4.Question 4If v = 0 in the Lorentz transformation equation (and Alice is in one frame of reference and Bob in the other frame of reference), and Bob observes an event that occurs at x = 36 in his frame of reference, which of the following statements is true?1 pointAlice will observe the event at x = 18 in her frame of reference.Alice will observe the event at x = 72 in her frame of reference.We need to know the value of the Lorentz factor before we can know where Alice observes the event to occur.Alice will observe the event at x = 36 in her frame of reference.

2.Question 2Consider a situation that is similar to that in one of the video lectures, i.e., Alice observing Bob traveling from Earth to a star at a certain distance from Earth. Assume that the Lorentz factor for the relative velocity between Alice’s frame of reference (the Earth-star frame of reference) and Bob’s frame of reference (the spaceship frame of reference) has a value of 3. Alice, in her frame of reference, measures the distance to the star as 18 light years. What is the distance from Earth to the star in Bob’s frame of reference?1 point54 light years18 light years0 light years6 light years

4.Question 4The spaceships of Bob and Alice sit side-by-side at a spaceport. They measure them and both agree that each spaceship is 26 meters long. Alice takes off and Bob observes Alice's spaceship go by at a constant velocity such that the Lorentz factor is 2. Bob measures the length of his ship as Alice flies by. What value does he get?1 point52 meters13 meters26 meters

5.Question 5In the Lorentz transformation equation for time, what is a consequence of the xmoving term?1 pointTime dilationLeading clocks lagLength contraction

We can use the Lorentz transformation equations to find the space coordinates of the event as measured by an observer stationed in frame S', which is moving relative to S with velocity 0.6c along the common x-x' axis. The Lorentz transformation equations are:

6.Question 6Consider a spacetime diagram for Alice’s frame of reference (so Alice is positioned at x = 0) where x is in units of light years and t is in units of years. At t = 0 Alice plans to have a party. Consider the spacetime points listed below. If Bob was located at the point, and he had a spaceship that could travel at any speed up to the speed of light, would he be able to get to the party in time? (Mark all that are possible for him to get to the party in time.)1 pointx = 23, t = -17x = 3, t = 9x = 0, t = -3x = 17, t = -23