A quarterback takes the football from the line of scrimmage, runs backwards for 12.0 yards, and then runs 5.7 yards at an angle 52 north of west; he keeps looking, but cannot find anyone open, so he decides to make a break for it. He runs 38.8 yards at an angle of 12 east of north to score a touchdown. What is the displacement of the football from the line of scrimmage to the end zone, where the quarterback scored for his team?

Explain why the aperture of the spherical mirror should be small compared to the radius of curvature of the mirror.

Water at room temperature of 20.0°c is poured into an aluminum cylinder which has graduation markings etched on the inside. the reading in the graduations is 300.0 cc. the cylinder with the water in it is then immersed in a constant temperature bath at a temperature of 100°c. what is the reading for the level of water on the graduations of the cylinder after the water and the cylinder reach thermal equilibrium with the bath? the volume coefficient of expansion of water is 2.07 x 10^-4 k-1, and the linear coefficient of expansion of aluminum is 23.0 x 10^-6 k-1. a) 305.0 cc b) 304.0 cc c) 303.5 cc d) 303.3 cc e) 304.5 cc

World class speed skaters can skate a 3,000-m course in about 4 minutes.what is their average speed for this course? a. 12.5 m/sb. 1.33 m/sc. 1.25 m/sd. 13.3 m/s