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When a large star becomes a supernova, its core may be compressed so tightly that it becomes a neutron star, with a radius of about 10 km (about the size of a typical city). If a neutron star rotates once every 0.75 seconds,
(a) what is the speed of a particle (in km/s) on the star's equator and
(b) what is the magnitude of the particle's centripetal acceleration?
A vertical straight wire carrying and upward 24-A current exerts an attractive force per unit length of 8.8 X 10-4 N/m on a secon parallel wire 7.0 cm away
A car is approaching a reflecting wall. A stationary observer behind the car hears a sound of frequency 790 Hz from the car horn and a sound of frequency 813 Hz from the wall. What is the frequency of the car horn
The power required by an ice maker is 225 W and is the rate at which it does work. determine the maximum amount of ice the unit can produce in one day
A molecule is represented by a charge -2q at the origin and charges +q at b1 and b2, where | b1 | = | b2 | = b, Find dipole moment of the molecule
The Beretta Model 92S (the standard-issue U.S. army pistol) has a barrel 127 long. What is the acceleration of the bullet while it is in the barrel
A figure skater can increase her spin rotation rate from an initial rate of 1.0 rev every 2.8 s to a final rate of 3.3 rev/s. what is her final moment of inertia
n a circuit, a current of 4A is drawn from a battery. The current then divides, What is the value of the other resistor
A 3000 kg truck traveling north at 30 km/h turns east and accelerates to 48 km/h. What is the change in the truck's kinetic energy
A 60 kg front seat passenger in a car moving initially with aspeed of 23 m/s (50 MPH) is brought to rest by an airr bag in a time of 0.4s. What is the impulse acting on the passenger
a film of index of refraction of 1.4 and thickness of 1.2*10^-5 m is on a lens with an index of refraction of 1.6. find the path length difference between the two reflected rays
Four point charges have the same magnitude of 2.8 x 10^-12 C and are fixed to the corners of a square that is 7.1 cm on a side. Determine the magnitude of the net electric field
430 cm3 of water at 86°C is mixed with 120 cm3 of water at 11°C. Calculate the final equilibrium temperature, What is the equilibrium temperature after initial heat loss
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