Three forces are exerted on an object and as a result the object moves with a constant velocity. One force is 60.0 N along the +x-axis, and the second is 75.0 N along the +y-axis. What is the magnitude of the third force?
A) 135 N
B) 15.0 N
C) 48.0 N
D) 67.5 N
E) 96.0 N
E
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A package of supplies is dropped from a plane, and one second later a second package is dropped. Neglecting air resistance, the distance between the falling packages will
A) be constant. B) decrease. C) increase. D) depend on their weight. E) depend on the speed of the plane.
Optical fibers work because of dispersion of light
a. True b. False Indicate whether the statement is true or false
The field just outside the surface of a long conducting cylinder which has a 2.0-cm radius points radially outward and has a magnitude of 200 N/C. What is the charge density on the surface of the cylinder?
a. 2.7 nC/m2 b. 1.8 nC/m2 c. 3.5 nC/m2 d. 4.4 nC/m2 e. 0.90 nC/m2
According to special relativity, at speeds approaching the speed of light, the kinetic energy of a moving object is not equal to 1/2 mv2
Indicate whether the statement is true or false