A77.0 kg woman slides down a 42.6 m long waterslide inclined at 42.3. at the bottom, she is moving 20.3 m/s. how much work did friction do on the woman? (unit=j)

A17,250 kg rocket is pushed with a thrust of 6,450,284 n. what is the acceleration of the rocket?

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

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