Halley's comet has an elliptical orbit around the Sun with a period of 76.0 years. At its closest approach (perihelion) it is 88.6 x 1010 m from the Sun and has a speed of 54.8 km/s
How far is it from the Sun at its furthest point (aphelion)? The mass of the Sun is 2.00 × 1030 kg and G = 6.67 x 10-11 N•m2/kg2. A) 12.8 × 1012 m
B) 32.3 × 1012 m
C) 5.42 × 1012 m
D) 31.4 × 1012 m
E) 52..3 × 1012 m
B
You might also like to view...
The unified model describes active galactic nuclei using
a. a supermassive black hole at the center of a normal spiral galaxy. b. a supermassive black hole surrounded by an accretion disk and dense disk of gas. c. an accretion disk around a neutron star. d. gravitational lenses to intensify the radiation coming from them. e. different lines of sight toward and dwarf irregular galaxy.
Consider the magnitude of the average speed, vavg, speed, mag, and the magnitude of the average velocity, vavg, velocity, mag, for the same trip. Which of the following is always true?
a. vavg, speed, mag = vavg, velocity, mag b. vavg, speed, mag ? vavg, velocity, mag c. vavg, speed, mag ? vavg, velocity, mag d. none of the above
Diffraction Gratings: A metallic sheet has a large number of parallel slits, 5.0 mm wide and 20 cm apart. This sheet is used as a diffraction grating for microwaves. A wide parallel beam of microwaves is incident normally on the sheet. What is the smallest microwave frequency for which only the central maximum will occur? (c = 3.00 × 108 m/s)
A. 0.50 GHz B. 0.70 GHz C. 1.0 GHz D. 1.5 GHz E. 2.0 GHz
A meterstick is supported by a knife-edge at the 50.0-cm mark. Doug hangs masses of 0.48 and 0.76 kg from the 10-cm and 80-cm marks, respectively. Where should Doug hang a third mass of 0.25 kg to keep the stick balanced?
a. 64.4 cm b. 25.6 cm c. 74.4 cm d. 35.6 cm e. 50 cm