From the Sun, the distance to the Galactic Center is about:
A) 8 pc.
B) 8,000 pc.
C) 100,000 pc.
D) 225 million pc.
E) 100 billion pc.
B
You might also like to view...
Briefly describe our Galaxy
What will be an ideal response?
Three identical particles labeled A, B, and C enter a region of space where the magnetic field points away from the viewer perpendicular to the plane of the paper in the drawing in the next column. The particles’ velocities have the same magnitude and all lie in the plane of the paper, but they have the different directions shown. Which particle experiences the largest magnetic force? Answer A, B, or C, or choose from the answers below.
A.A
B.B
C.C
D. Both A and C.
E. The force magnitude has the same nonzero magnitude for all three particles.
F. The magnetic force on all three particles is zero.
A 2.0-kg mass is projected vertically upward from ground level with an initial speed of 30 m/s. The mass rises to a maximum height of 35 m above ground level. What is the change in mechanical energy of the mass caused by air resistance between the point of projection and the point of maximum height?
a. -0.21 kJ b. -0.47 kJ c. -0.40 kJ d. -0.34 kJ e. -0.69 kJ
Most of the world's water is in
A) icecaps. B) glaciers. C) rivers and lakes. D) the oceans.