If the total momentum of the system was 600Kg* m/s before the collision and afterwards the momentum of the white truck is 400kg*m/s, what is
the momentum of the red truck after the collision?

Hydrogen and helium are both members of?

1kg of water needs to recieve 4200j of energy to go from 90 degrees to 91 degrees. what is the specific heat capacity of water? what are the units?

You charge a parallel-plate capacitor, remove it from the battery, and prevent the wires connected to the plates from touching each other. when you increase the plate separation, what happens to the following quantities?