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Neutron stars consist only of neutrons and have unbelievably high densities. A typical radius and mass for a neutron star might be 1.3 x 103 m and 3.6 x 1028 kg.
(a) Calculate the density of such a star.
(b) If a dime (V = 2.0 x 10-7m3) were made from this substance, determine how much would it weight (in pounds)?
A 900kg car strikes a huge spring at a speed of 24m/s(Figure 1) , compressing the spring 5.5m. compute the spring stiffness constant of the spring
A fan is rotating at a rate of 740 rpm. When the motor is turned off, What is the angular acceleration of the blades as they slow down
A rock is dropped into an abandoned mine, and a splash is heard 4s later. how fast the rock was falling when it hit the water
A person opens a door by applying a 17 N force perpendicular to it at a distance 0.90m from the hinges. What was the average power delivered
The driver of a 1800 {rm kg} car travelling on a horizontal road at 100 {rm km}/{rm h} suddenly applies the brakes. Because of a slippery pavement, the friction of the road on the tires of the car, which is what slows down the car, is 20.0% of the..
A military helicopter on a training mission is flying horizontally at a speed of 60.0 m/s and accidentally drops a bomb, How far does it travel horizontally while falling
A 9.5 kg mess kit sliding on a frictionless surface explodes into two 4.75 kg parts, one moving at 1.5 m/s, What was the original speed of the mess kit
Sam, who's mass is 79 kg, takes off across level snow in his jet powered skis. The skis have a thrust of 204 N and a coefficient of kinetic friction on snow of 0.1. Unfortunatately the skis run out of fuel after only 13 s.
Explain how a submarine is caused to submerge and surface without the use of its propulsion propeller and fins
The cyclist speeds up to a cadence of 120 (120 rotations per minute) in a surge lasting 30 seconds. What is the magnitude of angular acceleration of the wheel
Find the speed at which Superman (mass=83.0 kg) mustfly into a train (mass = 16756 kg) traveling at 100.0 km/hr to stop it. Running into the train at that speed would severely damage both train and passengers.
a beam of 800 kev gamma is mormally incident on a sheet of lead 12mm thick. the rate of energy transmission is 3x105
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