Ebuah kereta maglev (magnetic levitation train) bermassa 70 ton digunakan untuk transportasi koloni di mars sepanjang amazonis planitia yang terbentang sekitar 1183 km. jika percepatan gravitasi mars gmars = 3,73 m/s², arus yang digunakan sebesar 7 ampere, maka kuat medan magnet minimum yang diperlukan agar kereta tersebut tetap terapung sepanjang perjalanan t

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.