Problem S: Planets Beyond the Solar System. On October 15, 2001, a planet was discovered orbiting around the star HD 68988. Its orbital distance was measured to be 1.05 x 10¹⁰ m from the center of the star, and its orbital period was estimated at 6.3 days = 5.44 x 105 sec. What is the mass of HD 68988? Express your answer in kilograms and in terms of our sun's mass (Msun = 1.99 x 1030 kg) Answer: M = 2.31 x 10³⁰ kg = 1.16 Msun-

Problem S: Planets Beyond the Solar System. On October 15, 2001, a planet was discovered orbiting around the star HD 68988. Its orbital distance was measured to be 1.05 x 10¹⁰ m from the center of the star, and its orbital period was estimated at 6.3 days = 5.44 x 105 sec. What is the mass of HD 68988? Express your answer in kilograms and in terms of our sun's mass (Msun = 1.99 x 1030 kg) Answer: M = 2.31 x 10³⁰ kg = 1.16 Msun-

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter29: Nuclear Physics

Section: Chapter Questions

Problem 2P

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estions 1.602x 10*-1 C, m= 9.11x 10-81 kg, h=6.626x 10^-34 J.s, o=D3x 10'8 m/s, 8.85x10-12 F/m k-1.38x10*-23/K, Avogadro's number= 6.023x10 26, kT = 0.0259 ev (et T=300K) Determine the probability of state being occupied by an electron at (EF-0.04), assume T- 300K 23% O 10% O 17.5% 15.5% O In a parallel-plate diode. the anoce is at 240V with rescect to the cathode
The electric potential difference AV, also called voltage, is expressed in terms of the electric field as follows AV = | Edr a where, a is the initial position and b is the final position. If an electric field in a region in space is defined as E= Br where B is just a constant without an arbitrary value. What is the electric potential difference from position 0 to R? 1 AV = BR3 3 1 AV = BR3 AV = 1 (1– B)aR³ 2 AV = Br3 O AV = -(1-B)aR³ 1 AV = Br3 1 AV = BR2
QUESTION 1 When vou are swimming at the bottom of a pool, the water above and around you exerts force on your eardrum. Calculate the force (in N) exerted on your eardrum when you are at the bottom of a pool that is 5.0 m deep. Assume that the area of your eardrum is 1 cm^2 and the density of water is 1000 kg/m^3 (10,000 cm^2 = 1m^2) (Ans: 5N) To solve this, which of the following equation/s should you use (check as many that best applies) Ορ-m/V W = dv O Q = mcAT O Q= mL 1 P2 + pgh, + Pi+pghi+ 늑pv? dQ AS= S Δ $EdA =- PEDA = Lenc €0 O Fb =P fluidgV submerged P= pgh F=ma
1. The half-life of a radioactive substance is the time it takes for half of the substance to decay. The radioactive iodine isotope I-131, which has a half-life of 8 days, is used to treat hyperthyroidism. Solve 400 - 3.125 to find how many days t it will take for 400 millicuries of I-131 to decay to 3.125 millicuries. A 56 days в 7days C 8 days D 128 days 2. In the year 2000, the population of Mexico was about 100 million, and was growing by approximately 1.53% per year. At this growth rate, the function Ax) = 100(1.0153)* gives the population, in millions, x years after 2000. Using this model and a graph of the function, in what year would the population reach 109 million? Round your answer to the nearest year. 2006 C 2005 D 2007 A в 2008 3. Use a graph to solve 3* - 100. A x-4.2 в х-2.1 C x- 0.2 D x-0.1
Fg KE = mv², Ug Gm₂mz r2 == 2 ac -2²₁v=2²7₁9= = 27, g = GM, Vesc = = Gm₁m₂ T 2GM VR E = KE + Ug, G = 6.674 x 10-¹1 N. m²/kg² }
What is the Sl equivalent of 4 Ci? a. 150,000,000,000 or 1.48 X 10(12) Bq Ob. 0.04 Bq c. 0.001032 C/kg Od. 148,000,000,000 or 1.48 X 10(11) Bq
7. How many milliliters of drug will be left in a 2 L bottle if 320 ml, 15 ml, 130 ml and 1.2 L are removed? 8. A Patient received three different I.V. drug, each mixed in 50 ml of fluid, over 8 hours. The patient also received 700 ml of I.V. fluid during that time. What was the patient's total I.V. intake in milliliters?
KE = mv², KE = Iw², Ug = mgh, U₁ = ¹kx², E = KE + Ug + Us, E₁ = Ef L = mrv, 1 =1w
Nuclear Physics - Nuclear Structure Density= Nuclear Structure Z mass Volume radius r=r04¹/3 ro=1.2x10-¹5 m N A = Z+N 4 The radius r of a nucleus is given in the above figure. The volume of a nucleus is V = Proton 56 Fe nucleus has a total of 56 nucleons (protons + neutrons). The average mass of a nucleon is u = 1.66x10^-27 kg I whin ber Neutron A Z If this unknown nucleus has 60 neutrons, how many protons does it have? Enter a number rr³ (a)Calculate the radius of a 56 Fe nucleus. Write the radius in fm, 1 fm = 10-15 m. Keep 2 decimal places. Enter a number x10-¹5m, fm (b) Calculate the Denisity of a 56Fe nucleus.. Write the result in terms of 1017 kg/m³. Keep 2 decimal places. Enter a number x10¹7kg/m³ () (c) An unknown hacieus has twice the volume of 56Fe. What is the mass number A of this nucleus? Enter a number i
The correct answer for the question is 1.586879 * 10^-9 or 0.000000001586879 ± 1.0% but I am not sure how can you help.
-14 (a) Find the speed an alpha particle requires to come within 3.4 x 10 m of an iron nucleus. 19.35*10**6 X Your response differs from the correct answer by more than 10%. Double check your calculations. m/s (b) Find the energy of the alpha particle in MeV. 7.79 Your response differs from the correct answer by more than 100%. MeV
2.00 mol of the helium is confined to a 2.00-L container at a pressure of 11.0 atm. The atomic mass of helium is 4.00 u, and the conversion between u and kg is 1 u = 1.661 ××10−27 kg. 1)Calculate vrms. (Express your answer to three significant figures.)