About what fraction of Earth’s atmosphere is CO2?
A. 90%
B. 1%
C. less than 0.1%
Ans: C. less than 0.1%
You might also like to view...
If the temperature of the bubble described in problem T7T.8 was 320 K when it formed, what is its approximate final temperature when it reaches the surface?
A. 40 K B. 80 K C. 320 K D. 1280 K E. 2560 K F. Other (specify)
What produces the lobes in double-lobed radio galaxies?
a. an accretion disk b. a starburst event c. black-hole jets d. synchrotron radiation e. high redshifts
Saturn's upper atmosphere has an apparent helium surplus
Indicate whether the statement is true or false
A 10-g bullet moving horizontally with a speed of 1.8 km/s strikes and passes through a 5.0-kg block initially at rest on a horizontal frictionless surface. The bullet emerges from the block with a speed of 1.0 km/s. What is the kinetic energy of the block immediately after the bullet emerges?
a. 8.0 J b. 6.4 J c. 5.3 J d. 9.4 J e. 10 J