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A rollercoaster car starts at rest on top of a frictionless hill ofheight 17 m, slides down to ground level,and then into a frictionless loop of radius 5 m.
When the car is at the side of the loop (levelwith the center), find the magnitude of the car's tangential acceleration:
A golfer hits a shot to a green that is elevated 3.00 m above the point where the ball is struck. find the speed of the ball just before it lands
a solenoid had an inductance of l and carries a current of 15 a if the current goes from 15 a to 0 a in time fo 75 ms
Presume the needle moves 7.5 mm from its highest to its lowest position and it makes 26 stitches in 9.1 s. What is the highest needle speed.
An initially stationary hovercraft sits on a large lake. At time t=0 it accelerates due north at a rate of 1.2 m/s2 for 10 s, what is the velocity of the hovercraft at time t=40 s
An especially violent lightning bolt has an average current of 2.25x 103 A lasting 0.271 s. How much charge is delivered to the ground by the lightning bolt?
A 6,000 lb car is traveling SW at 40 mph. it is hit by another car that weighs 7,000 lb and is traveling NNE at 50 mph. What is the speed and direction of the cars immediately after the collision
A series AC circuit contains a resistor, an inductor of 200 mH, a capacitor of 5.60 µF, and a source with ?Vmax = 240 V operating at 50.0 Hz. Calculate the inductive reactance
A solid iron sphere and a solid lead sphere of the same size are each suspended by strings and are submerged in a tank of water. (Note that the density of lead is greater than that of iron.) Which of the following statements are valid?
On an ice rink, two skaters of equal mass grab hands and spin in a mutual circle once every 2.6s. how hard are they pulling on one another
Unpolarized passes through two polarizers that are oriented 65 degrees to each other. What is the orientation of the polarizers
a spring is compressed by 2cm and launches a block up an incline (ignore friction). what maximum distance will it travel
A sport utility vehicle (SUV) and a sports car travel around the same horizontal curve. The SUV has a static stability factor of 0.74, At what maximum speed can the sports car negotiate the curve without rolling over
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