The pressure exerted by a gas is the result of
a. the Bernoulli effect
b. molecular collisions
c. Pascal's principle
d. the ideal gas law
e. none of the above
B
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Coulomb's Law: A point charge Q1 = +6.0 nC is at the point (0.30 m, 0.00 m); a charge Q2 = -1.0 nC is at (0.00 m, 0.10 m), and a charge Q3 = +5.0 nC is at (0.00 m, 0.00 m). What are the magnitude and direction of the net force on the +5.0-nC charge due to the other two charges? (k = 1/4??0 = 9.0 × 109 N ? m2/C2)
What will be an ideal response?
In comparison with other fundamental forces, the universal gravitational constant G indicates that gravity is
A) very weak. B) strong. C) very strong.
A scientific model is considered valid if it is consistent with
A) a single observation by an individual scientist B) the opinions of experts in the field C) repeated observations made by an individual scientist D) independent observations made by different scientists
Charge of uniform surface density (0.20 nC/m2) is distributed over the entire xy plane. Determine the magnitude of the electric field at any point having z = 2.0 m
a. 17 N/C b. 11 N/C c. 23 N/C d. 28 N/C e. 40 N/C