Energy and Mass: If the mass of a 1.0-kg book could be entirely converted into electrical energy, how many kW ? h of energy would that generate? (c = 3.0 × 108 m/s)
Fill in the blank(s) with the appropriate word(s).
2.5 × 1010 kW ? h
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A 2200. kg auto moving at 12.0 m/s runs into a 3800. kg truck which is moving in the same direction at 5.00 m/s. The collision is perfectly inelastic
(a) What is the speed of the auto immediately after the collision? (b) What percentage kinetic energy did the truck gain in the collision?
A 10.0-kg piece of aluminum (which has a specific heat of 900 J/kg/°C) is warmed so that its temperature increases by 6.0 C°. How much heat was transferred into it?
a. 5.4E+4 J b. 9.0E–2 J c. 1.1E+4 J d. 3.7E–4 J
A wire lying in the plane of this page carries a current directly toward the top of the page
What is the direction of the magnetic force this current produces on an electron that is moving perpendicular to the page and outward from it on the left side of the wire? A) perpendicular to the page and towards you B) perpendicular to the page and away from you C) toward the top of the page D) toward the bottom of the page E) The force is zero.
The majority of earthquakes occur where
A) lithospheric plates meet. B) the asthenosphere touches the lithosphere. C) the land surface is made of unconsolidated sediments. D) narrow zones of land touch.