A 1200 kg car is moving at 5.0 m/s EAST. It strikes an 1800 kg car at rest. The cars have an elastic collision and move in the EAST or WEST direction. The relative velocity between the cars after the collision is
A. 3.0 m/s WEST.
B. 1.0 m/s EAST.
C. 4.0 m/s EAST.
D. 5.0 m/s EAST.
E. 1.0 m/s WEST.
D. 5.0 m/s EAST.
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Determine the maximum heat transport through a heat pipe having an effective length of 2 meters and an effective nickel powder wick area of 20 cm2 if the pipe is operating at 800 K.
What will be an ideal response?
Twenty kilometers is
a. 200,000 m. b. 20,000 m. c. 2,000 m. d. 200 m. e. 0.02 m.
The combining of two nuclei to form a larger nucleus with the release of energy is
a. nuclear fission. b. nuclear fusion. c. neutron activation. d. nuclear emission. e. beta decay.
A particle (charge = +40 ?C) is located on the x axis at the point x = ?20 cm, and a second particle (charge = ?50 ?C) is placed on the x axis at x = +30 cm. What is the magnitude of the total electrostatic force on a third particle (charge = ?4.0 ?C) placed at the origin (x = 0)?
a. 41 N b. 16 N c. 56 N d. 35 N e. 72 N