Physics Homework Aid
Physics holds significant importance among the natural sciences, elucidating life's wonders and ranking among the most challenging subjects to master.
QuestionAI is a rich and user-friendly physics problem solver for novice physicists, enabling exploration of atomic properties and interactions, alongside molecular trajectories under various forces. Furthermore, you can delve into the mysteries concealed amidst galaxies with fellow physics enthusiasts. Boldly pose your conjectures and queries to the AI, and authoritative answers will readily emerge.
- What name is given to the time taken for half of the radioactive nuclei in a sample to decay?
- a) Name the device that measures current. square b) To measure the current of a lamp , should this device be placed in series or in parallel to the lamp? In series In parallel Either
- Which piece of equipment can be us ed to mea sure atmo spheric pres sure? Enter your an swer
- Equation F_(lift)=(rho _(out)-rho _(in))times Vtimes g A hot air balloon has a volume of 2500 cubic meters. The density of the air outside the balloon is 1.225kg/m^wedge 3 and the density of the hot air inside the balloon is 0.95kg/m^wedge 3 Using the gravitational constant 10m/s^wedge 2 calculate the following: 1. Calculate the lifting force in newtons using F_(lift)=(rho _(out)-rho _(in))times Vtimes g 2. Convert newtons to kg by dividing your answer by 10 then tell me how many kilograms of weight the hot air balloon can carry.
- 3 A gardener pushes a lawnmower over his lawn. He exerts an average force of 24N. By the time he has finished mowing he has done 2160J of work. (a) (i) How far has the gardener pushed the mower in doing this work? You are advised to show your working out.