2. Simplify the following using rules and laws. Write the law or rule used at each step. a) AB+(A'+B')C + AB b) (B+BC)(B+B°C)B+D)
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A: Mass Initial temperature Energy Final temperature Specific heat of copper
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- 7.A car at rest accelerates at 6 m/s2. How far (in meter) does it travel in the first 3 seconds? 8.A car engine with engine efficiency 40% burns gasoline and does 500 Joule work to drive the car. How much heat (in Joule) is produced from gasoline burning (hot source)? 9.The specific heat of water is 1.0 cal/gram oC. 100 gram hot water at 100 oC is mixed with 300 gram cold water at 20 oC. What is the final equilibrium temperature (in oC) of the mixed water? complete questions answrs pleaseQ2.2 A copper piece has a mass of 50.0 g and is initially at a temperature of 20.0 °C. If it is supplied with 300 J of heat, what will be its final temperature? [specific heat of copper c = 386 J/kg. °C]3. You are standing in a (cold) room and the temperature at a point in the room is given by the equation T(x, y) = 0.005x² + 0.01y², where r and y are measured in inches from a central point in the room and T is measured in degrees Fahrenheit. You are standing at a point with coordinates (60, 40). The positive r-axis points due east and the positive y-axis points due north. (a) If you walk due west, will the temperature increase or decrease? (b) In which direction is the temperature change greatest? (c) What is the rate of temperature change in that direction?
- O00 13. Which of the following is NOT the SI unit of pressure? C. Newton 0 014. Which temperature below causes resting of fluid particles? C. 273 K A. N/ m2 B. Torr D. Pascal B. 100 °C D. -273 K OO 15. What happens to the volume of gas? If, the temperature remains constant but the pressure is decreased. A. decreases B. doubled C. increases D. remains the same O O O16. What happens to the temperature of gas? If, the gas volume decreases and the pressure remains the same. A. decreases B. doubled C. increases D. remains the same O O O O17. Which of the following statements is not a part of kinetic molecular theory? A. Matter is composed of particles that are in constant motion. B. Particle velocity increases as the temperature increases. C. Particles in a system cannot transfer energy to each other. D. Particle interactions involve electrostatic attractions and repulsions. 200 O O O O18. In which of the following groupings of terms are the three terms closely related? A. kinetic energy,…24) It is necessary to determine the specific heat of an unknown object. The mass of the object is 201.0 g. It is determined experimentally that it takes 15.0 J to raise the temperature 10.0° C. What is the specific heat of the object? A) 3,020,000 J/kg.K C) 1500 J/kg.K B) 0.00130 J/kg K D) 7.46 J/kg.KQ2. Calculate the rate of heat conduction out of the human body, assuming that the core internal temperature is 37.0C , the skin temperature is 34.0C , the thickness of the tissues is about 2cm, and the surface area is 2 m^2. How much heat is lost in one hour?[thermal conductivity of human skin = 0.2 J/(s m C) ]
- help3. If the temperature of an ideal gas is raised from 30 °C to 210 °C, how many times faster is the new average (ms) speed of the gas molecules? times1 حی 57°F Sunny Exam in Progress W S + A light ray goes through two thick rectangular slabs of glass, each of the same uniform thickness. The first slab has index of refraction n, and the second n₂. If n₁5 please need help, keep in mind the 7 basic units and watch the sig figs thank you so much.5. You set an oven to 350 degrees F (180 C). You put uncooked cookies into the oven oma metal ban. Why do the cookies heat up? Does the oven temperature change as the cookies heat up? What happens if you unplug the oven (after it is already set at 350 degrees)?2. A bowl of water has a temperature of 50°C. It is put into a refrigerator where the temperature is 5°C. After 0.5 hours, the water is stirred and its temperature is measured to be 20°C. It is then left to cool further, take t in Newton's law of cooling to be measured in minutes. Use Newton's law of cooling to predict when the temperature will be 50°C.SEE MORE QUESTIONS