An object of mass m = 4.0kg , starting from rest, slides down an inclined plane of length / = 3.0m. The plane is inclined by an angle of e = 30 to the ground. The coefficient of kinetic friction u, 1 = 0.2 . At the bottom of the plane, the mass slides along a rough surface with a coefficient of kinetic friction uk 2 = 0.3 until it comes to rest. The goal of this problem is to find out how far the object slides along the rough surface. dk,2=0.3 (Part a) What is the kinetic energy of the mass when it just reaches the bottom of the inclined plane?

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Half Life

The concept of Half Life has numerous practical applications some of them includes figuring out the effective drug dosage to finding out when a radioactive becomes safe to use. If you look for a career in Nuclear Physics you will need this concept.