In the blanks below write what the independent variable and the dependent variable would be for each experiment. (what are you testing?) (how are you measuring it?) Independent variable Dependent variables 1. Problem: Does the amount you study a subject affect the scores you get on a test? Independent variable did you study_ Dependent variable ___higher test scores_
2. Problem: Does misbehaving in school affect a student’s grades? Independent variable Dependent variable
3. Problem: What gives people more gas; eating beans or cabbage? Independent variable Dependent variable
4. Problem: Can you catch more fish with worms or with shrimp? Independent variable Dependent variable
5. Problem: Does talking to plants help increase their growth? Independent variable Dependent variable 6. Problem: Does eating breakfast help students perform better in school? Independent variable Dependent variable 7. Do gerbils or hamsters run faster? Independent variable Dependent variable 8. Problem: Does eating more candy cause cavities? Independent variable Dependent variable
9. Problem: What diet will allow you to lose the most weight, no sugar or no carbs? Independent variable Dependent variable
10. Problem: What, on average, is larger, a chicken egg or a duck egg? Independent variable Dependent variable

An isolated conducting spherical shell carries a positive charge. part a which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? which statement (or statements) about the electric field and the electric potential inside and outside the spherical shell is correct? electric potential inside the shell is constant and outside the shell is changing as 1/r2 both the electric potential and the electric field does change with r inside and outside the spherical shell electric potential inside and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is equal to zero electric field inside and outside the shell is constant (does not change with the position r), but is not equal to zero electric field inside and outside the shell is changing as 1/r (where r is the distance from the center of the sphere) electric field inside is equal to zero and outside the shell is constant, but not zero electric potential inside the shell is constant and outside the shell is changing as 1/r electric field inside and outside the shell is changing as 1/r2 electric field inside is equal to zero and outside the shell is changing as 1/r2 electric field inside and outside the shell is zero electric field inside is constant and outside the shell is changing as 1/r