Question 6 Plank Exercises - Intro You are doing plank exercises (see the image below), and you are motionless. Your body is horizontal, with your toes in contact with the ground, and the palms of your hands flat on the ground. Purple arrows represent the Normal Forces of the ground on the hands and on the feet, and the Blue arrow represents the Weight force. Question 6 Plank Exercises - Part A Consider your feet to be your rotation axis (yellow circle in figure), compare the magnitude of the clockwise torque due to the Normal force of the floor on your hands (leftmost purple arrow) with the counterclockwise torque due to your body weight (blue arrow). Question 6 Plank Exercises - Part B Compare the size of the upwards Normal force of the ground on your hand to the downwards Weight force on your body.
Latent heat and phase change
A physical process in which a conversion among the basic states or phases of matter, i.e., solid, liquid, and gas takes place under the effect of a certain temperature and pressure is referred to as a phase change. Generally, the phase change of a substance occurs when heat transfer takes place between the substance and its surroundings. Based on the direction in which heat transfer takes place, different types of phase changes can occur.
Triple Point of Water
The branch of physics in which observer deals with temperature related properties is called thermodynamics.
Boiling Point of Water
Everyday examples of boiling is, boiling milk, heating water. One would have observed that when we heat water it goes through various stages and at one point bubbles show in water, and water keeps splashing with bubbles bursting, we in layman terms say that water is boiling.
Freezing Point of Water
In general, the freezing point of water is 0° Celsius, or 32° Fahrenheit. This is the temperature at which water will ordinarily change from its liquid state to its solid state (ice). However, there are certain conditions that can affect the freezing point of water. For example, a liquid may be supercooled or contain impurities so that it does not freeze at the ordinary freezing point.
This is a multiple part question, please help with what you are able to, thank you so much.
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