A violinist discovers while tuning her violin that her string is flat (has a lower frequency). She should
A. tighten the string.
B. loosen the string.
C. play faster.
A. tighten the string.
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A(n) ____________________ is the distance that light would travel in one year
Fill in the blank(s) with correct word
As viewed by us here on Earth, where does time run slowest?
A) the surface of a white dwarf B) the surface of the Sun C) the surface of the Earth D) the top of Mount Everest on Earth E) in empty space
A boy jumps at a speed of 20.0 m/s at an angle of 25.0° above the horizontal. What is the horizontal component of the boy's velocity?
A) 18.1 m/s B) 15.6 m/s C) 8.5 m/s D) 12.6 m/s E) 20.0 m/s
A straight wire carries a current of 40 A in a uniform magnetic field (magnitude = 80 mT). If the force per unit length on this wire is 2.0 N/m, determine the angle between the wire and the magnetic field
a. either 39° or 141° b. either 25° or 155° c. either 70° or 110° d. either 42° or 138° e. either 65° or 115°