A 6.0-kg box slides down an inclined plane that makes an angle of 39° with the horizontal. If the coefficient of kinetic friction is 0.40, at what rate does the box accelerate down the slope?
A) 3.1 m/s2
B) 3.4 m/s2
C) 3.7 m/s2
D) 4.1 m/s2
A
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Which of the following aluminum alloys is not suitable for welding?
(a) 1100 (b) 3003 (c) 5052 (d) 7075-T6
The process where an element spontaneously changes into a different element (transmutation) by a change in the nucleus of an atom is called
A) radiometric dating. B) radioactive decay. C) radiometric decay. D) none of these
Variables of a certain type are called Cepheid variables because the first one discovered was in the _____________ Cepheus
Fill in the blank(s) with correct word
When one compares the relativistic kinetic energy to the classically calculated kinetic energy for a moving object, at which of the speeds listed below does the classical calculation give a greater value than the relativistic calculation?
a. 0.707c b. 0.5c c. 0.2c d. None of the above values will give such a result.