In diameters of stars, the relative diameters of the two stars in the sirius system were determined. let’s use this value to explore other aspects of this system. this will be done through several steps, each in its own exercise. assume the temperature of the sun is 5800 k, and the temperature of sirius a, the larger star of the binary, is10,000 k. the luminosity of sirius a can be found in appendix j, and is given as about 23 times that of the sun. using the values provided, calculate the radius of sirius a relative to that of the sun.

In 1980, alfa romeo introduced the first system to smooth a rough idle caused by ignition and camshaft timing changes.

Which is not a characteristic of a heat pump? a. it is used in air conditioners. b. it uses a refrigerant. c. it requires no work. d. it reverses the normal flow of thermal energy.

Anonzero net force acts on a particle and does work. which one of the following statements is true? the kinetic energy of the particle changes, but the speed of the particle does not change. the kinetic energy of the particle does not change, but the speed of the particle does change. the kinetic energy of the particle changes, but the velocity of the particle does not change. the kinetic energy and the speed of the particle change, but the velocity of the particle does not change. the kinetic energy, speed, and velocity of the particle change.