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A star with the same mass and diameter as the sun rotates about a central axis with aperiod of about 28.4 days. Suppose that the sun runs out of nuclear fuel andcollapses to form a white dwarf star with a diameter equal to that of the earth. Assumethe star acts like a solid sphere and that there is no loss of mass in the process.
Radius of the Sun = 9.96x10^8
Radius of the Earth = 6.37x10^6
(a) What would be the new rotation period (s) of the star?
(b) What is the ratio of nal to initial kinetic energies (Kf=Ki)?
A 22.5 g bullet is fired from a rifle. It takes 2.60 10-3 s for the bullet to travel the length of the barrel, find the average net force exerted on the bullet
The index of refraction for crown glass is 1.512 at a wavelength of 660 nm (red), whereas its index of refraction is 1.530 at a wavelength of 410 nm (violet), what is the angle of refraction for each wavelength
The total translational kinetic energy of the molecules of a sample of gas at 447 K is 1.33 x 10^4 J, Find the average translational kinetic energy of a single molecule
The magnitude of q is chosen to make the potential difference between spheres 430 V, with the inner sphere at higher potential. Compute q.
Two small particles have charges Q1 = +2.5 ?C and Q2 = ?5.5 ?C. what is the distance between the particles
Let us model the electrical behavior of such a molecule by a pair of +/- 1.60x10^-19 -C charges connected by a spring with force constant= 2.05x10^-4 N/m. What is the magnitude of the induced electric dipole moment
If the electric field has a magnitude of 450 and the magnetic field has a magnitude of 0.19 , illustrate what speed must the particles have to pass through the selector undeflected?
you are on a plane that leaves DIA and flies 170 km at 68 east of north and then changes direction to fly 230 km at 48 south of east, after which it makes an emergency landing in a pasture next to a large herd of buffalo.
resistance R, capacitance C, and inductance L are connected in series, what is the formula for impedence for this circuit
Coherent light of wavelength 540.4 nm is sent through two parallel slits in an opaque material. Each slit is 0.700 µm wide. How many bright fringes are visible on the screen
A man in search of his dog drives first 10mi northeast, then 54mi straight south, and finally 6mi in a direction 30° north of west. What are the magnitude and direction of his resultant displacement.
A proton orbits a long charged wire, making 1.60 x 10^6 revolutions per second. The radius of the orbit is 1.40cm. What is the wire's linear charge density
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