The star sirius a has an apparent magnitude of −1.5. sirius a has a dim companion, sirius b, which is 10,000 times less bright than sirius a. what is the apparent magnitude of sirius b? can sirius b be seen with the naked eye?

What must be the same for any two resistors that are connected in series ? a. the potntial diffrence across each b. the rate at which charge moves through each c. the rate at which energy is used by each d. the resistance to the flow of charge of each

What are the applications of electromagnetic waves

14. a body is projected with velocity vi from a.at the same time another body is projectedvertically upwards from point b withvelocity v2 lies vertically below the highestpoint. both the bodies collide thenv2÷v1is