The quark structure of the neutron is udd
a. True
b. False
Indicate whether the statement is true or false
True
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A parallel-plate capacitor has plates of area 0.40 m2 and plate separation of 0.20 mm. The capacitor is connected across a 9.0-V potential source. (?0 = 8.85 × 10-12 C2/N • m2)
(a) What is the magnitude of the electric field between the plates? (b) What is the capacitance of the capacitor? (c) What is the magnitude of the charge on each plate of the capacitor?
Earth's thin, rocky, outer layer on which we live is called the
a. seismosphere. b. geosphere. c. asthenosphere. d. crust.
An extrinsic n-type semiconductor can be made from Group IV germanium by adding impurity atoms of:
(a) Group IV silicon (b) Group III aluminum (c) Gorup II magnesium (d) Group V arsenic
A box is pushed across a horizontal table at constant speed. Of the forces on it, which pair do we know are equal in magnitude because of Newton’s third law?
A. Normal force on the box and the weight of the box. B. Normal force on the box and the normal force on the table by the box. C. The force of kinetic friction on the box and the force applied to the box by the one pushing it. D. None of these are interaction pairs.