A binary star system, in which the star (a) has a radius of Ra = 1.7 Ro, an effective temperature of Ta = 9900k , and a mass of the star(a) Ma = 2.0 Mo . The star (a) was observed with a wavelength ( 6000 A°) and the amount of change At wavelength (0.8 A°), the star (b) has a radius of Rb = 0.9Ro, a temperature of Tb = 5300 K, and a mass of the star (b) Mb = 0.9Mo. These two stars orbit in circular orbits around their common center of mass, with a period P = 40 days What is the orbital speed of each star with respect to the center of mass?​

If y gets smaller as x gets bigger and y have an relationship?

Aweight lifter raises a 1600 n barbell to a height of 2.0 meters. how much work was done? w = fd a) 30 joules b) 3000 joules c) 320 joules d) 3200 joules

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?