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Star rotates with a period of 30 days about an axis during its center. The period is the time it takes a point on the star's equator to make one complete revolution around the axis of rotation. After the star undergoes a supernova explosion, the steller core, which had a radius of 1.0 x 10^4 Km collapses into a neutron star of radius 3.0 Km. what is the new period of rotation of the star?
Air in a balloon does 46 J of work while absorbing 94 J of heat. What is the change in internal energy
A generator of frequency 2500 Hzdrives a series RLC circuit with an emf amplitude of 120V. The resistance is 3.1 , the capacitance is1.60 µF, What is the current amplitude
A circular beaker is 40 cm tall and has a radius of 2 cm. Itinitially holds water at a depth of 25cm. What is the pressure at the bottom of the beaker
Calculate the limiting angle of resolution for the eye, assuming a pupil diameter of 1.80 mm, a wavelength of 530 nm in air, and an index of refraction for the eye of 1.33
a parallel plate capacitor with a surface charge density of 23.7 micro-coulombm2 is aligned such that its plates are
Two objects moving toward each other collide and rebound. Determine the change in kinetic energy of the smaller object
The electric field on the surface of a 10 cm diameter sphere is perpendicular to the sphere and has magnitude 37 kN/C. What is the electric flux through the sphere?
500 kg satellite moves in a circular orbit of 4.8 x 106 m above the surface of the earth. What is the orbital speed of the satellite
Light of wavelength 2E-12 m undergoes compton scattering at an angle of 45 degrees, What is the wavelength of the scattered photon
A projectile is launched from a 300 m high cliff at an angle of 30? with an initial velocity of 150 m/s. (g=9.8m/s2). calculate the Direction of the velocity on impact
a. calculate the debroglie wavelength of a 1000 kg automobile traveling at 100 km per hour.b. calculate the debroglie
In discharging a capacitor what percentage of the initial potential remains after one time constant has passed? After two times constants? Three times constants
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