Answer:
The correct answer is - option D. A person rubs a shoe on a rug, causing extra electrons to be transferred to the shoe.
Explanation:
Current electricity is a flow of charged particles that moves through space or any type of electrical conductor. Usually, the transfer of the electric current takes place through a wire. There are many examples of current electricity such as lightning and static electric charge.
Electric static charge is generated due to the imbalance of particles present on the surface or within the material, normally friction leads to this imbalance in particles of the material such as when a person rubs his shes on rug created an imbalance in the electrons and then transfer to the shoe.
Phospholipids have 2 faces or poles: one hydrophobic (the tails which "run away" from water) and one hydrophilic (the heads which "like" water).
This means that when in a double layer in a aqueous environment, the heads will face the water and the tails will face each other.
The answer is E. Excessive blood homocysteine levels is known as hyperhomocysteinemia and increases risk of cardiovascular disease.
1. gravitational potential energy
Yes, motion energy (kinetic energy) is transformed into gravitational potential energy as the rock falls.
2..When we push a huge rock, there is no transfer of muscular energy to the stationary rock. Also, there is no loss of energy because muscular energy is transferred into heat energy, which causes our body to become hot. From the conservation of energy we know that energy can neither be created nor destroyed, it can only be transformed from one form to another.
3 When the rock starts rolling down the hill it has kinetic energy. When the rock gets to the bottom of the hill and stops, it is no longer in motion therefore it no longer has kinetic energy, the energy has been converted back into potential energy.
Potential energy is transformed to kinetic energy.
