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Three identical train cars, coupled together, are rolling east at speed . A fourth car traveling east at 2 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?
A somewhat longer cable replaces the old and is attached to the steel bar 5 m from its upper end, connecting to the same place on the wall as before and maintaining the same angle between the bar and the wall.
A block of aluminum weight 140.0 g is cooled from 98.4 degrees celcius to 62.2 degrees celcius with the release of 1080 J of heat. From this data calculate the specific heat of aluminum
The force stretching the D string on a certain guitar is 156 N. What is the speed of the waves on the string
A typical power plant uses some fuel as the source of heat (QH) to drive a heat engine that does work (W) to drive a generator that is connected to the electrical grid.What is rate of flow and How do we find the power
A 4.1 g coin sliding to the right at 26.2 cm/s makes an elastic head-on collision with a 12.3 g coin that is initially at rest. Find the final velocity of the other coin
What is the highest possible temperature of the spoon when you finally take it out of the cup?
In a mass spectrometer, a singly, negative charged ion having a particular velocity selected by using a magnetic field of .10 T perpendicular to an electric field of 1000 V/m. What is the mass of the ion
A 910 kg sports car collides into the rear end of a 2200 kg SUV stopped at a red light. calculates the speed of the sports car at impact
27 g of copper pellets are removed from a 300 C oven and immediately dropped into 120 mL of water at 21C in an insulated cup. What will the new water temperature be?
question1an airplane is flying horizontally with speed 1000 280 while an engine falls off. neglecting air resistance
discuss and compare the principles of the carnot cycle and the brayton cycle as two different thermodynamic cycles.
a 100 ohm resistor, a 0.100micro F capacitor, and a 300mH conductor are connected in series to a voltage source with amplitude 240 V, hat is the maximun voltage across the capacitorat resonance
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