Constellations are
What will be an ideal response?
random projected patterns of stars on which we have defined patterns that differ from culture to culture
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Two piano strings are simultaneously played – their mass and length are identical, but the tensions differ. If the first string resonates with a fundamental frequency of 330 Hz, and its tension is 1.2% greater than that of the second string, what is the fundamental frequency of the second string?
A. 328 Hz B. 326 Hz C. 336 Hz D. 334 Hz
An object with a mass of 10 kg is moving along a horizontal surface. At a certain point it has a speed of 28 m/s
If the coefficient of friction between the object and the surface is 0.40, how far will the object go before it comes to a stop? Use g = 10 m/s2. A) 98 cm B) 61 m C) 98 m D) 23 m E) 61 cm
The first minerals to crystallize from a cooling magma have a
A) high melting point and a low silica content. B) low melting point and a high silica content. C) high melting point and a high silica content. D) low melting point and a low silica content.
The electrical conductivity of a metal is not proportional to which of the following?
(a) Free-electron density (b) Electron mobility (c) Electron charge (d) Atomic number