Suppose a comet orbits the Sun on a highly eccentric orbit with an average (semimajor axis) distance of 1 AU. How long does it take to complete each orbit, and how do we know?
A) Each orbit takes about 1 year, which we know from Kepler's third law.
B) It depends on the eccentricity of the orbit, as described by Kepler's first law.
C) It depends on the eccentricity of the orbit, as described by Kepler's second law.
D) Each orbit should take about 2 years, because the eccentricity is so large.
A
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Which of these gases is most responsible for the greenhouse effect on Earth?
a. oxygen (O2) b. nitrogen (N2) c. carbon dioxide (CO2) d. ozone (O3) e. ammonia (NH3)
A heater is rated at 1200 watts for a 120-volt source.The current drawn by the heater is 10 amperes
a. True b. False Indicate whether the statement is true or false
Light strikes a 5.0-cm thick sheet of glass at an angle of incidence in air of 50°. The sheet has parallel faces and the glass has an index of refraction 1.50
(a) What is the angle of refraction in the glass? (b) After traveling through the glass the light re-emerges into the air. What is the final angle of refraction in air? (c) As it leaves the glass, by what distance is the path of the ray is displaced from what it was before entering the glass?
Exhibit 16-1
A graph of position versus time for an object oscillating at the free end of a horizontal spring is shown below.
?
?
Use this exhibit to answer the following question(s).
Refer to . The point at which the object has negative velocity and zero acceleration is
a.
A
b.
B
c.
C
d.
D
e.
E