Pigeons are bred to display a number of interesting characteristics. One breed o
ID: 1972345 • Letter: P
Question
Pigeons are bred to display a number of interesting characteristics. One breed of pigeon, the "roller," is remarkable for the fact that it does a number of backward somersaults as it drops straight down toward the ground. Suppose a roller pigeon drops from rest and free falls downward for a distance of 13 m.A.) If the pigeon somersaults at the rate of 11 rad/s , how many revolutions has it completed by the end of its fall?
The Crab Nebula One of the most studied objects in the night sky is the Crab nebula, the remains of a supernova explosion observed by the Chinese in 1054. In 1968 it was discovered that a pulsar-a rapidly rotating neutron star that emits a pulse of radio waves with each revolution-lies near the center of the Crab nebula. The period of this pulsar is 33 ms
B.) What is the angular speed (in rad/s ) of the Crab nebula pulsar?
Explanation / Answer
The Crab Nebula One of the most studied objects in the night sky is the Crab nebula, the remains of a supernova explosion observed by the Chinese in 1054. In 1968 it was discovered that a pulsar-a rapidly rotating neutron star that emits a pulse of radio waves with each revolution-lies near the center of the Crab nebula. The period of this pulsar is 33 ms B.) What is the angular speed (in rad/s ) of the Crab nebula pulsar? 190 rads/sec