Several types of radiation may be emitted during radioactive decay. The equation represents
2 answers:
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Answer:
Option D: 1.5in in front of the target
Explanation:
The object distance is .
Because the surface is flat, the radius of curvature is infinity .
The incident index is and the transmitted index is
.
The single interface equation is
Substituting the quantities given in the problem,
The image distance is then
Therefore, the coin falls in front of the target
Answer:
2,352 Joules
Explanation:
At the ground, the barbell has a classical mechanical energy value of zero. There is no classical kinetic or potential energy for the barbell. The moment the man starts to lift the barbell, he does work on the barbell and transfers kinetic energy to it due to the motion. At its maximum height where the man lifts the barbell to a stop, the kinetic energy is zero because it transformed into gravitational potential energy stored in the gravitational field. Our reference point for potential was defined to be zero at the floor, therefore we can say that the gravitational potential energy at 2 meters is: