A sphere of mass 5.00 kg moving at 4.00 m/s collides with an identical sphere that is at rest. After the collision, the first sphere moves off at an angle of 60.0 degrees to the left of its original path and the second sphere moves off at an angle of 30.0 degrees to the right of the original path. What are the speeds of the two spheres after the collision? (Assume frictionless conditions)

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions

The temperature in gavin's oven is a sinusoidal function of time. gavin sets his oven so that it has a maximum temperature of 280°f and a minimum temperature of 240°. once the temperature hits 280°, it takes 20 minutes before it is 280° again. gavin's cake needs to be in the oven for 30 minutes at temperatures at or above 270°. he puts the cake into the oven when it is at 260° and rising. how long will gavin need to leave the cake in the oven? (round your answer to the nearest minute.)

If anyonee has done the momentum lab practical in physics can you give me the answers i am s lostt rnn : (