Newton’s second law of motion is expressed as a mathematical equation: Fnet = ma (Force = mass*acceleration) A significant notion of this equation is that an object accelerates in the direction of the new force, and acceleration is created by the net force. The SI unit for force in the above equation is Newton (N), SI unit for accelerations is metre per second squared (m/s2) and the SI unit for mass is kilograms (kg). The objective of this experiment was to show the relationship between acceleration and force in a frictionless environment and to show the concept of mass (Lab#1). Other equations used in this experiment were: V22 = V12 + 2ad; used to find the acceleration for each weight V1 = Lt1 and V2 = Lt1; both used to find the acceleration Materials * Two vernier photogate timers * String * Glider * Blower * Air—cushioned track * Weights and Hanger * Pulley and clamps * Vernier Lab Pro Procedure and Observations 1. Two photogate timers, 60 cm apart, were set over the air track.
79. ANS: Yes, speed and direction will change. 80. ANS: Both cause waves to bend. Refraction occurs when waves change speed when changing media.
TEST BANK Chapter 1 MEASUREMENT OF WORK, POWER, AND ENERGY EXPENDITURE 1. Work is defined as a. the ability to transform energy from one state to another. b. the ability to utilize oxygen. c. force times distance. d. distance times power output.
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. 4. Kinetic Energy - An object is the energy that it possesses due to its motion. 5. Friction - Is the force resisting the relative motion of solid surfaces, fluid layers, and material elements sliding against each other.
Are they all moving at the same speed? 2. How do the particles interact with the walls and lid of the container? These interactions contribute to the pressure on the walls of the container. Pressure is defined as force per unit area.
Define heat of reaction. -Is the overall energy absorbed or released during the solution process. 2. Distinguish between exothermic and endothermic processes. -Exothermic is energy needed to break the bonds is less than the energy released and endothermic is the energy needed to break the bonds is greater than the energy released.
Note: I want the direction of the conventional current. 5. Consider the circuit in Figure 3, where R1 = 5.00×102Ω, R2 = 1.00×103Ω, and VB = 10.0V . (a) What is the equivalent resistance Req of the circuit? (b) Solve the circuit.
11. The velocity of a body of mass m changes by an amount ∆v in a time ∆t. The impulse given to the body is equal to A. B. C. D. m∆t . ∆v .
In the other, aluminum leftovers, the activity series was used to understand how and why the reaction took place and stoichiometry was used to predict the amount of aluminum that should have reacted in the following equation: 3CuCl2 * 2H2O (aq) + 2Al (s) 2AlCl3 (aq) + 3Cu (s) + 6H2O Stoichiometry’s importance in the laboratory is well defined in the results of the previously mentioned experiments. Materials:
Some nuclei magnetic are caused when the charge and spin are possessed and give various properties on the proton under investigation in which their behavior in an external magnetic field is influenced. Properties include the magnetic moment of the rotating nucleus will precess around the magnetic field direction under the influence of external magnetic field. The frequency of precession of a proton under investigation is directly proportional to the magnetic field strength. The frequency and precessional frequency of the proton under investigation must be matched with each other after irradiated with the radio frequency (electromagnetic) radiation in order to investigate the resonance. The proton is raised to the higher energy spin state after absorbing the electromagnetic energy.