A scientific model is a mental conception that provides a framework that helps us think about some aspect of nature
Indicate whether the statement is true or false
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A long straight wire (diameter = 2.0 mm) carries a current of 25 A. What is the magnitude of the magnetic field 0.50 mm from the axis of the wire?
a. 5.0 mT b. 10 mT c. 0.63 mT d. 2.5 mT e. 0.01 mT
If a guitar string has a fundamental frequency of 250 Hz, what is the frequency of its third harmonic?
a. 250 Hz c. 1000 Hz b. 750 Hz d. 1500 Hz
A single-slit diffraction pattern is produced from a light source of wavelength 580 nm. The light goes through a single slit and onto a screen 1.0 m away. The first dark fringe is 5.8 mm from the central bright fringe. What is the slit width? (1 nm = 10-9 m)
a. 0.12 mm c. 0.081 mm b. 0.24 mm d. 0.10 mm
Which statement about the ecliptic is FALSE?
A) The Sun appears to move about a degree per day eastward long it. B) It is tilted 23.5 degrees with respect to the equator. C) The year is marked by the Sun's return to the same place along it. D) The Moon can never leave it, but moves twelve times faster than the Sun. E) The major planets stay close to it, but not always on it.