1. Are you attending lecture today? 1.Yes 2.No 15 12345

2. A car goes forward along a level road at constant velocity. The total force acting on the tires is 1234567891011121314151617181920 2122232425262728293031323334353637383940 41424344454647484950 1.greater than the normal force times the coefficient of static friction. 2.equal to the normal force times the coefficient of static friction. 3.the normal force times the coefficient of kinetic friction. 4.zero.

3. A dancer stands on her toes. What is the pressure exerted by the floor over the area of contact if the dancer is stationary? Dancer weight50.0 kg Contact area26.0 cm 2 15 1.1.88 x 105 Pa 2.2.65 x 105 Pa

4. Two small cylindrical plastic containers with flat bottoms are placed on a turntable that has a smooth flat surface. Canister A is empty; canister B contains lead shot. Each canister is the same distance r from the center. The coefficient of static friction between the canisters and the turntable is. When the speed of the turntable is gradually increased, 12345 a. only the lighter container slides outward off the turntable; the heavier one stays on. b. only the heavier container slides outward off the turntable; the lighter one stays on. c. both containers slide off the turntable at the same turntable speed. d. the lighter container slides inward. e. the heavier container slides inward. :20

5. Evaluate the integral:. 1. e x – 9 ln (9 + e x ) + C 2. e x + 9 ln (9 + e x ) + C 3.9e x – 9 ln (9 + e -x ) + C 4.9e x – ln (9 + e -x ) + C Answer Now