(Originais Teachy 2023) - Question Easy of Physics

The battery has negligible internal resistance, and the latent heat of fusion for ice is 3.34x J/kg. Therefore, what is the value of the rate (in g/s) at which this circuit will melt the ice?

A person with height $$\boldsymbol{h}$$ stands in front of a pinhole camera in order to produce an image on the opposite side of the camera that corresponds to three quarters $$(3 / 4)$$ of their height. Knowing that the pinhole camera has a depth $$\boldsymbol{d}$$, what will be the distance between the person and their image?

Your image O' and five observers: 1, 2, 3, 4, 5. Which alternative presents only the observers who see the object reflected in the mirror?

The city of Salvador, famous for its hills and elevators, is a perfect example to demonstrate the force of traction. The Lacerda Elevator, one of the main postcards of the city, transports thousands of people daily between the Upper Town and the Lower Town. Suppose one day, a group of 15 people with an average mass of 70kg decide to use the elevator at the same time. Considering the elevator's mass as 500kg and the acceleration due to gravity equal to 10 m/s², what would be the traction force on the elevator cable when it is at rest or moving at a constant speed?