Work and energy
... According to the Work-Energy theorem, the work done on an object, by the net force acting on it, is equal to the change in kinetic energy of the body Work = D K F d cosQ = Kf - Ki ...
... According to the Work-Energy theorem, the work done on an object, by the net force acting on it, is equal to the change in kinetic energy of the body Work = D K F d cosQ = Kf - Ki ...
T2 - Chemistry at Winthrop University
... _____18. An engineer is asked to design a playground slide such that the speed a child reaches at the bottom does not exceed 6.0 m/s. Determine the maximum height that the slide can be. a. 1.8 m b. 2.9 m c. 3.2 m d. 4.5 m e. 7.4 m _____19. The force component acting on an object along the displaceme ...
... _____18. An engineer is asked to design a playground slide such that the speed a child reaches at the bottom does not exceed 6.0 m/s. Determine the maximum height that the slide can be. a. 1.8 m b. 2.9 m c. 3.2 m d. 4.5 m e. 7.4 m _____19. The force component acting on an object along the displaceme ...
Energy, Work, and Simple Machines
... • The faster we do Work… the more powerful our action is • The slower we do that same Work… the less powerful our action is What makes the backhoe ...
... • The faster we do Work… the more powerful our action is • The slower we do that same Work… the less powerful our action is What makes the backhoe ...
Lect14
... • If only conservative forces are present, the total kinetic plus potential energy of a system is conserved. Mechanical Energy = Potential Energy (U) + Kinetic Energy (K) Conservative forces interchange U K (work done), but E = K + U is a constant. ΔE = ΔK + ΔU = 0 Work-kinetic energy theorem: ...
... • If only conservative forces are present, the total kinetic plus potential energy of a system is conserved. Mechanical Energy = Potential Energy (U) + Kinetic Energy (K) Conservative forces interchange U K (work done), but E = K + U is a constant. ΔE = ΔK + ΔU = 0 Work-kinetic energy theorem: ...
Answers
... 2. In every energy transformation there are two outcomes: 1. ___work_________ is done and 2._heat_______ is given off. 3. In a battery ___chemical_______________ energy is changed to electrical energy. 4. In which substance (solids, liquids, gases) do particles move the slowest? solids_______ 5. In ...
... 2. In every energy transformation there are two outcomes: 1. ___work_________ is done and 2._heat_______ is given off. 3. In a battery ___chemical_______________ energy is changed to electrical energy. 4. In which substance (solids, liquids, gases) do particles move the slowest? solids_______ 5. In ...
Exam.2
... 6. A 20.0-gram mass is attached to a 120 cm-long string as shown in Figure. The angle a is measured to be 18.0°. What is the speed of the mass? A) 1.95 m/s B) 3.82 m/s C) 1.18 m/s D) 1.09 m/s 7. An object is moving with constant velocity. Which of the following statements is true? A) A constant forc ...
... 6. A 20.0-gram mass is attached to a 120 cm-long string as shown in Figure. The angle a is measured to be 18.0°. What is the speed of the mass? A) 1.95 m/s B) 3.82 m/s C) 1.18 m/s D) 1.09 m/s 7. An object is moving with constant velocity. Which of the following statements is true? A) A constant forc ...
Chapter 15.1
... total potential energy of all the microscopic particles make up its thermal energy. When atoms move faster, the thermal energy increases and objects become warmer. ...
... total potential energy of all the microscopic particles make up its thermal energy. When atoms move faster, the thermal energy increases and objects become warmer. ...
Kinetic and Potential Energy
... it falls, what happens to it’s potential energy? What happens to it’s kinetic energy? As it falls, its velocity goes up, so its kinetic energy goes up. It also looses height so its potential energy goes down. However, mechanical energy stays the same ME = KE + PE ...
... it falls, what happens to it’s potential energy? What happens to it’s kinetic energy? As it falls, its velocity goes up, so its kinetic energy goes up. It also looses height so its potential energy goes down. However, mechanical energy stays the same ME = KE + PE ...
potential energy.
... space, they are often used for communication. • Nuclear energy - Nuclear power plants use fission – splitting the nuclei of atoms apart to release energy. The sun uses fusion – two hydrogen nuclei combine the larger helium nuclei. (A tiny amount of mass is lost in the process – which produces huge a ...
