If you found a new element how would you know it was new

This famous scientist conducted experiments that led to the development of the Plum Pudding atomic model.

Do rolling down a grassy hill has kinetic energy or potential energy

Seeds are formed in the of flowers, which become

What happened to the pitch of the sound as the sound source moved past the observer? Record your observations.

Which wave requires a medium for trasmission? a. Light b. Radio c. Infrared d. Sound

A submarine that is in the sea what principle is that

1. It takes 26.5 N to pull a 72 kg sled across snow. What is the coefficient of friction? 2. A 565 N rightward force pulls a large box across the floor with a constant velocity of 0.75 m/s. If the coefficient of friction is 0.

A person holds onto an object for 2 minutes, but doesn't move the object. Is work done on the object?

Which two vectors add together to give a resultant with the smallest magnitude, and which two vectors add to give a resultant with the largest magnitude? in each case specify the magnitude and direction of the resultant?

The largest velocity reached by a falling object is its