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Pulsars are neutron stars that emit X rays and other radiation insuch a way that we on Earth receive pulses of radiation from thepulsars at regular intervals equal to the period that they rotate.Some of these pulsars rotate with periods as short as 1 ms! The Crab Pulsar, located inside the Crab Nebula in the constellationOrion, has a period currently of length 33.085 ms. It is estimatedto have an equatorial radius of 15 km, an average radius for aneutron star.
(a) What is the value of the centripetalacceleration of an object on the surface at the equator of thepulsar?(b) Many pulsars are observed to have periodsthat lengthen slightly with time, a phenomenon called "spin down."The rate of slowing of the Crab Pulsar is 3.50*10-13 s per second, which implies that if thisrate remains constant, the Crab Pulsar will stop spinning in9.50*1010 s (about 3000 years from today). What is thetangential acceleration of an object on the equator of this neutronstar?
Three 15 cm long rods form an equilateral triangle. Two of the rods are charged to + 13nC , compute the electric field strength at the center of the triangle
A gymnast of mass 59 hangs from a vertical rope attached to the ceiling. You can ignore the weight of the rope and presume that the rope does not stretch. Utilize the value for the acceleration of gravity.
A 75 kg ladder that is 3.0 m in length is placed against a wall at an angle theta. The center of gravity of the ladder is at a point 1.2 m from the base of the ladder. find the static frictional force between the floor and the ladder
a vehicle covers 600m on a compass bearing of 47 degrees,then 500m bearing 128 degrees; Determine the resultant displacement of the vehicle
The rotor in a certain electric motor is a flat, rectangular coil with 87 turns of wire and dimensions 2.33 cm by 3.88 cm. Find the maximum torque acting on the rotor
A 50 kg person stands at the edge of a 7.4 m diameter circular platform, What is the magnitude of the speed of the person (in m/s) with respect to the ground
A vessel contains 32 grams of dry ice (solid carbon dioxide) at T = -78°C, How much energy is required for the carbon dioxide to sublimate
A mirror produces an image of the sun, and the image is located 0.9800 m from the mirror. The same mirror is then used to produce an image of the tree. find the object distance do of the tree from the mirror
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. what is the work function for this metal
An ac generator with a frequency of 29.4 Hz and an rms voltage of 12.0 V is connected to a 49.5-µF capacitor. What is the maximum current in this circuit?
A wheel has a maximum rate of rotation of 150 revolutions per minute. Starting from rest, Calculate the magnitude of its angular acceleration
Suppose that the separation between two speakers A and B is 4.40 m and the speakers are vibrating in-phase, What is the largest possible distance between speaker B and the observer,
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