A 2000-kg sailboat experiences an eastward force of 2000 N by the ocean tide and a wind force against its sails with magnitude of 6000 N directed toward the northwest (45° N of W). What is the magnitude of the resultant acceleration?
a. 2.2 m/s2
c. 1.5 m/s2
b. 2.4 m/s2
d. 3.0 m/s2
B
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Fill in the blank(s) with correct word
High-voltage wires in power lines are not high-current wires because the current in them is
A) not the same as the current that powers the distant load. B) proportional to the voltage drop from beginning to end of each line, rather low. C) both of these D) neither of these
Process of Science: What is Occam's razor?
A) The idea that scientists should prefer the simpler of two models that agree equally well with observations. B) The principle that everyone should agree on a theory before it is considered correct. C) A long, steep cliff on Mercury that may have been produced as the planet contracted as it formed. D) The principal that any theory can be verified by others. E) An unusual implement that Professor Occam uses to remove facial hair.
Larger batteries have higher output voltages
a. True b. False Indicate whether the statement is true or false