Starting from one oasis, a camel walks 25 km in a direction 30° south of west and then walks 30 km toward the north to a second oasis. What is the direction from the first oasis to the second oasis?
a. 21° N of W
b. 39° W of N
c. 69° N of W
d. 51° W of N
e. 42° W of N
D
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Suppose a car has a 100,000 mile 10 year warranty on the wheels and axles of a car. How may turns will the wheels of 0.80-m diameter make if both the mileage and time warranties run out simultaneously and what will be the average angular velocities of the wheel? Assume that a mile = m and that a year is s.
Approximately how long have cosmic microwave background photons been traveling through space?
A) 5000 years B) 380,000 years C) 14 billion years D) It depends on which direction they come from.
A doubly charged ion with velocity 6.0 × 106 m/s moves in a path of radius 30. cm in a magnetic field of 0.80 T in a mass spectrometer. What is the mass of this ion?
A) 12.8 × 10-27 kg B) 16.4 × 10-27 kg C) 6.68 × 10-27 kg D) 3.34 × 10-27 kg E) 8.22 × 10-27 kg
The theoretical and observed tensile yield strength of whiskers is approximately equal to _________ of the elastic modulus.
Fill in the blank(s) with the appropriate word(s).