Calculates air volume, pressure loss, velocity, and duct size for rectangular or round ducts. Supports both imperial and metric units. Users input values to determine required dimensions and system performance.
Study for Sciences include keyword-based content from multiple exam boards. Users can access concise revision material written by high-achieving students. are organized clearly and can be reviewed directly within the .
Creates a displaying work shifts for each day of the year. Enter sequences and start dates to generate the schedule. Edit individual days to adjust shifts or mark as holidays. Includes public holidays and school vacations for over 30 countries.
Access sermon series, podcasts, and live streams for spiritual growth. Search by title, topic, or scripture. Stream audio and video content directly from a phone or tablet. Organize and retrieve content without physical media.
Learn from N5 to N1 with structured lessons and practice tests. Access a dictionary with meanings and examples. Mark items as known or unknown, favorite content, and select learning levels. Track progress through quizzes and review sessions.