In a location where the train tracks run parallel to a road, a high speed train traveling at 60 m/s passes a car traveling at 30 m/s in the opposite direction. How long does it take for the train to be 180 m away from the car?
A. 2.0 s
B. 3.0 s
C. 6.0 s
D. 9.0 s
E. 18.0 s
Answer: A
You might also like to view...
Which of the following is a result of Earth revolving around the Sun?
A) The lunar phases B) The occurrence of day and night C) The yearly cycle D) The daily climatic changes
A 4,000 kg satellite is traveling in a circular orbit 200 km above the surface of the Earth. A 3.00 gram marble is dropped inside the satellite. What is the force of gravity on the marble as viewed by the observers on the Earth? 
A. 0.405 N B. 0.362 N C. 0.277 N D. 0.202 N E. 0.185 N
Cloud chambers have been replaced by bubble chambers because
A) the radioactive clouds were too dangerous to work with. B) the density of fluids is greater than the density of vapors. C) bubble chambers tend to be larger and more expensive. D) gamma rays are visible in bubble chambers, but not in cloud chambers.
Two long parallel wires separated by 4.0 mm each carry a current of 24 A. These two currents are in the same direction. What is the magnitude of the magnetic field at a point that is between the two wires and 1.0 mm from one of the two wires?
a. 4.8 mT b. 6.4 mT c. 3.2 mT d. 9.6 mT e. 5.3 mT