97.38: A vehicle traveling at a constant 0.60 c passes agtifyjt5ha5q , r p87* clock at a street intersection. For a one-second interval on that clock, what interval will the driver otf hpgy q at,558r*j7if the vehicle measure?

  07.48: How fast must an observer move so that a stationn:s bfdhm1u 3 z-dmqf2o.6lw. (fqg3 fary object appears to be one-half of its proper leng-32.(dfsm1fzo.uf fld mqb 3h6n :wqg th?

  11.50: A person sets a one-meter long st,qcw( d2 spq*nick so that it makes a $30^{\circ}$ angle with the x-axis. An observer in a space ship moving along the x-axis measures the angle of the stick to be $60^{\circ}$ with the 6-axis. With what speed is the space ship moving in terms of the speed of light c?

  14.50: Two clocks, A and B, are synchronized on Earw 4+atcge ;,sl5e 9btath. Clock A is placed onto a space ship+bewt ,; ta4 9scgeal5 that leaves Earth in a straight line with a speed of $2.40\times\: 10^8$ m/s. On Earth, a scientist with clock B has her telescope fixed directly on clock A. If each clock started at t = 0 s, what time does the scientist observe on clock A when clock B reads t = 90 s ? Assume the time of acceleration for the ship leaving the Earth was negligible.

  16.49: John is at rest on a platform that he measures to be 500e +iqnaqv+8n3hl .* dc m long on the x-axis. He then sees a spaceship moving along the x+lv3 ndqe*n8qic. ah+-axis with a speed of $1.80\times\: 10^8\:m/s$ as it crosses the length of the platform. Sitting in her chair, the spaceship's pilot measures the time it takes her to cross the platform. What type of time interval does she measure and what value does she obtain?