 molecules of pentanal
A particle (Mass=m, charge=e, and Energy=E) is incident on a potential barrier from x<-a. sing Schrodinger equation determine the eflection and transmission coefficient at x=-a interface
If the original activity of a radioactive substance was 2.00 Ci and later the activity was measured to be 9.25x10^9 Bq, how many half-lives have passed
Carbon-14 decays with a half-life of 5730 years. What is the first order rae constant for its decay in units of years^-1
Which of the following would have the lowest frequency factor A( part of the Arrhenius equation in a situation where all concentration are 1M and take place at identical temperatures
Reaction A has positve delta H and positve delta S, reaction B has positive delta H and negative delta S, reaction C has negative delta H and positiveS, reaction D has has negative delta H and negat
A coil of wire with 217 circular turns of radius 3.20cm is in a uniform magnetic field along the axis of the coil. The coil has R = 41.5?, calculate the average emf induced in the coil
a supertanker with the mass of 3.34^7 kg is moving with a constant velocity .its engines generate a forword thurst of 5.38x10^5 n. determine the magnitude of the upward buoyant force exerted on the
Once, it is important that the level of the elution solvent not drop below the top of the adsorbent why? the absorbent is packed in a liquid chromatography column
a 19.2 kg sled is being pulled across a horizontal surface at a constant velocity. determine the coefficient of kinetic friction
What is the maximum mass in grams of NH3 that can be produced by the reaction of 1.0g of N2 with 3.0g of H2
In tae-kwon-do, a hand is slammed down onto a target at a speed of 13 m/s and comes to a stop during the 7.0 ms collision. What are the magnitudes of the impulse
A radioactive sample contains 1.30g of an isotope with a half-life of 3.5 days. What mass of the isotope will remain after 5.6 days? (Assume no excretion of the nuclide from the body.)
A 1.0 kg ball drops vertically onto a floor, hitting with a speed of 28 m/s. It rebounds with an initial speed of 12 m/s. What impulse acts on the ball during the contact
A merry-go-round is a common piece of playground equipment. A 3.0-m-diameter merry-go-round with a mass of 230kg is spinning at 17rpm, What is the merry-go-round's angular velocity, in rpm, after Joh
With which of the metals Cu(s), Al(s), Ag(s), Fe(s) and Zn(s) is reaction with H+(aq) ions to produce H2(g) a spontaneous reaction. Select three oxidizing agents that are capable of oxidizing Cl-(aq)
A 45kg figure skater is spinning on the toes of her skates at 1.2rev/s . Her arms are outstretched as far as they will go. What is her new rotation frequency, in revolutions per second
Combining aqueous solutions of BaI2 and Na2SO4 gives a precipitate. Which ion(s) is/are spectator ions in the reaction
Galaxy A is moving away from us with a speed of 0.80c relative to the earth. How fast is galaxy A moving according to an observer in galaxy B
The temperature of a 15g sample of lead metal increases from 22oC to 37oC upon the addition of 29.0 J of heat. The specific heat capactiy of the lead is jg*K
A nuclear power plant produces an average of 4.90 × 103 MW of power during a year of operation. Find the corresponding change in mass of reactor fuel
Use the Rydberg equation to predict the wavelength of the electromagnetic radiation emitted for following electron transitions for the hydrogen atom (rounded-off to the nearest 0.1nm).
what splitting pattern would account for m/z of 105 for the compund 1 ethyl 3,5 dimethyl benzene Explain