Over a million students use our free study notes to help them with their homework
X-Rays are a form of electromagnetic radiation similar to gamma radiation except X-Rays are produced when an electron is slowed down from a high velocity and gamma waves are produced from radioactive m...
A pilot is capable of flying a plane with mass 6500kg, in a horizontal circle of radius r, at a constant speed of 75m/s. This is achieved by flying the jet with its wings at 35° to the horizontal. Calc...
Capacitors are made up of two plates (& so the symbol) which you can imagine as 'boxes' of opposite polarity and are seperated with insulation.
As capacitors charge, the negative box...
wave: interference experiments e.g. double slit experiment
particles: photo-electric effect
time is equal to time in free fall i.e. 50m=0.5gt^2 -> t=root(50m*2/g)=1.019s
horizontal distance is then tv= 1.019s20m/s=20.38m
←
139
140
141
142
143
→
Internet Safety
Payment Security
Cyber
Essentials
Comprehensive K-12 personalized learning
Immersive learning for 25 languages
Trusted tutors for 300 subjects
35,000 worksheets, games, and lesson plans
Adaptive learning for English vocabulary
Fast and accurate language certification
Essential reference for synonyms and antonyms
Comprehensive resource for word definitions and usage
Spanish-English dictionary, translator, and learning resources
French-English dictionary, translator, and learning
Diccionario ingles-espanol, traductor y sitio de apremdizaje
Fun educational games for kids
