A 50.0-kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 26.0° below the horizontal is applied to the box
What is the minimum coefficient of static friction between the box and the surface required for the box to remain stationary? A) 0.441
B) 0.654
C) 0.375
D) 0.866
E) 0.406
C
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Because of its distance, the Sun does not have any effect on Earth's ocean tides.
Answer the following statement true (T) or false (F)
In brane-world theory, there are more _______ than we are accustomed to.
A. strings B. gluons C. monopoles D. dimensions E. leptons
A particle (m = 20 mg, q = ?5.0 ?C) moves in a uniform electric field of 60 N/C in the positive x direction. At t = 0, the particle is moving 25 m/s in the positive x direction and is passing through the origin. How far is the particle from the origin at t = 2.0 s?
a. 80 m b. 20 m c. 58 m d. 10 m e. 30 m
Elliptical galaxies
A) tend to be smaller than the other types of galaxies. B) have little in the way of dust and gas. C) are thought to be former starburst galaxies. D) All of the above