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.

The distance between Earth and Mars is 78 million kilometres. The speed of light is 3times 10^5km/s Calculate the time, in seconds, it takes for light to travel from Earth to Mars Give your answer in standard form.

1.1 Add the following labels to the diagram below. bolling condensing freezing gas liquid melting solid __ __ __ 12 Use the words to complete the sentences. regular In solids, the porticles are very close together in a __ pattern. The porticles __ around a fixed position Solids have a fixed __ Solids connot be easily compressed because their particles are __ with no spoce to move into.

pressure=(101ce)/(area) A block exerts a force of 5 N on the ground. Calculate the pressure the block exerts on the ground , in N/m^2 , when it is a) flat on the ground, so that the area of its base is 0.04m^2 b) standing up on its side, so that the area of its base is 0.025m^2

In a newly opened estate the planner had a specified number of occupants for the estate and the electricity board gave them a transformer that could serve the specified number of occupants However the number of occupants eventually increased beyond the planned number due to sub division of the plots and the transformer could not serve the population any more. All people started to complain that their electrical appliances, security lights and security alarms are no longer working and this has brought insecurity in the estate. Hint; Power input of the transformer=12000W, voltage output=240V and the output current= 20A Task As a physics student; (a) Explain why the transformer could no longer serve the big population of the estate. (b) Suggest the possible causes of power losses in a transformer and how they can be minimized. (c) Explain how an electric bell (alarm)works in order to alert people.

A metal sculpture has a total volume of 1250cm^3 and a mass of 7.9 kg. Work out its density,in grams per cubic centimetre (g/cm^3) ) - Give your answer to 2 d.p.