Which of these types of radiation do you suppose we should fear the most if administered internally? •gamma rays •neutrons •alpha particles •beta particles •neutrinos •x-rays

A 35-kg girl is standing near and to the left of a 43-kg boy on the frictionless surface of a frozen pond. The boy throws a 0.75-kg ice ball to the girl with a horizontal speed of 6.2 m/s.

Why does a glass rod become positively charged when it is rubbed with a silk cloth?

You want to prevent charges from moving off of a charged metal sphere. Which statement accurately describes the material you need? O A. It has a low resistance and is a conductor. O B. It has a high resistance and is an insulator. O C.

If three uncharged styrofoam balls are placed together and agitated so that one gains + 3 C of charge and another gains + 4 C of charge, how much charge must there be on the third one?

What is the name of the nearest galaxy to ours?

In the parts that follow select whether the number presented in statement A is greater than, less than, or equal to the number presented in statement B. Be sure to follow all of the rules concerning significant figures. Statement A: 2.

All your cells contain proto-oncogenes, which can change into cancer-causing genes. Why do cells possess such potential time bombs? A. Cells produce proto-oncogenes as a by-product of mitosis. B.

What is the mass of a basketball that is shot with 12N of force at an acceleration of 4m/s2?

Why do metals have similar properties?

After completing a scientific investigation, a scientist will draw conclusions about their hypothesis using data they gathered during their investigation. True False