If a quasar has a recessional velocity of 2.7 × 10^5 km/s and is determined to be 3600 Mpc, what is the Hubble constant based on this quasar alone? Hint: Note that the units of your result should be (km/s)/Mpc to see what arithmetic process you need to perform
a. 50 km/s/Mpc
b. 9.7 × 10^8 (km/s)Mpc
c. 75 km/s/Mpc
d. 0.013 km/s/Mpc
e. 273,600 km/s/Mpc
c
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A pole-vaulter holds out a 4.75m pole horizontally in front of him. Assuming the pole is uniform in construction, and that he holds the pole with one hand at the very end, and one hand 0.75m from the end, what is the ratio of the force applied by the hand on the end of the pole to the weight of the pole?
A. 3.2 B. 2.7 C. 5.3 D. 2.2
A planet is most likely to have tectonic activity if it has
A) high surface gravity. B) high internal temperature. C) a dense atmosphere. D) low surface gravity. E) low internal temperature.
In deriving the axial electric field for the ring-shaped charge distribution and the electric field from a long line of charge, the component perpendicular to the resulting field is zero because of what physical property?
A) only net charge is important B) positive and negative charges cancel C) superposition D) integration E) symmetry
A myopic (nearsighted) dancer wears eyeglasses that allow him to have clear distant vision. The power of the lenses of his eyeglasses is -3.00 diopters. Without eyeglasses, what is the far point of the dancer?
A) 0.50 m B) 0.17 m C) 0.42 m D) 0.33 m E) 0.25 m