SY 2018/2019 1 st Final Term Revision Student s Name: Grade: 10A/B Subject: Physics Teachers Signature
Question 1 : Choose the correct answer : 1 ) What is the density of Mercury. a ) 13.6x10 3 b) 14.6x10 8 c)18.8 x10 8 d) 20.21 x10 8 2 )if 2.8kg rectangular air mattress is 2.00m long 0.500 m wide, and 0.100m thick. What mass can it support in water before sinking? a )85 kg b)97kg c)100kg d)50kg 3)Which of the following object will float in a tub of mercury? a) Solid Gold bead b) Ice Cube c)solid Siler Bead d) Crown 4)The unit of pressure is. a) Newton b) Pascal c)constant d)non-turbulent
5) The ideal fluid is also called a) Laminar fluid b)turbulent fluid c)constant Non-turbulent\ 6)The pressure in a fluid decreases as the fluid s velocity increases. a)pascal law b) Bernoulli s principal c) Convection d)convection 7)What is the fluid pressure as a function of depth. a) p= p n +pgh b) p= pp n -pgh c) p= p uu / pgh d) p= p np * pgh 8)Energy is transferred by terminal conduction through collison a) particles b) atom c) energy d) object
9) The most common temperature scales are : a ) Energy, Celsius, Fahrenheit b) Heat, Celsius, Fahrenheit c) Fahrenheit, Kelvin, Celsius d) Fahrenheit, heat, kelvin 10) Which of the following exerts the most pressure while resting on a floor? a) a 25 N cube with 1.2 m sides b) a 15N cylinder with a base radius of 1.0 m c) a 25N cylinder with 2.0 m sides d) a 25 N cylinder with a base radius 1.0 m Fill in the blanks : 1 ) Density is a measure of a quality in a given. 2) is the upward force exerted by a liquid on an object immersed in or floating on the liquid. 3) The density of the Air is. 4)The density of Gold is. 5) The object density is greater than the fluid density, the net force is.
6)The SI unit of pressure is. 7) The pressure in a fluid as the fluid s velocity. 8) A 1 V 1 and A 2 V 2 is a formula of equation. 9)The product A V, which has units of volume per unit time is called the. 10)Density is represented by. 11) A gas contains only on type of atom. 12) The symbol U stands for. 13) Solids typically have the smallest coefficient of expansion values. 14) is the ice point of Fahrenheit. 15) is an experimental procedure used to measure the energy transferred from one sub to another as heat. 16) The heat capacity of water is.
17)Substances that rapidly transfer energy as a heat are called. 18) The other principal energy transfer mechanism is. 19)The melting point of water is. 20) is just one way of increasing a substance internal energy. True and False 1) Density of hydrogen is 0.8999. 2) The weight if an object immersed in a fluid is not the object apparent weight. 3) Liquid have a definite volume, but gas do not have. 4) Gases are compressible and can have densities over a wide range of values. 5) The SI unit of mass density is N 6) Displaced volume of water means the actual volume of water. 7) F b stands for magnitude of buoyant force. 8) When object s density is less than fluids density, the net force is positive. 9) When pressure of atmosphere at sea level is about 2.001 x10 5. 10 ) Blaise Pascal introduces the Pascal principle.
11 )When every particle that passes a particular point moves along the same smooth path traveled by the particles that passes that point is turbulent flow. 12 )Irregular Motion of fluid, called eddy currents. 13 )Viscosity does not refers to the amount of internal friction with in a fluid. 14 ) Ideal fluids are called characterized by a steady flow. 15 ) Energies associated with atomic motion called internal energy. 16 ) Temperature can be changed by transferring particle to or from a substance. 17 ) Unit of temperature is Kelvin. 18 ) Calorimeter is used to determine specific heat capacity. 19 ) C p = Q / m t is the formula of specific heat. 20 ) Conservation of energy is P.E + U = 0. 21 Question and Answers : Q1) Define latent heat? _ Q2) Define Phase Energy?
Q3)What is calorimeter? Q4)Draw a simple Calorimeter. Q5) Define specific heat capacity? Write the formula? Q6)Define the following terms? a) Convection b) Thermal conduction c) Electromagnetic radiation
Q7) Explain Conservation of energy? Q8) What is the Si unit of energy? Q9 ) Draw transfer of Particle s Kinetic Energy as Heat at 5 o and 11 o C :\
Q10 ) What is heat? Q11) What is meant by coefficient of volume expansion? Q12) Write the formula for Celsius, Fahrenheit Temperature Conversion and Celsius- kelvin temperature conversion? Q13 ) Define Thermal equilibrium heat and internal energy?
Q14 ) Write the continuity equation? Q15) Define laminar and turbulent flow? Q18 ) Write the formula for Buoyant force? Q19 )What is fluid? Q20 ) Define Mass density and write the SI unit?
Q 21: if a bottle of water shaken vigorously, will the internal energy of water change? why and why not? Numerical Problems : 1) 2.8 kg rectangular air mattress is 2.00 m long and 0.500 m wide, and 0.100m thick. What mass can it support in water before sinking? 2) A ferry boat is 4.0m wide and 6.0 m long. When a truck pulls onto it, the boat sinks 4.00 cm in the water. What is the weight of the truck?
3) A submerged submarine alters its buoyancy so that it initially accelerates upward at 0.325m/s 2. What is the submarine average density at this time? (Hint : the density of water rat sea level is 1.025 x 10 3 kg/m 3 ) 4)A 1.5 m wide by 2.5 m long water bed weighs 1025 N. Find the pressure that the water bed exerts on the floor. Assume that the entire lower surface of the bed makes contact with the floor. _
_ 5)A 2.0 cm diameter faucet tap fills a 2.5 x 10-2 m container in 40.0 s. What is the speed at which the water leaves the faucet?
6) A natural gas pipeline with a diameter pf 0.520 m delivers 1.55m 3 of gas per second, What is the flow speed of the gas? 7)What are the equivalent Celsius and Kelvin temperature of 50.0 o F?
8) Temperature of one northeastern state range from 105 0 F in the summer to -25 0 F in winter. Express tis temperature in degree Celsius. 9)The normal human body temperature is 98.6 0 F. A person with a fever may record 102 0 F. Express these temperature in degree Celsius.
10 ) A pan of water is heated from 23 o C to 78 o C. What is the range in it s temperature on the kelvin and Fahrenheit scales? 11 )Oxygen condenses into liquid at approximately 90.2 K. To what temperature does this correspond on both the Celsius and Fahrenheit temperature scales?
12 )A 3.0 x 10-3 kg copper penny drops a distance of 50.0m to the ground. If 65% of the initial potential energy goes into increasing the internal energy of the penny, determine the magnitude of that increase. 13 ) The amount of internal energy needed to raise the temperature of 0.25 kg of water by 0.2 0 C is 209.3 j. How fast must a 0.25 kg baseball travel in order for it s kinetic energy to equal this internal energy?
14 ) What Is the final temperature when 3.0 kg gold bar at 99 0 C dropped into 0.22 kg of water at 25 C. 15)Brass is an alloy made from copper and zinc. A 0.59 kg brass sample at 98.0 0 C is dropped into 2.80kg of water at 5.0 0 C. If the equilibrium temperature is 6.8 0 C, What is the specific heat capacity of brass? _