When we add a displacement vector to another displacement vector, the result is
a. a velocity.
b. an acceleration.
c. another displacement.
d. a scalar.
c
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A car starts out when the air temperature is 288 K and the absolute (total) air pressure in the tires is 500 kPa. After driving a while,
the temperature of the air in the tires increases to 298 K. What is the pressure in the tires at that point, assuming their volume does not change? A) 129 kPa B) 483 kPa C) 507 kPa D) 517 kPa E) 532 kPa
What do we call a specific pattern of stars in the sky, often named for an animal?
A. a star animal B. a cluster C. the ecliptic D. a constellation
Eukaryotes
A) are made of two cells fused together B) are all unicellular C) can be unicellular or multicellular D) are all multicellular
Uniform Circular Motion: One way that future space stations may create artificial gravity is by rotating the station. Consider a cylindrical space station 380 m in diameter that is rotating about its longitudinal axis. Astronauts walk on the inside surface of the space station. How long will it take for each rotation of the cylinder if it is to provide "normal" gravity for the astronauts?
A. 28 s B. 39 s C. 6.2 s D. 4.4 s