(Originais Teachy 2023) - Question Medium 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?

In an experiment conducted in the Physics Laboratory, a group of students found that a wooden block floated in water with half of its volume submerged. Next, the same block was placed in oil where they found that it floated with $$\frac{1}{4}$$ of its volume emerged. From this information, we can affirm that the specific mass of the oil is:

An isovolumetric transformation is a chemical process in which the volume of a system is kept constant. In this process, the internal energy of the system can be changed through the transfer of heat between the system and the external environment. Which of the following statements is correct?

A student is observing an object through a converging lens with a focal length of 10 cm. The object is located 40 cm away from the lens. (Consider that the thin lens approximation is valid). Based on this information: 1) Calculate the position of the image formed by the lens. 2) Determine the size of the image relative to the size of the object, knowing that the lens obeys the Gauss equation (1/f = 1/p + 1/p'), where f is the focal distance of the lens, p is the distance from the object to the lens, and p' is the distance from the image to the lens, all measured in cm. Consider that the coordinate system used has its origin at the lens's optical center, with the main axis oriented positively to the right, and that real images have a positive sign and virtual images have a negative sign.