A comet of mass 1.20 3 1010 kg moves in an elliptical orbit around the Sun. Its distance from the Sun ranges
between 0.500 AU and 50.0 AU. (a) What is the eccentricity of its orbit? (b) What is its period?

Which of the following quantities are units of momentum? (there could be more than one correct choice.) a)n m b) kg s/m c) kg m/'s d)n-s 12 points] e) kg m2/s2

Ajet plane has a sound level of 120 db at a distance of 60 m. what is the q23. sound level at a distance of 6.0 km? (60)2 (6000)? om solution 80db db, hint: 16x assume ultrasound waves travel through the body of an animal at 1540 q24. m/s. if a 30,000 hz signal were reflected off a portion of a heart which was moving toward the source at 3 m/s, what frequency signal would return to the stationary source? solution 30.117hz

Amira pulls a 3 pound wagon 4 feet. how much work has she done?