The career in the nuclear laboratory, atomic research centre is most concerned with the study of radioactive isotopes. Also the nuclear thermal power plant, advance military services weapon, research and development are concerned with the study of radioactive isotopes.
two heavy bags of groceries upstairs to your
kitchen. Will you do more work on the bags if
you carry them up one at a time? Explain.
Answer:
no both remains same...
Explanation:
because the work done is given by the product of the both the masses added (m+m) Displacement
and second time when you carry the bags individually it comes out to be the same m×displacement + m×displacement
The difference between atoms and molecules is that atoms has a nucleus that is surrounded by electrons and Molecules are atoms bonded together by single, double or triple the bond.
Gravity is present when a block hangs at rest from a piece of rope. The block remains in equilibrium, suspended by the tension in the rope which is equal and opposite to the gravitational force acting on the block.
In the scenario where a block hangs at rest from the ceiling by a piece of rope, gravity is indeed present. The force of gravity, often referred to as weight, acts downwards on the block. However, the block is not falling because there is an equal and opposite upward force - this is the tension in the rope. According to Newton's second law, the tension in the rope must be equal to the weight of the block for it to remain in equilibrium and not move. The tension in the rope and the gravitational force on the block are equal in magnitude but opposite in direction, which sums up to zero net force, hence the block is at rest.
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