If the rate of emission of energy from a star is `2.7 xx 10^(36)` J/ sec, the rate of loss of mass in the star will be

The rate of emission of heat energy of an iron ball of radius 5 cm is 10 J/s, then rate of emission of heat energy by a copperr ball of radius 1 cm at same temperature will be (If emissivity of both the balls is same)

If the rate of loss of solar energy by radiation is 4.48 xx 10^(36) watt and the radius of the sun is 6.95 xx 10^5 km, what will be the temperature of the sun ?

What causes releases of energy from the sun and stars ?

The two stars in a certain binary star system move in circular orbits The first star alpha moves in an orbit of radius 1.00 xx 10^(9)km The other star beta moves in an orbit of radius 5.00 xx 10^(8)km What is the ratio of masses of star beta to the star alpha ? .

The two stars in a certain binary star system move in circular orbits The first star alpha moves in an orbit of radius 1.00 xx 10^(9)km The other star beta moves in an orbit of radius 5.00 xx 10^(8)km What is the ratio of masses of star beta to the star alpha ? .

The rate of emission of heat energy per unit area of an iron ball of radius 10 cm is 10J//m^2s s, then rate ·of emission of heat energy per unit area by a copper ball of radius 5 cm at same temperature will be ( emissivity of both the balls is same)

Sun radiates energy at the rate of 3.6xx10^(26)J//s . The rate of decrease in mass of sun is (Kgs^(1)) .

A black body at 127^(@)C emits the energy at the rate of 10^(6)J//m^(2) s the temperature of a black body at which the rate of energy emission is 16 xx 10^(6)J//m^(2)s is .