The interstate on-ramp is 1.5 km West of your home, and on leaving for grandmother’s house you are only able to accomplish an average velocity of 12 km/hr between your home and the on-ramp. At the onramp, you wait for traffic, for 2.0 min – and then are able to proceed toward grandmother’s house. If you wish to arrive there, which is 15 km South of the onramp, over a river and through some woods, in a total elapsed time of 25.0 minutes, what average speed must you maintain on the interstate highway?
A. 51 km/hr
B. 67 km/hr
C. 36 km/hr
D. none of these.
B. 67 km/hr
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A) 8 B) 9 C) 3 D) 4 E) 10
Stars within a cluster that are at the turnoff point
a. have life expectancies that are equal to the age of the cluster. b. are stars that are just becoming white dwarfs. c. are stars that are just entering the main sequence portion of their evolution. d. are stars that are about to supernova. e. are stars that are generally spectral type G stars.
The diagrams below show two uniformly charged spheres. The charge on the right sphere is 3 times as large as the charge on the left sphere. Which force diagram best represents the magnitudes and directions of the electric forces on the two spheres?
The Earth's atmosphere blocks most forms of electromagnetic radiation from entering except for ____________________ and ____________________
Fill in the blank(s) with correct word