Using absolute magnitudes for the sun of mb = 5.48, mv = 4.83, and mr = 4.42, calculate the fluxes fλ (in units of erg cm−2 s −1 ˚a−1 ) and fν (in units of jy) received at earth from the sun when observing with the b, v , and r filters. ignore any absorption by the earth’s atmosphere.
(c) the st magnitude system is designed so that, for any filter, apparent magnitude zero corresponds to fλ = 3.63 × 10−9 erg cm−2 s −1 ˚a−1 . determine the apparent and absolute b, v , and r magnitudes of the sun in the st system.
(d) the ab magnitude system is designed so that, for any filter, apparent magnitude zero corresponds to fν = 3.63 × 10−20 erg cm−2 s −1 hz−1 = 3630 jy. determine the apparent and absolute b, v , and r magnitudes of the sun in the ab system.

From 0 to 5 seconds john pushed a box 5 meters. from 5 to 10 seconds, paul pushed the same box another 5 meters. who did more work? a. john b. paul c. john and paul did the same amount of work.

While studying chemical reactions and conservation of matter, sarah's class conducted a variety of experiments. sarah and her lab partner found the mass of a wax candle and placed the candle in a flask. the students lit the candle and let it burn to completion. all that was left was wax and charred candle wick. per their teacher's instructions, the students found the mass of the products. their data can be seen in the data table. formulate a hypothesis the students could test to explain why the experiment did not support the law of conservation of matter. a) the students could repeat the experiment using different candles; there might have been a flaw in the candle. b) the experiment should be repeatable. the students should run several trials and then take an average of the after mass in each trial. c) the students should have someone in the class check their measurement skills as they repeat the experiment. they may have made an error using the balance. d) the students should burn the candle in a container that has some type of lid so that any gas that is a product of the reaction can be contained and massed. submit

Wavelength of 125 meters is moving at a speed of 10 m/s. what is it's frequency?