Weekly Weather Report for Luzern, Switzerland. Looking at the weather in Luzern, Switzerland over the next 7 days, the maximum temperature will be 23â (or 73â) on Sunday 9th April at around 1 pm. In the same week the minimum temperature will be -2â (or 28â) on Friday 7th April at around 4 am.
The forces at work in buoyancy. Note that the object is floating because the upward force of buoyancy is equal to the downward force of gravity. In science, buoyancy ( /ËbÉÉª.Énsi, -Éntsi/ or /ËbuËjÉnsi, -jÉntsi/;) or upthrust, is an upward force exerted by a fluid that opposes the weight of an immersed object.
Buoyant force is the upward force that keeps things afloat. The buoyant force is equal to the weight of the water the boat displaces. To review buoyancy, have the students explore Buoyancy Basics, on the NOVA Online website.Discuss the diagrams and make sure students understand that the weight of water displaced equals the weight of the wood.ow, distribute the student page Buoyant Boats and the materials listed on that page. Make sure the students understand that they only get one piece of aluminum foil to build the boat. If it tears or gets a hole, they must find a way to repair it.