Explain why two different elements cannot occupy the same box in the periodic table

The velocity of a curling stone is due east. what will be the direction of the momentum of the curling stone as it moves?

An engineer designs a roller coaster so that a car travels horizontally for 162 ft, then climbs 127 ft at an angle of 31.0° above the horizontal. it then moves 127 ft at an angle of 46.0° below the horizontal. if we take the initial horizontal motion of the car to be along the +x-axis, what is the car's displacement? (give the magnitude of your answer, in ft, to at least four significant figures and give the direction of your answer in degrees counterclockwise from the +x-axis.)

Determine el momento angular de un rueda de 3000g moviendose a 10m/s con un radio de giro de 400cm