Question

A. A distant observer detects a change in the brightness of the Sun as Jupiter transits the Sun. How big is this change in magnitudes?

B. A distant observer detects a change in the brightness of the Sun as Earth transits the Sun. How big is this change in magnitudes?

Answer #1

Suppose we could move Earth to the distance at which Jupiter
orbits the Sun. Jupiter is much more massive than Earth, and orbits
every 11.9 years. What would the Earth's new period be?
options:
A. It would remain 1 year
B. Between 1 and 11.9 years
C. Also 11.9 years
D. More than 11.9 years
E. It would depend on the speed given to Earth
F. It's impossible for a smaller massed planet like Earth to
orbit at Jupiter's distance.

Based on your answers to the previous questions, what is the
relationship between brightness and apparent magnitude?
Question 4 options:
brighter stars have smaller apparent magnitudes
there is no relationship between brightness and apparent
magnitude
brighter stars have larger apparent magnitudes
Would a star of apparent magnitude -2.0 be brighter than Sirius
or fainter?
Question 5 options:
fainter than Sirius
brighter than Sirius.
While apparent magnitude measures how bright a star appears to
us on Earth, absolute magnitude measures the...

Problem 14.50 According to an observer at rest in the Earth
reference frame, ship A is moving toward ship B at speed 0.862
c0 while ship B is moving toward ship A at 0.697
c0 .Ship A sends out a shuttle module M that travels to
ship B at speed 0.575 c0 relative to A. Part
A When a pilot of the module sees 1.00 s pass on her
clock, how much time would she observe passing on a distant...

Show all calculations and formulas used.
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What is the relative brightness of the Sun as seen from Saturn
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A distant star is found to have twice the surface temperature as
our sun Tstar= 2Tsun. However, the total power emitted from that
star’s surface is found to be four times the power emitted from our
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(a) how do you think we know the surface temperature of that
star without ever visiting it?(1 point)
(b) What can you tell about the radius Rstar of that star
compared to the radius Rsun of our sun?(2 points)
Rstar/Rsun=

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(a) If a solar panel is about 20% efficient in converting solar
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How does the color and intensity of the emitted light change as
you take a solid object and heat it up from a low temperature to an
extremely high temperature?
a. It gets redder and dimmer.
b. It gets redder and brighter.
c. it gets bluer and dimmer.
d. It gets bluer and brighter.
e, As it gets hotter, it emits only specific frequencies of
light corresponding to the atomic transitions of the material at
the surface.
f. As it...

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