A uranium-235 sample starts with 200 atoms, and 700 million years later, there are 100 atoms. What is the half-life of uranium-235?

A. 350 million years

B. 235 years

C. 100 years

D. 700 million years

The capacity of the muscle to use a single maximum force over any range of motion is

Four children pull on the same toy at the same time yet there is no net force on the toy how is that possible

How does earths movement through space impact the human experience

What is two. 08*10 to the 10th power as standard notation

How do scientists construct models of atoms and molecules?

Does high pressure rise and low pressure sink

A unit vector is used in the symbolic representation of the electric field. What physical units does the unit vector have? meters. The unit vector has no units. coulombs. The units depend on how it is used.

What's the definition of streak

The organization of notes into regular groups results in A. some notes sounding more prominent than others. B. all notes lasting for the same amount of time. C. patterns of long and short notes. D. a steady beat.

Sara is sitting in the back seat as her father drives at a constant speed. If Sara's father presses on the brakes quickly slowing the car down, what slows Sara down? A. air resistance on the inside of the car B.