If a solid metal sphere and a hollow metal sphere of equal diameters are each given the same charge, the electric field ( ) midway between the sphere center and the surface is
A) greater for the solid sphere than for the hollow sphere.
B) greater for the hollow sphere than for the solid sphere.
C) zero for both.
D) equal in magnitude for both, but one is opposite in direction from the other.
C
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An accepted value of KIc is obtained from a fracture test where the fracture surface is _________ to the tensile loading direction.
Fill in the blank(s) with the appropriate word(s).
A block is placed in oscillation on a frictionless horizontal surface attached to a spring that requires 125 N for the block to be stretched 15 cm away from equilibrium. From this position it is released, and oscillates with a period of 0.25 s. What is the mass of the block?
A. 0.66 kg B. 4.1 kg C. 1.3 kg D. 5.3 kg
A metal having a work function of 2.4 eV is illuminated with monochromatic light whose photon energy is 4.0 eV. What is the maximum kinetic energy of the photoelectrons produced by this light? (h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)
A) 5.5 × 10-19 J B) 2.6 × 10-19 J C) 3.8 × 10-19 J D) 4.7 × 10-19 J E) 6.4 × 10-19 J
For the titanium with a 2 % pre-strain in Figure 7.9, what grain size would result in a yield stress of 1000 MPa? You can use the results of Example Problem 7.2 to determine your answer.
What will be an ideal response?