Over a million students use our free study notes to help them with their homework
The patient is injected with a radioactive isotope with short half-life, for eg Fluorine-18. This isotope decays into positrons. The area damaged with tumour requires more blood supply compared to the hea...
The formula for pressure is Pressure = Force / AreaIf the force is 400N and the area is 120 cm2, the pressure is equal to 400/120, which is 3.33 N/cm2
Essentially that objects have a top speed falling through air to the ground, which is called terminal velocity. This is because we are surrounded by air, so when moving, objects have to push past the air ...
X-rays can be used to look at skeletons and find out whether a bone is broken. Gamma rays can be used to sterilise things such as food and medical equipment.
Given that the drop is small enough it produces a semi sphere on screen of liquid due to surface tension. This acts like a powerful convex lens for the light coming from pixels on the phone screen hence a...
←
12
13
14
15
16
→
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
