If Q = 16 nC, a = 3.0 m, and b = 4.0 m, what is the magnitude of the electric field at point P?
a.
33 N/C
b.
31 N/C
c.
24 N/C
d.
19 N/C
e.
13 N/C
c
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The type of elements present in a gas can be determined by studying the ____
a. number of ionized atoms in the gas b. energy of the electrons being emitted by the gas c. number of photons being absorbed or emitted by the gas d. wavelengths of photons absorbed or emitted from the gas e. number of excited atoms in the gas
A mass of 40.0 grams is attached to a vertical spring with a spring constant k = 20.0 N/m and lowered slowly until the spring stops stretching. How much does the spring stretch?
A) 0.00200 m B) 0.0196 m C) 0.0816 m D) 0.800 m E) 0.200 m
A 150-kg crate is placed on an adjustable inclined plane. If the crate slides down the incline with an acceleration of 0.70 m/s2 when the incline angle is 20°, then what should the incline angle be for the crate to slide down the plane at constant speed? (g = 9.8 m/s2)
a. 21° b. 16° c. 11° d. 26° e. 6°
An atom can be excited into a higher energy state by absorbing a __________
Fill in the blank(s) with correct word