Who discovered the first four pulsars?
A) Anthony Hewish
B) Martin Schwartzschild
C) Jocelyn Bell
D) Carl Sagan
E) Stephen Hawking
C
You might also like to view...
You throw a Frisbee of mass m and radius r so that it is spinning about a horizontal axis perpendicular to the plane of the Frisbee. Ignoring air resistance, the torque exerted about its center of mass by gravity is
A. 0. B. mgr. C. 2mgr. D. a function of the angular velocity. E. small at first, then increasing as the Frisbee loses the torque given it by your hand.
How is stepping off a curb similar to taking a ride aboard an orbiting space vehicle?
What will be an ideal response?
Planetary scientists use crater counts to estimate the
A) habitability of planetary surfaces B) ages of planetary surfaces C) temperatures of planetary surfaces D) chemical compositions of planetary surfaces
10?6 phones is equal to _______.
A. Mphone B. kphone C. mphone D. ?phone