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Problem: When a high-speed passenger train traveling at vP = 133 km/h rounds a bend, the engineer is shocked to see that a locomotive has improperly entered onto the track from a siding and is a distance D = 724 m ahead. The locomotive is moving at vL = 30 km/h. The engineer of the passenger train immediately applies the brakes. Assume that an x axis extends in the direction of motion.
Part A: What must be the constant acceleration along that axis if a collision is to be just avoided?
Please explain each step and equations used for above problem.
A 1.9 kg block is attached to a spring by spring constant 12 N/m. While the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 40 cm/s. What is the amplitude of the subsequent oscillations?
A solenoid 2 centimeter long consists of 2297 loops of wire. If the magnetic field inside the solenoid is 4 T, find the magnitude of the current that flows through it
Calculate the number of joules of kinetic energy that a 1 kg parrot has when it flies at 6 m/s. Kinetic Energy: KE = (1/2)mv2
A light bulb is connected to a 240 Vwall socket. The current in the bulb depends on the time t according to the relation I = (2.121 A) sin[ (439.6Hz) t ]. What is the resistance of the bulb's filament?
What would be the minimum width of the mirror if you are willing to accept that you must use two eyes to see the full width of your face
An electron is a subatomic particle (m = 9.11 10-31 kg) that is subject to electric forces. Find the magnitudes of the net force acting on the electron
Assume you added to the single slit an identical slit a distance d=0.25mm away from the first. Draw the resulting interference pattern you may expect on the same screen. What happens when we increase the distance among slits? What happens in the limi..
An experiment you're designing needs a gas with = 1.60. You recall from your physics class that no individual gas has this value, but it occurs to you that you could produce a gas with = 1.60 by mixing together a monatomic gas and a diatomic gas.
A cosmic ray travels 60km through the earth's atmosphere in 450us , How long does the journey take according to the cosmic ray
A wooden block with equal sides of 4 cm is floating in water. If the density of the block is half the density of water, how far is it from the water to the top of the block?
x = 2 + 3t - t^2, Where x is in meters and t is in seconds, Determine At the time is the object at rest
A crate with a weight of 50N rests on a horizontal surface. A person pulls horizontally on it with a force of 10N and it does not move. To start it moving, a second person pulls vertically upward on the crate. If the coefficient of static friction is..
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