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Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star may be 2.7 x 1028 kg and 1.2 x 103 m.(a) Discover the density of such a star.(b) If a dime (V = 2.0 x 10-7m3) were made from this material, how much would it weight (in pounds)?
Use the worked example above to help you solve this problem. A tortoise and rabbit engage in a footrace over a distance of 3.70 km. The rabbit runs 0.400 km, then stops for a 83.0-min nap. Upon awakening, he remembers the race, and runs twice a..
An object is oscilliating on a spring with a period of 4.60 s . At time t= 0.00 s the object has zero speed and is at x = 8.30 cm . What is the acceleration of the object at t= 2.50 s ?
a 70kg person stands on a diving board 4m long. the boards mass is 25kg and is bolted to two supports. calculate the force on the board at each of the supports
A FLYWHEEL WITH A MOMENT OF INERTIA 6.00 * 10^6 kg*m^2 is spinning with an angular speed of 120 rev/s about a vertical axis while it sits at the north pole. What will be the change in length of a day on earth
You have a ball on a wire that is twirled in a circular orbit with a radius of 3.8 m, and the centripetal force acting on the ball, What is the speed of the ball in orbit
A dietary Calorie is actually a kilocalorie (note that by convention a capital 'C' is always used to indicate a dietary calorie and a lower case 'c' is used otherwise). Given that 1 cal = 4.186 J express the average daily dietary intake of a person..
If a reflected ray in the air at an angle of reflection of 60 degrees is totally polarized, what is the index of refraction of the reflecting material
A 3.0 kg particle with velocity v = (5.0 m/s) i -(6.0 m/s) j is at x = 3.0 m, y = 8.0 m. It ispulled by a 7.0 N force in the negative x direction. What torque about the origin acts on the particle?
A hoop and a disk, both of 0.48- m radius and 3.0- kg mass, are released from the top of an inclined plane 3.3 m high and 8.3 m long. What is the speed of the hoop
A flat uniform circular disk (radius = 2.60 m, mass = 1.00 x 102 kg) is initiallystationary. Find the resulting angular speed of the disk
Two loudspeakers, 5.0 m apart and facing each other, play identical sounds of the same frequency, What is the frequency of the sound (in Hz)
What must be the area of a suction cup that is completely evacuated and a ceiling if the cup is to support a child who weighs 30 kg
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