Each of the following lists two facts. Which pair of facts can be used with Newton's version of Kepler's third law to determine the mass of the Sun?

A) Earth is 150 million km from the Sun and orbits the Sun in one year.
B) Mercury is 0.387 AU from the Sun and Earth is 1 AU from the Sun.
C) The mass of Earth is 6 × 1024 kg and Earth orbits the Sun in one year.
D) Earth rotates in one day and orbits the Sun in one year.


A) Earth is 150 million km from the Sun and orbits the Sun in one year.

Physics & Space Science

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Our Sun is a star of spectral type ________

A) M B) F C) S D) G

Physics & Space Science

A 2-kg car moving towards the right at 4 m/s collides head on with an 8 kg car moving towards the left at 2 m/s, and they stick together. After the collision, the velocity of the combined bodies is __________ m/s pointing __________

Fill in the blank(s) with correct word

Physics & Space Science

A note is being played on a string on a guitar. The string is then pushed to the side while still in contact with the same fret. What happens to the frequency of the note then played compared to the original note?

a. It is the same note since the same fret is being used. b. It is at higher frequency than the original note. c. It is at lower frequency than the original note. d. It can be either higher of lower frequency depending on whether the original note was above or below middle C.

Physics & Space Science

A 12-kg projectile is launched with an initial vertical speed of 20 m/s. It rises to a maximum height of 18 m above the launch point. What is the change in mechanical energy caused by the dissipative (air) resistive force on the projectile during this ascent?

a. ?0.64 kJ b. ?0.40 kJ c. ?0.52 kJ d. ?0.28 kJ e. ?0.76 kJ

Physics & Space Science