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James Stewart, 2002 Motocross/Supercross Rookie of the Year, is leading a race when he runs out of gas near the finish line. He is moving at 16 m/s when he enters a section of the course covered with sand where the effective coefficient of friction is 0.90.
Determine the distance the racer travels before coming to a stop.
A driver traveling at 59 km/h sees a chicken dash out onto the road and slams on the brakes. Accelerating at -7 m/s2, the car stops just in time 24.3 m down the road. What was the driver's reaction time (i.e., the time that elapsed before he engag..
An uncharged capacitor and a resistor are connected in series to a source of emf. If emf = 6.00 V, C = 16.0 µF, and R = 100 ?, find the maximum charge on the capacitor
The plates of a parallel-plate capacitor are 3.50mmapart, and each carries a charge of magnitude 75.0nC, What is the area of each plate
A 1500 kg car traveling at a speed of 20 m/s skids to a halt on wet concrete where kinetic friction= 0.20. How far are the skid marks.
A gas is expanded from a volume of 1.0 L to 2.8 L at a constant pressure of 3.0 atm Find the net work done during the complete cycle
Suppose the highway is icy and the coefficient of friction between the tires and pavement is only one-third what you find in part (a). Illustrate what should be the maximum speed of the car so it can round the curve safely?
A bat strikes a 0.145-kg baseball. Just before impact, the ball is traveling horizontally to the right at 60.0m/s, Find the horizontal component of the average force on the ball. Take the x-direction to be positive to the right
After a plant or animal dies the 14C content decreases with a half-life of 5730 years. what is the age (in years) of the ancient site
A hunter wishes to cross a river that is 2.10 km wide and that flows with a speed of 4.4 km/h. The hunter uses a small powerboat that moves at the maximum speed of 12.60 km/h with respect to the water.
In order to drop a Pyrex glass marble 1.003 in diameter through the hole in the plate, how much must the temperature of the system be raised? (Assume the plate and the marble are always at the same temperature.)
A bungee jumper with mass 60.0kg jumps from a high bridge. after reaching his lowest point, estimate the unstretched length of the bungee cord assuming SHM
A grandfather's clock is calibrated at a temperature of 20 C. The pendulum is a thin brass rod with a heavy mass attached to the end. On a hot day, when the temperature is 30 C, does the clock run fast or slow? How much time does it gain or lose i..
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