Physics

A) 36 W B) 4 W C) 15 W D) 144 W Answer: A Explanation: Electrical power is current times […]

A) Momentum B) Power C) Pressure D) Density Answer: B Explanation: Power measures work or energy transferred per unit time. […]

A) v = f/λ² B) v = fλ C) v = λ/f always D) v = f + λ Answer: […]

A) Nuclear binding energy B) Gravitational energy C) Electrical energy D) Sound energy only Answer: C Explanation: Photovoltaic materials convert […]

A) Third-class lever B) First-class lever C) Second-class lever D) Inclined plane Answer: A Explanation: The human forearm can act […]

A) Second-class lever B) Third-class lever C) First-class lever D) Screw Answer: C Explanation: A seesaw is a first-class lever […]

A) First-class lever B) Third-class lever C) Pulley D) Second-class lever Answer: D Explanation: A wheelbarrow is a familiar second-class […]

A) Efficiency B) Thermal dissipation C) Positive work D) Conservative force Answer: D Explanation: Conservative force refers to a force […]

A) Nonconservative force B) Hooke's law C) Potential energy reference D) Kinetic energy Answer: D Explanation: Kinetic energy refers to […]

A) Negative work B) Nonconservative force C) Spring constant D) Potential energy reference Answer: D Explanation: Potential energy reference refers […]