Over a million students use our free study notes to help them with their homework
In beta-minus decay, a neutron decays into a proton plus an electron. For alpha decay, the mass number decreases by 4 and the atomic number decreases by 2. For beta-minus decay, the mass number remains th...
When the nucleus of an atom is unstable, it occasionally emits either waves or particles to stabilise itself.
The three types of radiation are: Alpha particles, Beta particles and Gamma waves.
This is a very common mechanics question you can be asked in a physics exam (or a M1 maths exam!). The key to solving it is to realise that the ball is in freefall, so it is only acted on by gravity. Sinc...
Firstly, we note that the acceleration is constant, therefore this problem should be tackled with the SUVAT equations. Let's write down the information we have: s we are asked to find this u = 50 m/s v =...
The static friction force holding the object on the slope is given by Fr where R = mg by Newton's second law of motion. We use a < sign as the static friction is a reaction force And the force drag...
←
144
145
146
147
148
→
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
