A single conservative force Fx = (6.0x - 12) N (x is in m) acts on a particle moving along the x axis. The potential energy associated with this force is assigned a value of +20 J at x = 0 . What is the potential energy at x = 3.0 m?
a. +11 J
b. +29 J
c. +9.0 J
d. -9.0 J
e. +20 J
B
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A 7.0-kg rock is subject to a variable force given by the equation F(x) = 6.0 N - (2.0 N/m)x + (6.0 N/m2)x2 If the rock initially is at rest at the origin, find its speed when it has moved 9.0 m
What will be an ideal response?
You do not see your image when you look at a flat rough aluminum surface because of specular reflection
a. True b. False Indicate whether the statement is true or false
The rate of heat loss of a planet is proportional to its _______________, thus the smaller the world, the faster it is for heat to escape
Fill in the blank(s) with correct word
A double-convex thin lens has radii of curvature of magnitude 46 cm, and it is made of glass of index of refraction 1.60. What is the focal length of this lens?
A) infinite B) -30 cm C) 18 cm D) 38 cm E) -19 cm