The nucleus of a typical atom is 3.0x10-15 m in diameter. A very simple model of the nucleus is a one- dimensional box in which protons are confined. Estimate the minimum kinetic energy of a proton in a 3.0x10-15 m long box. ▼ Part A Express your answer in joules. E= Submit VO ΑΣΦ Request Answer ? J

The energy-level diagram for the atomic emission spectra of an unknown gas is presented in the diagram below. n = 4 4.0 ev n = 3 1.8 eV n = 2 1.5 ev n=1 O ev Part A Initially, electrons are only in the ground state (n=1). A beam of red light hits the gas. This beam is a continuous spectrum of red light (from 620 nm to 750 nm) How many absorption line/s will there be in the spectra? 1 Correct Part B Initially, electrons are only in the ground state (n=1). A beam of red light hits the gas. This beam is a continuous spectrum of red light (from 620 nm to 750 nm) Calculate the wavelength of the absorption line ? da = nm Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining

ItemView?assignmentProblemID=150282761&offset3Dnext Homework 7 - Magnetic Field and Forces Exercise 27.21 A deuteron (the nucleus of an isotope of hydrogen) has a mass of 3.34x10-27 kg and a charge of 1.60×10-19 C. The deuteron travels in a circular path with a radius of 7.50 mm in a magnetic field with a magnitude of 2.20 T Part A Find the speed of the deuteron. να ΑΣφ m/s Submit Request Answer Part B Find the time required for it to make - of a revolution. t = Submit Request Answer a P Type here to search

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A uniform electric field is created by two horizontal parallel plate electrodes of length 10 cm separated by a vertical distance d = 5 cm and held at a potential difference V = 250V. A beam of electrons is introduced between the two plates with a horizontal velocity v = 5 x 106 m/s. What is the deflection distance towards the positive plate when the electron beam leaves the electric field? Select one: a. 5.0 cm b. 3.5 cm c. 1.76 cm d. 8.8 mm

Four different particles are trapped in one dimensional wells with infinite potential at the walls and zero potential inside. The masses of the particles and their energy level, n , are given by: 1.  mass=m, n=1 2. mass=2m, n=2 3. mass =3m, n=3 4. mass=4m, n=2 All these wells have the same length L. Rank the kinetic energy of the particles in order of size, smallest to largest. Group of answer choices E3 <E1<E2<E4 E1 = E4 < E2 < E3 E4 <E3 <E2 = E1 E1 < E2 = E4 < E3 E1 < E2 = E3 <E4

In the Millikan oil drop experiment tiny charged oil droplets generated by a spray are allowed to fall under gravity through a hole in a top electrode, T, towards a bottom electrode B separated from T by 1 cm. When a holding voltage Vh = +0.25V is applied between T and B the droplets are seen to be suspended motionless between the electrodes. What is the specific charge of the droplet q/m? Select one: a. 2.7 C/kg b. 1.5 C/kg c. 0.16 C/kg d. 0.392 C/kg

A hydrogen atom ¹H with 200 eV of kinetic energy has a head-on, perfectly elastic collision with a ¹2C atom at rest. Part A Afterward, what is the kinetic energy, in eV, of ¹H? Express your answer in electron volts. KfH = Submit Part B V Kfc = ΑΣΦ Request Answer Afterward, what is the kinetic energy, in eV, of ¹2C? Express your answer in electron volts. ww ΑΣΦ ? ? eV eV

In a Millikan experiment, two horizontal parallel plates are 3.5 cm apart. A sphere A whose mass is equal to 4.2 x 10^-17 kg remains in suspension, while the potential difference between the plates is 5.00 V and the upper plate is positive.a. Determine the charge on the sphere.b. What is the magnitude of the sphere's excess or deficiency of electrons?