A 2.0 meter long Aluminum wire (R = 0.44 m?, ? = 2.82 × 10-8 ?-m, ? = 4.29 × 10-3 C-1 ) is connected in series to an 8.0 meter long Tungsten wire (R = 0.20 m?, ? = 5.6 × 10-8 ?-m, ? = 4.5 × 10-3 C-1)
What is the resistance of the combination if the wire is heated to 150.°C? Assume the initial temperature for both wires is room temperature (20°C). A) 0.78 m?
B) 0.88 m?
C) 0.69 m?
D) 1.00 m?
E) 0.64 m?
D
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(i) a sample of hydrogen gas, H2, at 0°C (ii) a sample of oxygen gas, O2, at 100°C
1.(i) 2.(ii) 3.They have the same average molecular speed. 4.It is impossible to tell.Hubble's galaxy classification diagram (the "tuning fork")
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Magnetic Field of a Current Loop: A flat circular coil having 57 turns of very thin wire has a diameter of 9.5 cm and carries 7.2 A of current. (?0 = 4? × 10-7 T ? m/A)(a) What is the strength of the magnetic field at the center of the coil?(b) If the same length of wire were used to make a coil with twice the original diameter, how large would the magnetic field at the center be when it carried the same current as before?
What will be an ideal response?
From Kepler's third law, a hypothetical planet that is twice as far from the Sun as Earth should have a period of _________________.
Fill in the blank(s) with the appropriate word(s).