Check out the picture, there are 4 questions you have to select one and write whole the essay about it. Also, I have to send you some file about the articles mentioned on the picture to pick up the information from Contact me at : toomy056@ hotmail . com
A3. This question is about testing an electrical circuit. The diagram below shows an electrical circuit consisting of four identical resistors RA, RB, RC, and RD. The resistance of each resistor is 10 k?. (a) Commercial resistors sometimes fail in one of two ways. They can go "open-circuit" in which the resistance of the resistor becomes infinite or they can go "short-circuit in which the resistance becomes zero. In order to test the circuit a technician connects a high resistance voltmeter between the terminals X and Y and applies a potential difference of 6 V across the resistor RA. (i) What voltage will the voltmeter read if all the resistors are functioning normally? (ii) What would the voltmeter read if either resistor RB or RD were to short-circuit? (iii) If the electrician were to note a reading on the voltmeter that suggested either RB or RD had short-circuited how could he test which one of these had in fact short-circuited using only the voltmeter? (b) Identify a possible fault with the circuit that would produce a reading of 6 V on the voltmeter when it is connected between X and Y.
A pellet gun is fired straight downward from the edge of a cliff that is 27.3 m above the ground. The pellet strikes the ground with a speed of 36.7 m/s. How far above the cliff edge would the pellet have gone had the gun been fired straight upward?
a storage tank of negligible mass and 30m high is filled with gasoline. please calculate the following: the gauge pressure and absolute pressure at the bottom of the tank. the force that acts on a square access hatch at the bottom of the tank that measures 0.5m x 0.5m. given that tha tank is shaped light a right circular cylinder with a height of 30m and with a base radius of 10m. the tank is attached to a steel cable of neglible mass and immersed in water. calculate the tension in the cable before and after it is immersed in water.
A cowboy fires a silver bullet of mass 5 g with a muzzle speed of 302 m/s into the pine wall of a saloon. What is the temperature change of the bullet? Assume that all the internal energy generated by the impact remains with the bullet. The specific heat of silver is 234 J/kg · ? C. Answer in units of ?C.
