The table above shows the distances to some of the nearest stars to our solar system. which of the following is true? i. light from all three stars reaches earth in equal time. ii. light from all three stars travels at the same speed. iii. of the three stars, sirius is the farthest from earth. iv. barnard's star is closer to earth than sirius is.

Determine the maximum r-value of the polar equation r =3+3 cos 0

Part 1: a magnetic levitation or maglev train rides rails without touching them. explain how this works using your data. include the appropriate magnet drawing in your answer. part 2: two objects are near a bar magnet. one is about 1 cm away, while the other is 6 cm away. compare and contrast the magnetic force that affects each object. use your data to answer the question

Photoelectrons with a maximum speed of 6.50 x 107 m/s are ejected from a surface in the presence of light with a frequency of 6.75 x 1014hz. if the mass of an electron is 9.10 x 10-31 kg, calculate in joules the maximum kinetic energy of a single electron. 3.84 x 10-15 j 1.92 x 10-15 j 5.92 x 10-23 j 3.07 x 10-16 j