PHY 1120 Homework 12 Early Quantum Theory & Models of the Atom 1. What is the value of e/m for a particle that moves in a circle of radius 16 mm ina 0.92 T magnetic field if a perpendicular 620 V/m electric field will make the path straight? (This particle is not an electron so we may not get the normal value for e/m.) A) What is the velocity of a beam of electrons that move in a straight line when passing through crossed (perpendicular) electric and magnetic fields of magnitude 1.88 x 10* V/m and 2.6 x 103 T, respectively. B) What is the radius of the electron orbit if the electric field is turned off? The mass of an electron is 9.11 x 103 kg. Charge on an electronis 1.6 x 109 C. How hot (in Kelvin) is a metal that is being welded if it radiates most strongly at 505 nm? A) If the peak of a blackbody radiation spectrum is 16 nm, what is the temperature of the object? B) What is the wavelength at the peak of a blackbody spectrum in the body is at a temperature of 2400 K? An HCI molecule vibrates with a natural frequency of 8.1 x 103 Hz. What is the difference in energy (in J) between successive values of oscillation energy