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Three identical train cars, coupled together, are rolling east at 1.6 m/s . A fourth car traveling east at 4.4 m/s catches up with the three and couples to make a four-car train. A moment later, the train cars hit a fifth car that was at rest on the tracks, and it couples to make a five-car train. What is the speed of the five-car train?
Critically analyse and evaluate the arguments for, and against, for each of the case studies. Which arguments do you consider to be more compelling
Lu Technology, Co., manufactures CDs and DVDs for computer software and entertainment companies. Lu uses job order costing and has a perpetual inventory system.
A uniform marble rolls down a symmetric bowl, starting from rest at the top of the left side. The top of each side is a distance above the bottom of the bowl. How far up the smooth side will the marble go
The reaction of CrCl3 with liquid NH3 to give yellow [Cr(NH3)6]Cl3 often has a low yield, since the reaction tends to stop with the production of pink [Cr(NH3)5Cl]Cl2
Do you think that non-human animals have interests?
Choose one of the oxidative protection enzymes, other than superoxide dismutase. Describe the metal containing active site, the general structure of the protein and the specific chemistry it catalyzes.
What we ought to do with respect to the environment
flask containing a mixture of A and B at equilibrium was discovered, and the concentration of A at room temperature was determined experimentally to be 3.1 x 10^-2 mol/L. What is the concentration of B
A capacitor with capacitance C = 4.10·10^-6 F is connected to an AC power source having a peak value of 6.0 V and f = 130 Hz. Find the reactance of the capacitor
L ?^2=-?^2 ?^2 ?^2=(1/(?sin?^2 ?) ?/(??^2 )+1/sin? ?/?? sin? ?/??) b) For the l = 2, ml = -1 state determine the average angular momentum and the average angular momentum in the z-axis
Red light travels at 2.07×108 m/s in a particular type of oil. What is the index of refraction for red light in the oil
A permanent magnet is hung from a string ( balanced ) and pointed in an East - West orientation and released. Describe its motion
How many radians does a point on Earth's surface move in 6 hours as a result of the Earth's rotation? What is the speed of a point on the equator
You are a professional frontier re-enactor who specializes in making lead shot. To do this you put 1.3 kg of ice into 1.3 kg of water, both at 0 C, into an insulated bucket.
Find the drift velocity of conduction electrons in a gold wire of diameter 2.88 mm when a current of 0.123 A flows in it
Protons are projected with an initial velocity v0 = 10360 m/s into a region where a uniform electric field E = 670 N/C is present. The protons are to hit a target that lies a horizontal distance of 1.27 mm from the point where protons are launched..
Over a time interval of 1.92 years, the velocity of a planet orbiting a distant star reverses direction, changing from +19.7 km/s to -19.1 km/s. determine the total change in the planet's velocity
A uniform 2.45- kg spinning disk with a radius of 0.323 m is brought to rest by a brake-pad pressed against the side 0.226 m from the rotation axis. What frictional force was applied by the brake pad
A sheet of plywood 1.39 cm thick is used to make a cabinet door 55.5 cm wide by 69.5 cm tall, what is the moment of inertia of the door about the hinges
The vertical displacement y(x,t) of a string stretched along the horizontal x-axis is given by y(x,t) = (6.00 mm) cos[(3.25 m-1)x - (7.22 rad/s)t]. What is the distance between adjacent crests of the wave
A sphere of mass ofm= 1.40 kg is first placed directly on the plate of an electronic scale. The scale shows 13.73 N as the weight of the object. Calculate the density of the sphere
a man walks westward on ship with a speed of 4km/hr. the ships propeller drives it 15km/hr south. what is the actual speed of the man relative to earth
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