A 10.0-kg piece of aluminum (which has a specific heat of 900 J/kg/°C) is warmed so that its temperature increases by 6.0 C°. How much heat was transferred into it?
a. 5.4E+4 J
b. 9.0E–2 J
c. 1.1E+4 J
d. 3.7E–4 J
a
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Two different continuous water waves on the surface of a pond would be expected to have roughly the same
A) amplitude. B) frequency. C) wavelengths. D) wave speeds. E) energy.
According to the Hubble law, where H = 17 km/s/106 lightyears, what is the velocity of recession of a quasar at a distance of 2 billion lightyears from Earth?
a. 0.75 c b. 0.33 c c. 0.55 c d. 0.11 c e. 0.93 c
Which of the following type(s) of materials is(are) repelled when a magnet is brought near by?
a. paramagnetic b. diamagnetic c. ferromagnetic d. paramagnetic and ferromagnetic e. paramagnetic, ferromagnetic, and diamagnetic
By what factor is the self-inductance of a solenoid changed if its length is doubled and its number of coil turns is tripled?
a. 2/9 c. 3/4 b. 9/2 d. 4/3