List and explain at 5 hazards
of radioactivity​

Aphysical change is a change in the size, shape,, or stafe of matter true or false

Determine the maximum r-value of the polar equation r =3+3 cos 0

James is trying to prove newton's 2nd law of motion. he tries to move four different objects with different masses, shapes, and sizes from point a to point b. the objects are a toy car, a car, a refrigerator, and a kitchen table. after some experimentation, he finds that force is dependent on the mass of the object, rather than it's size or shape. the object that takes the most force to move is the