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- https://phys.libretexts.org/Workbench/NATSCI-1A/PHYSC-11_Text_(FCC)/03%3A_Motion/3.02%3A_Motion_in_One-Dimension/3.2.09%3A_Position_vs._Time_GraphsIn a position-time graph, the velocity of the moving object is represented by the slope, or steepness, of the graph line. If the graph line is horizontal, like the line after time = 5 seconds in Graph...In a position-time graph, the velocity of the moving object is represented by the slope, or steepness, of the graph line. If the graph line is horizontal, like the line after time = 5 seconds in Graph 2 in the Figure below, then the slope is zero and so is the velocity. The steeper the line is, the greater the slope of the line is and the faster the object’s motion is changing.
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/10%3A_Forces/10.02%3A_WeightThe gravitational force of the moon is one-sixth the magnitude of the gravitational force of the Earth; the weight of the moon rock on the moon will be one-sixth the weight of the moon rock on the Ear...The gravitational force of the moon is one-sixth the magnitude of the gravitational force of the Earth; the weight of the moon rock on the moon will be one-sixth the weight of the moon rock on the Earth’s surface.
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/10%3A_Forces/10.05%3A_FrictionThe coefficient of kinetic friction between box A and the table is 0.20. (Ignore the masses of the rope and the pulley and any friction in the pulley.) The mass of box A is 5.0 kg and the mass of box ...The coefficient of kinetic friction between box A and the table is 0.20. (Ignore the masses of the rope and the pulley and any friction in the pulley.) The mass of box A is 5.0 kg and the mass of box B is 2.0 kg. The force acting to move the system is the weight of box B, and the force resisting the movement is the force of friction between the table and box A.
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/08%3A_Energy_Physics_and_Chemistry/8.03%3A_Thermochemical_Equations/8.3.02%3A_Environment-_GasA better estimate may be the Lower Heating Value (LHV) which is adjusted by adding the heat of vaporization of water, and heat required to raise the temperature of reactants to the combustion temperat...A better estimate may be the Lower Heating Value (LHV) which is adjusted by adding the heat of vaporization of water, and heat required to raise the temperature of reactants to the combustion temperature and products to 150 o C (an arbitrarily chosen standard). This is still different from the LHV because of the heat required to change the temperature of the reactants and products from the standard temperature (25 o C) to the combustion temperature.
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/09%3A_Motion/9.02%3A_Introduction-_Fundamentals_of_Motion-_Scientific_Overview/9.2.04%3A_Vector_AdditionThe sum of the two vectors is the vector that begins at the origin of the first vector and goes to the ending of the second vector, as shown below. The resultant, or sum, vector would be the vector fr...The sum of the two vectors is the vector that begins at the origin of the first vector and goes to the ending of the second vector, as shown below. The resultant, or sum, vector would be the vector from the origin of the first vector to the arrowhead of the last vector; the magnitude and direction of this sum vector would then be measured.
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/09%3A_Motion/9.02%3A_Introduction-_Fundamentals_of_Motion-_Scientific_Overview/9.2.03%3A_Resolving_Vectors_into_ComponentsOne of the methods we can use to add these vectors is to resolve each one into a pair of vectors that lay on the north-south and east-west axes. The two vectors we are to add is a force of 65 N at 30°...One of the methods we can use to add these vectors is to resolve each one into a pair of vectors that lay on the north-south and east-west axes. The two vectors we are to add is a force of 65 N at 30° north of east and a force of 35 N at 60° north of west. Using trigonometry, we can resolve (break down) each of these vectors into a pair of vectors that lay on the axial lines (shown in red above).
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/09%3A_Motion/9.03%3A_Motion_in_One-Dimension/9.3.04%3A_Instantaneous_VelocityIf the object is moving with constant velocity, then the instantaneous velocity at every moment, the average velocity, and the constant velocity are all the same. In the image above, the red line is t...If the object is moving with constant velocity, then the instantaneous velocity at every moment, the average velocity, and the constant velocity are all the same. In the image above, the red line is the position vs time graph and the blue line is an approximated slope for the line at t=2.5 seconds. For constant velocity motion, the slope gives the constant velocity, the average velocity, and the instantaneous velocity at every point.
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/06%3A_Physical_and_Chemical_Reactions/6.08%3A_Factors_Affecting_Reaction_RatesThe rate of a chemical reaction is affected by several parameters. Reactions involving two phases proceed more rapidly when there is greater surface area contact. If temperature or reactant concentrat...The rate of a chemical reaction is affected by several parameters. Reactions involving two phases proceed more rapidly when there is greater surface area contact. If temperature or reactant concentration is increased, the rate of a given reaction generally increases as well. A catalyst can increase the rate of a reaction by providing an alternative pathway that causes the activation energy of the reaction to decrease.
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/08%3A_Energy_Physics_and_Chemistry/8.04%3A_Work_and_Energy/8.4.02%3A_Forms_of_EnergyThat electrical energy moves through wires to homes and businesses where it is used to perform a variety of tasks which all require energy. (In all of these examples, not all of the initial energy is ...That electrical energy moves through wires to homes and businesses where it is used to perform a variety of tasks which all require energy. (In all of these examples, not all of the initial energy is converted into the forms mentioned. Just as we read through our forms of energy looking for examples of position or storage as clues for types of potential energy, we can also read through our forms of energy for examples of movement for types of kinetic energy.
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/11%3A_Electricity/11.03%3A_Static_Electricity/11.3.03%3A_Electric_FieldsIf a proton is placed in a uniform electric field so that the electric force on the proton just balances its weight, what is the magnitude and direction of the field? If you determined the electric fi...If a proton is placed in a uniform electric field so that the electric force on the proton just balances its weight, what is the magnitude and direction of the field? If you determined the electric field intensity in a field using a test charge of 1.0×10 −6 C and then repeated the process with a test charge of 2.0×10 −6 C, would the forces on the charges be the same? What is the relationship between the direction of the electric field and the direction of the electric force?
- https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/10%3A_Forces/10.04%3A_Newton's_Third_LawIt is frequently the case that one of the objects moves as a result of the force applied but the motion of the other object in the opposite direction is not apparent. How does the horse-cart system mo...It is frequently the case that one of the objects moves as a result of the force applied but the motion of the other object in the opposite direction is not apparent. How does the horse-cart system move if the cart pulls on the horse with the same exact force and in the opposite direction as the horse pulls on the cart? (Beware, there are many misconceptions related to this example!
