Are you attending lecture today?

1
Are you attending lecture today?

1. Yes
2. No

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2
A car goes forward along a level road at constant
velocity. The total force acting on the tires is

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.

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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 weight 50.0 kg
Contact area 26.0 cm2

1. 1.88 x 105 Pa
2. 2.65 x 105 Pa

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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,

1. only the lighter container slides outward off the
   turntable the heavier one stays on.
2. only the heavier container slides outward off the
   turntable the lighter one stays on.
3. both containers slide off the turntable at the
   same turntable speed.
4. the lighter container slides inward.
5. the heavier container slides inward.

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5
Evaluate the integral .

1. ex 9 ln (9 ex) C
2. ex 9 ln (9 ex) C
3. 9ex 9 ln (9 e-x) C
4. 9ex ln (9 e-x) C

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