Podcast
Questions and Answers
How is an object's kinetic energy calculated?
How is an object's kinetic energy calculated?
- ½mv² (correct)
- mv²
- m²v
- mv
Which of the following is a correct unit of power?
Which of the following is a correct unit of power?
- Watt (W) (correct)
- Calorie (Cal)
- Joule (J)
- Ampere (A)
What is the formula for calculating work done?
What is the formula for calculating work done?
- Power x Time (P.t)
- Mass x Acceleration (m.a)
- Force x Distance (F.s) (correct)
- Pressure x Volume (P.v)
Which of the following is not a unit of power?
Which of the following is not a unit of power?
What phenomenon occurs when the refractive index of a medium is greater than that of another medium for total internal reflection?
What phenomenon occurs when the refractive index of a medium is greater than that of another medium for total internal reflection?
Flashcards
Kinetic Energy
Kinetic Energy
Kinetic energy is the energy of motion. It is directly proportional to the mass of the object and the square of its velocity.
Work Done
Work Done
Work is done when a force causes an object to move a certain distance. It is calculated by multiplying the force by the displacement.
Power
Power
Power is the rate at which work is done. It measures how quickly energy is transferred or converted.
Refractive Index
Refractive Index
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Total Internal Reflection
Total Internal Reflection
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Study Notes
Physics Exam Review
- Kinetic Energy Equation: Kinetic energy (KE) = 1/2 * mass * velocity²
- Work Equation: Work = Force * distance
- Power Equation: Power = Work / time
- Units of Work: Joules (J)
- Units of Power: Watts (W)
- Units of Force: Newtons (N)
- Units of Distance: Meters (m)
- Units of Time: Seconds (s)
- Units of Mass: Kilograms (kg)
- Units of Velocity: Meters per second (m/s)
Light Reflection and Refraction
- Refraction: Bending of light as it passes from one medium to another
- Angle of Incidence: Angle between the incident ray and the normal
- Angle of Refraction: Angle between the refracted ray and the normal
- Normal: Perpendicular line to the surface where light hits
- Medium: Material through which light travels
- Law of Reflection: The angle of incidence equals the angle of reflection.
- Law of Refraction (Snell's Law): describes how light changes direction when passing from one transparent medium to another.
Multiple Choice Questions
- Question 1: The correct expression for calculating kinetic energy is: (correct option is likely provided in the image, needs data from image).
- Questions 2 - 9: Multiple choice questions regarding different physics concepts. Answers to these are dependent on the correct options available in the image.
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Description
Prepare for your physics exam with this comprehensive review covering kinetic energy, work, power, and essential concepts of light reflection and refraction. Test your understanding of key equations and principles that govern motion and light behavior.
