Don’t confuse mass and weight as mass is actually the amount of ‘stuff’ that makes up an object measured in kilograms. Weight is the force calculated by Weight (N) = Mass (kg) x Gravitational field strength (N/kg) W m The gravitational field strength on Earth is taken as 10N/kg. A resultant force is the sum of forces acting on an object. 2N 4N 4N Resultant force = 2N + 4N = 6N to the right g 2N
For most purposes Newton's laws of gravity apply, with minor modifications to take the general theory of relativity into account. 2. Inertia - A property of matter by which it continues in its existing state of rest or uniform motion in a straight line, unless that state is changed by an external force. 3. Potential Energy - Is the energy stored in an object due to its position in a force field or in a system due to its configuration.
The concept is the same. The only trick is to keep track of which value is the actual amount, and which is the theoretical amount. Refer to the sample calculations for more insight. Equipment 100 or 250 mL beaker Watchglass Bunsen burner Wire gauze Iron ring NaHCO3 Unknown sample Examples Percent Yield from a Pure Sample A 0.685 g sample of Ca(HCO3)2 is decomposed by heating to form CaCO3. When the sample is cooled it
Description and Theories A. Principles and Theories Used to Obtain our Result An conventional spring, when subjected the weight (w=mg) of an object at one of its terminations, will displace a certain distance, x, with an equal and opposite force, F, being created in the spring of which opposes the pull of the weight. This conventional spring will become significantly distorted if it is subjected to a large enough weight and the force, F, will only be able to return the spring to its original configuration once the burden is removed. The force that will restore the spring to its original configuration is directly proportional to the displacement that occurred. The following equation represents this relationship where k denotes the spring constant or stiffness of the spring, F=-kx Since x symbolizes the displacement or change in the length of the spring the above equation can now be surmised in the following manner, F=mg=-k∆l This new form makes it evident that a linear proportion exists between the plot of F as function of changing in length, ∆, thus confirming the spring does in fact obey Hooke’s Law.
Tin's actual atomic radius is 140 pm. Use the math equation below to determine the percent error of your estimated value. Percent error = fraction: | actual value minus experimental (estimated value | over actual value × 100 This equation means that you subtract to find the difference between the actual value (given in this problem) and the experimental value (estimated from the graph). The numerator is in an absolute value sign, so the difference should always be positive. Take that difference and divide by the actual value (given in this problem) of tin’s atomic radius.
1. Does the ideal Gas Law do a reasonable job at predicting the behavior of the gas undergoing changes in temperature, pressure, and volume? Justify your answer with supporting evidence. Considering most gases don’t follow the ideal standards of the Ideal Gas Law, the law itself still provides reasonable calculations in predicting the behavior of gas. As long as we were able to identity two out of the three unknown variables, we could use the formula: PV=nRT to calculate the unknown value.
Finally, we analyze the errors in both parts of the lab by propagation by substitution and compare the theoretical-experimental values using errors. III. Results: The theoretical buoyant forces for the sphere, the small cylinder, the block, and the big cylinder are 0.297N, 0.131N, 0.369N, and
P1V1=P2V2 3. Explain how your experiment results further prove Boyle’s law. Answer: As the pressure increased, the volume of the gas decreased. When multiplying the pressure change with the volume change, the product was always the same. This further proved Boyle’s Law.
In what sense is the Newtonian universe simpler than Ptolemy’s? Suppose observations had shown that the two did equally well at explaining the data. Construct an argument to say that Newton’s universe should still be preferred. The idea that the universe works mechanically, like a clock. It is called Newtonian, because it began from the Newtonian discovery of the laws of gravity and world motion.
When an object demonstrates a constant acceleration, the velocity of the object will change either increasing or decreasing with the same rate while traveling in the same direction. During this experiment, we used the equationH=12gt2 . From this equation, h denotes height, g represents acceleration due to gravity (9.8 m/s2), and t stands for time. The variables in this equation are all accounted for with the exception of g. The height is the distance from the bottom of the ball to the top of the pad (measured in meters). The time (t) corresponds to how long it took the ball to travel after being released from the clip to the pad