The case of plessy v. ferguson, which affirmed the system of segregation, was subsequently overturned in which of the cases listed below?

select one:
a. tinker v. des moines
b. district of columbia v. heller
c. marbury v. madison
d. brown v. board of education

Rohit is trying to tune an instrument

(2) (a) you have a simple circuit that consists of only a battery (δvbat=1.5v) and two resistors with resistance r1=10ω and r2=5ω, connected in series with each other. what is the current running through the battery? (b) you re-arrange your circuit so now r2 is attached in parallel to r1 rather than in series. what is the current running through the battery? (c) you add an additional resistor r3=7ω on the same branch as r2. what is the current running through the battery? (d) what is the power dissipated in r3?

What is the gravitational attraction between a dating couple whose centers of mass are 0.630 m apart if the boy weighs 715 n and the girl weighs 465 n?