Geminga pulses strongly in gamma rays, and may be the closest neutron star. Why is it unusual?
What will be an ideal response?
It gives off no observed radio pulses, the way most pulsars are found, and only shines weakly as a light source.
You might also like to view...
A proton cyclotron has a magnetic field of 0.20 T between its poles and a radius of 0.40 m. What is the maximum energy for the protons from this machine?
A. 
B. 
C. 
D. 
E. 
Venus has a high reflectivity because of its
A) light-colored rocks. B) snow. C) clouds. D) dust storms. E) volcanic ash.
A parallel plate capacitor of capacitance C0 has plates of area A with separation d between them. When it is connected to a battery of voltage V0, it has charge of magnitude Q0 on its plates. It is then disconnected from the battery and the plates are pulled apart to a separation 2d without discharging them. After the plates are 2d apart, the magnitude of the charge on the plates and the potential difference between them are what?
A.
Q0, 
V0B.
V0C.
D.
E.
An artificial satellite in a low orbit circles the earth every 98.0 minutes. What is its angular speed in rad/s?
What will be an ideal response?