When You Push on a Stationary Object on a Horizontal

question 35

Multiple Choice

When you push on a stationary object on a horizontal surface and it doesn't move, what kind of force is most likely opposing your efforts?

• A) Static friction force
• B) Sliding friction force
• C) Lubricant friction force
• D) Gravitational force
• E) Normal Force

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Definitions:

Phosphorylation

The addition of a phosphate group to a molecule, a crucial process in biology that modulates the function of proteins and other molecules in cells.

Excitatory Postsynaptic Potential

A temporary increase in postsynaptic membrane potential due to the flow of positively charged ions into the postsynaptic cell, making it more likely to fire an action potential.

Depolarization

The reduction in the electrical charge difference across a cell's plasma membrane, leading to the initiation of an action potential.

Resting Potential

The electrical charge difference across the cell membrane while a neuron is at rest, typically around -70mV, enabling the potential for action potentials.