Pleaseee help it’s due in 20 minutes the 500 series bullet train travels between Tokyo and hakata, Japan. If it is heading north with a momentum of 13,194,098.64 kg m / s at a velocity of 261.8 KM/H what is its mass

If you mix chlorine lithium in nickel together which two elements would be the most reactive

Apassenger walks toward the rear of a moving train. describe her motion as seen from a reference point on the train. then describe it from a reference point on the ground

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.