@alexrobin13 a 62 kg box is lifted 12 meters off the ground. how much work was done? a) 5.17 j b) 72.91 j c) 744.0 j d) 7291.2 j

Acompound machine is also called a machine. a. force b. simple c. complex d. directional

Consider a hydrogen atom in the ground state. what is the energy of its electron? =e= jj now consider an excited‑state hydrogen atom. what is the energy of the electron in the =5n=5 level? =e5= j

What is the speed vfinal of the electron when it is 10.0 cm from charge 1?