If the applied electric field has a frequency of 1016 Hz, the type of polarization present in a dielectric is:
(a) Electron current flow
(b) Electronic
(c) Ionic
(d) Orientational
(b) Electronic
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A 1500-kg car moving at 25 m/s hits an initially uncompressed horizontal ideal spring with spring constant (force constant) of 2.0 × 106 N/m. What is the maximum distance the spring compresses?
A) 0.17 m B) 0.34 m C) 0.51 m D) 0.68 m
The luminosity of the Sun is about 4 x 1015watts (joules per second)
Indicate whether the statement is true or false
The visual pink glow of the Great Nebula in Orion
a. is a Herbig-Haro object. b. is a reflection nebula of dust. c. is an emission nebula of thin gas. d. contains only young low mass stars. e. is believed to be about 5 billion years old.
Rotational Kinetic Energy: A wheel having a moment of inertia of 5.00 kg ? m2 starts from rest and accelerates under a constant torque of 3.00 N ? m for 8.00 s. What is the wheel's rotational kinetic energy at the end of 8.00 s?
A. 57.6 J B. 64.0 J C. 78.8 J D. 122 J