Object A has a positive charge. Object A is attracted to object B. Object B is repelled by Object C. Object C and Object D are attracted to one another. What are the charges on each of these objects

Note: the following questions are unrelated to the balmer series or the martian. refer to your course notes. a sun-sized star will spend most of its lifetime as a: white dwarf b. red giant c. protostar d. main-sequence star

Ameter stick is pivoted at the 0.50-m line. a 3.0-kg object is hung from the 0.15-m line. where should a 5.0-kg object be hung to achieve equilibrium (the meter stick oriented horizontal and motionless)?

Who was the first scientist to measure speed as distance over time?