For general projectile motion if we neglect air, the horizontal component of a projectile's velocity
A) remains zero.
B) remains a non-zero constant.
C) continuously increases.
D) continuously decreases.
E) first decreases and then increases.
B
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A capacitor consists of a set of two parallel plates of area A separated by a distance d. This capacitor is connected to a battery and charged until its plates carry charges +Q and -Q
If the separation between the plates is doubled, the electrical energy stored in the capacitor will A) double. B) quadruple. C) be cut in half. D) be cut in fourth. E) not change.
Newton found that gravity varied with the ________ of the distance between the two bodies pulling on each other
Fill in the blank(s) with correct word
A large pipe organ at a church has valves that allow either one end of the pipe to be open and the other end closed, or else both ends open. If when one end is open and the other end is closed the pipe can produce a fundamental frequency of 40 Hz, what will be the fundamental frequency when both ends of the pipe are open?
1.80 Hz 2.40 Hz. 3.20 Hz. 4.10 Hz.
A long straight wire carries a current. A positive charge moves toward the wire in a direction perpendicular to the wire. The direction of the force on the charge will be
A. parallel to the wire opposite the direction of the current. B. parallel to the wire in the direction of the current. C. There is no force D. opposite the direction of the charge's velocity. E. in the direction of the charge's velocity.