2. The following graph shows changes in the water level at a hypothetical dock over the course of 15 days Water Level at Dock
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Day
What kind of tide occurred on Day 5? What kind of tide occurred on Day 13?
Draw a diagram to show the relative positions of the earth, sun, and moon on Day 5. Draw another diagram to
show the relative positions of the earth, sun, and moon on day 13. (Make sure you label each body)

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?

Which best describes the difference between internal and thermal energy?

The great sandini is a 60.0-kg circus performer who is shot from a cannon (actually a spring gun). you don’t find many men of his caliber, so you him design a new gun. this new gun has a very large spring with a very small mass and a force constant of 1100 n/m that he will compress with a force of 4400 n. the inside of the gun barrel is coated with teflon, so the average friction force will be only 40.0 n during the 4.00 m he moves in the barrel. at what speed will he emerge from the end of the barrel, 2.50 m above his initial rest position?