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You're investigating a subway accident in which a train derailed while rounding an unbanked curve of radius 132 m , and you're asked to estimate whether the train exceeded the 45 km/h- speed limit for this curve. You interview a passenger who had been standing and holding onto a strap; she noticed that an unused strap was hanging at about a 15 degree angle to the vertical just before the accident. A. What do you conclude? The train didn't exceed the 45 speed limit on this curve. or The train did exceed the 45 speed limit on this curve, thus provoking the derailment.
A graph of the Force applied to a spring and the distance it stretches F vs. x yields some valuable information. What does the slope of the linear line
compute the total energy radiated by the Sun each second.
Photographic cameras on spy satellites supposedly can read the license plate of a car on the ground. How large is the diameter of the camera required for such a feat
Three moles of a monatomic ideal gas that is initially at a pressure of 1.50 * 10^5 Pa, How much work is done by the gas
The electric potential at the center of a square is 1 V when a charge of +Q is located at one of the square's corners. What is the electric potential at the square's center when identical charges of -Q are placed at the other three corners of the squ..
Consider two masses (M=50 kg, m = 10 kg) connected by a string as shown below. Find the tension in the connecting string
In figure, a ball is thrown up onto a roof, landing some timelater at height h = 20.0 m above and d = 30.0 mhorizontally from the release point. The ball's path just beforelanding is angled at θ = 60.0o with the horizontal roof. (a)Find the time o..
What is the current in the circuit when all six lamps and the heater are turned on? If the circuit has a fuse which will melt if the current exceeds 12 A, will fuse melt.
Find the moment of inertia tensor of a cone rotating around its axis. One axis of the body frame is along the axis of the cone, and the origin at the tip.
a solid wood door 1.04 m wide is hung in a metal door way at 0.0degc with a clearance of 2.2 mm on the side. if the
the fermilab tevatron could accelerate protons and anti-protons to kinetic energies of 1000 gev 1 tev. by how much in
question1a 58 kg pole vaulter running at 14 ms vaults over the bar. her speed while she is above the bar is 1.7 ms.
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