B. C. D. the ratio of the resultant force acting on the body to its acceleration. the ratio of the weight of the body to its acceleration. the amount of matter in the body. the ratio of the gravitational mass of the body to its weight. 11.
The following mistakes were made when carrying out the experiment. What effect does each have on the calculated molar mass? Be specific. For example, too large because… Only part of the pipet was immersed in the boiling water, so the temperature in part of the pipet was less than that of the water bath. If the temperature was less than the water bath in some places because only part of the pipet was immersed in the boiling water, the molar mass calculated would become lower.
Pressure is defined as force per unit area. The SI units of pressure are newtons per square meter (N/m2), or pascals (Pa). 3. Slowly drag the temperature (T) slider back and forth. (Note: In this Gizmo, the Kelvin scale is used to measure temperature.
Gravitational potential energy of an object (Ep) of mass m at a height of h above the Earth’s surface, is defined as Ep=mgh. It can therefore be summarised that for an object to accumulate gravitational potential energy, work/energy must be exerted on it. * Define gravitational potential energy as the work done to move an object from a very large distance away to a point in a gravitational field Ep = -Gm1m2r * As stated before, gravitational potential energy is defined as the energy of a mass due to its position within a gravitational field. It can also be defined, however, that the force of attraction between a planet and an object (gravitation) will become zero at an infant distance away from the planet. We can therefore define
The concentration is measured in molarity. Molarity is the measure of moles of solute per liter of solution. The rate law helps one find solution's reaction order. If the reaction order is zero, the graphical representation is concentration vs. time, and the slope of the line is the negative rate constant. If the reaction is first order, its graphical representation is seen as ln[A] (natural log of concentration) vs. time, and the slope of its like is also the negative rate constant.
The change in enthalpy relies on the concentration of the salt solution, because different concentrations will produce different enthalpies. There is an equation to determine how much of this heat energy is lost or gained when a reaction is performed. Q = c m (T1-T2) Where: q is the energy in Joules C is the heat capacity, measured in joules per gram per degree Celsius M is the mass of the solution, measured in grams J is the joules G is the grams of water T is the temperature ΔH=ΔE + PΔV = (q p +w) – w = q p Procedure: 1. Follow instructions 1-9 in Appendix A-1 to initialize the MeasureNet workstation. a.
EXPERIMENTAL DATA: Table 1: Measured values from experimental data Resistor Measured Value 101 Ω Capacitor 1 μF Amplitude of voltage 5v Phase difference 58.752º Peak to peak voltage 10 v Amplitude of current 2.53 mA ANSWERS TO THE POST LAB REPORT: Q. 1. Dividw the amplitude of the signal generator voltage measured by the oscilloscope by √ and compares it with the measured value by voltmeter. Answer: Here given, Vm = 5 V Dividing Amplitude of voltage Vm by √2, 5 √2 = 3.54 Comment: Both values were not matching. There have more than 10% discrepancy.
The maximum frictional force that must be overcome before movement is able to begin is μsFN. If you apply a constant force to pull an object along a horizontal surface at a constant speed, then the frictional force opposing the motion is equal and opposite to the applied force, Fp. Therefore, Fp = Ff. The normal force is equal and opposite to the object’s weight when the object is on a horizontal surface and the applied force is horizontal. The question to be answered by performing this lab is how can the coefficient of static and kinetic friction be determined for an object on a horizontal surface?
Boyle scientifically varied the pressure and measured the volume of the gas. These measurements were performed using a fixed amount of gas and a constant temperature. In this way Boyle was able to examine the pressure-volume relationship without complications from other factors such as changes in temperature or amount of gas. Boyle’s law states that at constant temperature for a fixed mass, the absolute pressure and the volume of a gas are contrarily proportional. The law can also be stated in a slightly different manner, that the product of absolute pressure and volume is always constant.
4 Discussion Discuss the implications of (a) a low oxygen charging pressure (below 30 atm. ), (b) excessive fuel sample, and (c) if the bomb was pressurized with air at 30 atm. (a) At a lower oxygen charging pressure, there would be smaller oxygen quantities during combustion. This would result in a slower rate of combustion for the fuel due to lesser oxygen molecules at a lower pressure. A slower rate of combustion would in turn lead to inefficient burning and hence the gross calorific value would differ.