A force on a particle depends on position such that F(x) = (3.00 N/m2)x2 + (6.00 N/m)x for a particle constrained to move along the x-axis. What work is done by this force on a particle that moves from x = 0.00 m to x = 2.00 m?
A) 10.0 J
B) 20.0 J
C) -48.0 J
D) 24.0 J
E) 48.0 J
B
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Projectile Motion: A boy kicks a football from ground level with an initial velocity of 20 m/s at an angle of 30° above the horizontal. What is the horizontal distance to the point where the football hits the ground if we neglect air resistance?
A. 20 m B. 35 m C. 18 m D. 60 m E. 30.0 m
A body of related and rigorously tested theories can be pieced together into a much larger description of nature called a hypothesis.
Indicate whether the statement is true or false.
Calculate the intensity level in dB of a sound wave that has an intensity of 15 × 10^?4 W/m2
a. 20 b. 200 c. 92 d. 9 e. 10
For the following balanced reaction, which of the following is a gas?
2 Na(l) + Cl2(g) ? 2 NaCl(s) A) Na B) 2 Na C) Cl2 D) Cl E) NaCl