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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 11 km (about the size of a typical city). If a neutron star rotates once every 0.45 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?
The potential at location A is 481 V. A positively charged particle is released there from rest and arrives at location B with a speed vB. The potential at location C is 878 V, and when released from rest from this spot, the particle arrives at B wit..
A diver springs upward from a board that is 3.15 meters above the water. Determine her initial speed as she leaves the board
The hunter uses a small powerboat that moves at a maximum speed of 9 km/h with respect to the water. Illustrate what is the minimum time necessary for crossing?
The velocity of an object falling in free fall increases with time. Does the acceleration also increase? Why or why not?
Consider an object attached to an ideal spring that oscillates according to the equation x=(34.0 cm) cos (8.10£) where £ is in seconds. what is the mechanical energy of the oscillations
Basic science concepts in optics like Which types of electromagnetic radiation can be seen from the surface of Earth.
An object is held up by two ropes. rope 1 makes an angle of 65 degrees above horizontal and the tension in it is T1 = 26N. rope 2 makes an angle of 32 degrees above horizontal and the object is in equilibrium. what is the tension in rope 2 (T2) an..
What is the period of this pendulum in the small angle approximation.
Two specks of dirt are trapped in a crystal ball, one at the center and other halfway to the surface, what is the refractive index of the ball
If the magnetic field in a traveling EM wave has a peak magnitude of 13.3nT, what is the peak magnitude of the electric field
A 3000 pound car crashes into a concrete jersey barrier moving 3 sections (totaling 12,000 pounds) laterally 24 inches. How fast was the car going on impact.
A drunk driver in a 1600 kg car plows into a 1500 kg parked car with its brake set. Police measurements show that the two cars skid together a distance of 19 m before stopping. If the effective coefficient of friction is 0.78, how fast was the dru..
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