Let's solve Extended Body Balance exercises where we will analyze the magnitude TORQUE or also known as Moment of Force. Physics Platform http://professorpinguim.com.br Hugs and have a good class! ???? Professor Pinguim ______________________________ ???? Subscribe to the channel http://youtube.com/videofisicabr?sub_... ➡️ Instagram / professorpinguim ➡️ E-mail [email protected]➡➡ UFU 2019 - PHYSICS QUESTION 11 A circuit using a photovoltaic cell generator set and a resistor is assembled as shown in Figure A. The graph in Figure B indicates the Potential Difference (DDP) curves as a function of the electric current of the photovoltaic cell generator set and the resistor indicated in Figure A. QUESTION 12 Thermometers are equipment built to perform temperature measurements indirectly. The thermometer is assembled to use a physical property whose variations are associated with temperature, called thermometric property. The temperature value is determined and indicated according to the physical situation detected, and for calibration purposes, it is necessary to use references or standards. QUESTION 13 In addition to being able to be observed in small objects and machines built by man, magnetic fields are also present on an astronomical scale. Stars, such as the Sun, produce intense fields, creating around them what is called the magnetosphere. [...] There are stellar objects capable of producing absurdly high magnetic fields, such as those found in pulsars – the remains of giant stars, consisting only of neutrons. QUESTION 14 A student performs an experiment using two coins, a matchstick, a party balloon and a clear disposable plastic cup. First, he places the matchstick in balance on a coin positioned vertically, which balances on the second coin horizontally. QUESTION 15 There are processes that occur in the electronic structure of atoms in which an electron can gain or lose energy. In these processes, the electron passes from one energy level to another, and the energy difference between these two levels, in some of these processes, can be emitted as a photon of light. The photon has energy that can be determined by a direct relationship with the frequency of light through the equation E = h . f, where E is the energy of the photon, h is Planck's constant (h = 6.6 x 10-34 Js) and f is the frequency of the emitted light. QUESTION 16 In the 16th century, people believed that the Earth did not move. However, we now know that it does move, and a physical concept that supports and helps justify this idea is that of QUESTION 17 The bat is an animal that has an orientation system through the emission of sound waves. When this animal emits a sound and receives the echo 0.3 seconds later, how far away does the obstacle mean? (Consider the speed of sound in air to be 340 m/s). QUESTION 18 The intensity of the gravitational force on each of the planets in the Solar System is different. Comparing data from Earth with that of Saturn, we can see that the mass of our planet is approximately one hundred times smaller than that of Saturn, and the radius of Saturn is about nine times larger than that of Earth. If an object on the surface of Earth has a weight of P, when placed on the imaginary surface of Saturn, it will have a weight of approximately 1000 kg. QUESTION 19 Three identical boxes (1, 2, and 3) are placed on a horizontal shelf, each containing the same amount of materials, resulting in boxes with the same mass. However, the contents are not distributed uniformly inside, which causes their centers of mass (a, b, c) to be located in different places in each box, as illustrated in situation (I). QUESTION 20 A person goes to a science museum and in a room with lighting effects stands in front of different types of mirrors (concave, convex and flat). Which situation below represents the correct image (i) that this person can obtain of himself?