NAVAL COLLEGE 2021 ALL QUESTIONS PHYSICS
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Hello, warriors of YouTube. In this video, I solve the 2021 Naval College test in Physics. I hope you like it. Big hug! LINK TO MY PHYSICS PLATFORM: ➡️ https://linktr.ee/Prof.Davi Link to the Estratégia Militares website: https://www.estrategiamilitares.com.br/ My coupon: DAVI2.0 Link to download the Green test: https://www.marinha.mil.br/sspm/sites... Question 39 Every driver should always be careful to respect the speed limit on the road, a recommendation that is even more intense on rainy days when the coefficient of friction between the tires and the road decreases due to the water on the road. When making a curve, a vehicle traveling at high speed may lose grip on the road and end up going off at a tangent. Unfortunately, many accidents of this nature occur on the roads, many of them with fatalities. Consider then a car with mass m = 0.15 x 104 kg that makes a circular curve contained in a horizontal plane with radius R = 125 m. Consider that the value of the acceleration of gravity... Question 40 A fisherman, on top of a small boat, carefully observes a fish and estimates that it is 50 cm deep below the surface of calm waters of the lake where he fishes. What the fisherman did not know is that, due to the phenomenon of light refraction, in this case, when passing from a more refractive medium... Question 41 On a sunny day, at the seaside, a bather introduces a 50 g ice cube, at 0°C, into a thermos bottle, containing 250 g of water at 25°C, and closes it. Ignore the heat exchanges with the bottle. Calculate the equilibrium temperature... Question 42 A child observes a Styrofoam board measuring 10 cm x 40 cm x 85 cm, floating on the surface of the sea, and decides to go into the water to play on the board... Question 43 In an electrical installation, a circuit consists of 8 identical lamps connected in parallel to a 120 V source. It is known that the power of each lamp is 20 W... Question 44 On a straight road, a car is stopped at a red light. When the light turns green, the driver steps on the accelerator and the car starts off with a constant acceleration of 0.4 m/s2...
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