Which of the following statements about scientific models is true?
What will be an ideal response?
a model can be used to explain and predict real phenomena
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A wire is 1.50 m long and has a diameter of 1.50 mm. The tensile modulus of the wire is 
If a force of 400 N is applied to end of the wire, then the increase in length of the wire is
A. 5.48 mm. B. 4.28 mm. C. 3.95 mm. D. 3.84 mm. E. 3.45 mm.
Volcanism is more likely on a planet that
A) is closer to the Sun. B) is struck often by meteors and solar system debris. C) has high internal temperature. D) doesn't have an atmosphere or oceans.
A square coil, enclosing an area with sides 2.75 cm long, is wrapped with 1 875 turns of wire. A uniform magnetic field perpendicular to its plane is turned on and increases to 0.390 T during an interval of 1.70 s. What average voltage is induced in the coil?
a. 0.325 V b. 0.553 V c. 1.73 V d. 0.118 V e. 1.82 V
Which statements must be true about the surface of a charged conductor in which no charge is moving? (There could be more than one correct choice.)
A) The electric field is zero at the surface. B) The electric potential of the surface is zero. C) The electric field is constant at the surface. D) The electric potential is constant over the surface. E) The electric field is perpendicular to the surface.