Physics Questions & Answers

Physics Questions & Answers Absolute 0 - Kelvin Scale - CORRECT ANSWER- Absolute 0 - atoms have as little kinetic energy as possible Absolute 0 = -273°C 50 Kelvin = -223°C 15°C = 288 Kelvin Acceleration = - CORRECT ANSWER- Change in Velocity / Time Taken Angle of Incidence is equal to critical angle - CORRECT ANSWERAngle of Incidence is less than critical angle - CORRECT ANSWERAngle of Incidence is more than critical angle - CORRECT ANSWERArtificial Earth Satellites - CORRECT ANSWER- Have orbital period of 1 day = geostationary satellites, used for communications Average Speed = - CORRECT ANSWER- distance / time Brownian Motion - CORRECT ANSWER- Small particles have a constant, rapid and random movement - small particles can move larger particles - causes pressure This discovery was proved with the use of pollen grains Charge = - CORRECT ANSWER- current x time Circuit Rules - CORRECT ANSWER- Increase voltage = more current will flow Increase resistance = less current will flow Conclusion of Marsdens experiment - CORRECT ANSWER- Most of atom is empty space Nucleus is small Nucleus is dense Nucleus is positive Conduction - CORRECT ANSWER- Process where vibrating particles pass on their kinetic energy Convection - CORRECT ANSWER- Particles from their hotter region to the cooler region and take their heat energy with them Current - CORRECT ANSWER- Rate of flow of Charge..