But there are so many incredible day trips to choose from, itâs worth taking a least one day to see something outside of the capital. 1  Top 5 Day Trips from Paris. 2  Castles and Palaces. 3  Gourmet Day Trips.  Cathedral Cities and Cute 1  Towns. Parks & Gardens.  WWI & WWII History and 1  Battlefields. Day Trips Abroad.
Understand power and energy. Watts are a measure of power, or how fast energy is used (energy over time). Joules is a measure of energy. In order to convert from watts to joules, you need to specify a length of time. The longer a current flows, the more energy it uses.
This gives the energy output in joules. 0.1 watt x 10 seconds equals 1 joule of electrical energy. 1  As joules are small units, and because appliances commonly use watts, milliwatts, and kilowatts to indicate how much power they use, utilities commonly measure their energy output in kilowatt-hours.ultiply force x distance. Now that we know how much force is actually going toward the direction of motion, we can calculate work as usual. Our problem tells us the sled moved 20 meters forward, so calculate 8.66 N x 20 m = 173.2 joules of work.