... space, they are often used for communication. • Nuclear energy - Nuclear power plants use fission – splitting the nuclei of atoms apart to release energy. The sun uses fusion – two hydrogen nuclei combine the larger helium nuclei. (A tiny amount of mass is lost in the process – which produces huge a ...
Review Game – Fly swatter questions
... Watts is the unit for… Kilograms is the unit for … Joules is the unit for … The Energy of motion is … When the skater is at the bottom of the half-pipe, the _______ energy is at its maximum What states that energy cannot be created nor destroyed? When a skater loses speed on the half-pipe, this loss ...
... Watts is the unit for… Kilograms is the unit for … Joules is the unit for … The Energy of motion is … When the skater is at the bottom of the half-pipe, the _______ energy is at its maximum What states that energy cannot be created nor destroyed? When a skater loses speed on the half-pipe, this loss ...
CTRII
... Which launch will cause the pendulum to swing the largest angle from the equilibrium position on the left side? A: Launch 1 ...
... Which launch will cause the pendulum to swing the largest angle from the equilibrium position on the left side? A: Launch 1 ...
Potential Energy Gravitational potential energy Spring potential
... 10. A water-skier lets go of the tow rope upon leaving the end of a jump ramp at a speed of 14.0 m/s. As the drawing indicates, the skier has a speed of 13.0 m/s at the highest point of the jump. Ignoring air resistance, determine the skier's height H above the top of the ramp at the highest point. ...
... 10. A water-skier lets go of the tow rope upon leaving the end of a jump ramp at a speed of 14.0 m/s. As the drawing indicates, the skier has a speed of 13.0 m/s at the highest point of the jump. Ignoring air resistance, determine the skier's height H above the top of the ramp at the highest point. ...
ENERGY CONVERSION AND CONSERVATION
... E = mc2; E = 1 kg x (3 x 108 m/sec)2 = 1 kg x 3 x 1016 m/sec = 3 x 1016 joules This problem is not really correct. The units used in this equation are not the ones an engineer would use, nor are all the variables in the equation presented, but it does represent the massive amounts of energy that can ...
... E = mc2; E = 1 kg x (3 x 108 m/sec)2 = 1 kg x 3 x 1016 m/sec = 3 x 1016 joules This problem is not really correct. The units used in this equation are not the ones an engineer would use, nor are all the variables in the equation presented, but it does represent the massive amounts of energy that can ...
Energy & Conservation of Energy Notes
... water below. What is the potential energy and the kinetic energy of the rock at the top of the hill and when it is halfway down? Its speed is 14 m/s at the ...
... water below. What is the potential energy and the kinetic energy of the rock at the top of the hill and when it is halfway down? Its speed is 14 m/s at the ...
Energy Transfer Activities - Tuckahoe Common School District
... • One form of energy can turn into another form. For example: – A ball thrown against the wall represents mechanical energy. The ball does not bounce back at the same speed, in part, because some of the mechanical energy is converted to sound and heat ...
... • One form of energy can turn into another form. For example: – A ball thrown against the wall represents mechanical energy. The ball does not bounce back at the same speed, in part, because some of the mechanical energy is converted to sound and heat ...
Physical Science Fourth Nine Weeks Exam Study Guide
... 19. Refraction occurs when a wave enters a new medium at an angle. 20. When a wave moves through an opening in a barrier, it bends and spreads out. 21. The ability to do work is called energy 22. Energy is measured in units called joules 23. The energy associated with motion is called kinetic energ ...
... 19. Refraction occurs when a wave enters a new medium at an angle. 20. When a wave moves through an opening in a barrier, it bends and spreads out. 21. The ability to do work is called energy 22. Energy is measured in units called joules 23. The energy associated with motion is called kinetic energ ...
Ideas about Work and Energy
... moving. Potential Energy (gravitational) = mgh. This is the energy an object has because it has height and the potential to fall. ...
... moving. Potential Energy (gravitational) = mgh. This is the energy an object has because it has height and the potential to fall. ...
Review: energy quiz
... Energy: The ability to do work or cause change. Potential Energy: Energy that is stored and held in readiness. ...
... Energy: The ability to do work or cause change. Potential Energy: Energy that is stored and held in readiness. ...