White star that has a surface temperature

Reference no: EM13550621

Sirius B is a white star that has a surface temperature (in kelvins) that is four times that of our sun. Sirius B radiates only 0.040 times the power radiated by the sun. Our sun has a radius of 6.96 × 108 m. Assuming that Sirius B has the same emissivity as the sun, find the radius of Sirius B.

Reference no: EM13550621

Questions Cloud

Find the acceleration of the center of mass of the sphere : A 1.00 kg sphere of radius 10.0 cm is rolling down a ramp with ramp angle 30 degrees. What is the acceleration of the center of mass of the sphere

Standing waves on a wire are described : Standing waves on a wire are described by y(x, t)=(A_{\rm SW} {\rm sin} kx ){\rm sin} \omega t, with A_{\rm SW} = 2.50mm , \omega = 976rad/s , and k = 0.730\pi \; rad/m . The left end of the wire is at x = 0.

Energy loss is due to the emission of radiation : A solar collector is placed in direct sunlight where it absorbs energy at the rate of 910 J/s for each square meter of its surface. The emissivity of the solar collector is e = 0.79. What equilibrium temperature does the collector reach? Assume that ..

Estimate the mass of the canoe : A 9.9kg dog takes a nap in a canoe and wakes up to find the canoe has drifted out onto the lake but now is stationary. What is the mass of the canoe

White star that has a surface temperature : Sirius B is a white star that has a surface temperature (in kelvins) that is four times that of our sun. Sirius B radiates only 0.040 times the power radiated by the sun. Our sun has a radius of 6.96 × 108 m. Assuming that Sirius B has the same emiss..

What is the amplitude of oscillation for the motion : An oscillator consists of a block attached to a spring (k = 450.0 N/m). At some time t the position (measured from the system's equilibrium location),velocity, What is the amplitude of oscillation for the motion

Difference between the capillaries and the surface of skin : The amount of heat per second conducted from the blood capillaries beneath the skin to the surface is 260 J/s. The energy is transferred a distance of 1.8 × 10-3 m through a body whose surface area is 1.3 m2. Assuming that the thermal conductivity..

Estimate what will be the angular speed : A satellite consists of a sphere of mass 1.00 x 10^3 with two spherical "ears" on retractable booms. The ears each have a mass of 50.0 kg. what will be the angular speed

Minimum transverse speeds of a point at an antinode. : Adjacent antinodes of a standing wave on a string are 15.0cm apart. A particle at an antinode oscillates in simple harmonic motion with amplitude 0.850cm and period 0.0750 s. The string lies along the +x-axis and is fixed at x=0. What is the amplitud..

User Account

All Pages