4. Two students walk in the same direction along a straight path, at a constant speed -- one at 9 m/s and the other at 1.9 m/s
2. Assuming that they start at the same point and the same time, how much sooner does the faster
student arrive at a destination 780 m away?
b. If student I increases his speed to 1.2 m/s, how much sooner does the faster student arrive at the same
destination?

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

Anybody wanna ? (picture included? )

Which of the choices are parts of an atom? select all that apply. a.) compound b.) electron c.) neutron d.) molecule e.) photon f.) proton g.) element