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What fraction of energy will be lost when a moving cart of mass m inelastically collides with a stationary cart of mass 2m?
0.75 kg block of ice is sliding by you on a very slippery floor at 2.5 m/s. As it goes by, you give it a kick perpendicular to its path. Your foot is in contact with the ice block for 0.003 seconds. The block eventually slides at an angle of 22 de..
A generator produces 240kW of electric power at 7.2 kV. The current is transmitted to a remote village through wires with a total resistance of15 ohms? What is the power loss due to resistance in the wires?
A pump discharges water at a rate 100kg/s with a guage pressure of 2atms. the flow is transported by a 10 cm diameter pipe up to an elevation of 5m
A sample of radioactive isotopes contains two different nuclides, labeled A and B. Initially, the sample composition is 1:1, i.e., the same number of nuclei A as nuclei B. The half-life of A is 5 hours and, that of B, 10 hours. What is the expected r..
q1. a 46 kg girl is standing on a 145 kg plank. the plank initially at rest is free to slide on a frozen lake which is
an 80 kg construction worker sits down 2.0 m from the end of a 1450 kg steel beam to eat his lunch. the cable
A transformer has 400 primary turns and 1510 secondary turns. The input voltage is 120 V and the output current is 16.0 A. Assume 100 percent efficiency. What is the output voltage
A cylinder with a piston contains 0.250 mol of oxygen at 240000 pascal and 355 kelvin. The oxygen may be treated as an ideal gas. The gas first expands isobarically to twice its its original volume. It is y then compressed isothermally back to its..
The potential dissimilarity between a pair of oppositely charged parallel plates is 367 V. If the spacing among the plates is tripled without altering the charge on the plates, what is the new potential dissimilarity between the plates?
A vertical force F is applied to a block of mass m that lies on a floor. what happens to the magnitude of normal force on the block from the floor as magnitude F is increased from zero if force F is downward?
A cubical piece of heat-shield-tile from the space shuttle measures 0.15 m on a side and has a thermal conductivity of 0.065J/(s·m·C°). The outer surface of the tile is heated to a temperature of 1240°C, while the inner surface is maintained at a tem..
what is the potential difference between the plates. A particular freely falling object requires 1.85 s to travel the last 31.0 m before it hits the ground. From what height above the ground did it fall.
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