ATTENTION:
Kindly note that you will be presented with 50 questions randomized from the NOUN question bank. Make sure to take the quiz multiple times so you can get familiar with the questions and answers, as new questions are randomized in each attempt.
Good luck!
PHY101
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1. The amount of heat stored in a substance depends on all of the following EXCEPT _______
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2. When trying to turn a key into a lock, ____ of forces are applied.
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3. Which of the following substances has the highest viscosity at room temperature?
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4. Calculate the root-mean-square velocity of oxygen molecules at room temperature, 25 oC. Given that molar mass of oxygen and molar gas constant are 31.9998 g/mol and 8.3143 J/mol K, respectively in meter per second.
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5. According to principle of moment, if a system of coplanar forces is in equilibrium, then the algebraic ____of their moments about any point in their plane is zero
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6. A 50kg boy suspends himself from a point on a rope tied horizontally between two vertical poles. The two segments of the rope are then inclined at angles 30 degrees and 60 degrees respectively to the horizontal.The tensions in the segments of the rope in newtons are ______
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7. 3-vectors are only properly represented in a 3-dimensional _____.
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8. Given three vectors $vec{a} = {-}vec{i}{-}4vec{j}+2vec{k}$, $vec{b} = 3vec{i}+2vec{j}-2vec{k}$, $vec{c} = 2vec{i}{-}3vec{j}+vec{k}$, calculate $vec{a}cdot(vec{b}timesvec{c})$
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9. Two forces act on a point object as follows: 100 N at $170^{o}$ and 100N at $50^{o}$. Find the resultant force
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10. A body hangs from a spring balance supported from the roof of an elavator. If the elavator has an upward acceleration of $3ms^{-2}$ and the balance reads 50 N, what is the true weight of the body?
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11. The absolute zero temperature refers to the temperature at which _____
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12. The heat required to raise the temperature of the body through 1K is called _______.
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13. A string of natural length L extends to a new length L' under tensile force F. If Hooke’S law applies, the work done in stretching the spring is ------------
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14. Which of the following physical concepts best explains why passengers in fast moving cars should always fasten their seat-belts?
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15. A piece of stone has mass 80kg and density of 0.10 kg per meter cube. What is its volume in meter cube?
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16. A cart is moving horizontally along a straight line with constant speed of 30 m/s. A projectile is fired from the moving cart in such a way that it will return to the cart after the cart has moved 80 m. At what speed (relative to the cart) and at what angle (to the horizontal) must the projectile be fired?
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17. Radius of _________ is the radial distance from any given axis at which the mass of a body is concentrated without changing the moment of inertia of the body about that axis.
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18. The molecules of a liquid are held together by what type of forces?
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19. Thermal expansion of a solid material depends on the following EXCEPT __________
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20. A boy intends to move an m-kg crate across the floor by applying a constant force P newtons on it.The coeficient of friction between the floor and the crate is $mu$. Which of these is the best option for his task?
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21. A stone thrown from ground level returns to the same level 4 s after. With what speed was the stone thrown? Take $g = 10ms^{-2}$
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22. The frictional force in fluids is known as ___________
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23. An electric kettle contains 1.5 kg of water at $$100 ^{o}$$ and powered by a 2.0 kW electric element. If the thermostat of the kettle fails to operate, approximately how long will it take for the kettle boil dry? (Take the specific latent heat of vaporization of water as $2000kJkg^{-1}) $
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24. Which of the following is NOT a thermometric property?
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25. An ungraduated mercury thermometer attached to a millimeter scale reads 22.8mm in ice and 242mm in steam at standard pressure. What will the millimeter read when the temperature is 20^{o} C?
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26. A passenger in a moving car and a passerby standing at the road side see each other as moving in the opposite direction. Which of the following is NOT true?
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27. How fast must a ball be rolled along the surface of a 70-cm high table so that when it rolls off the edge it will strike the floor at the same distance (70cm) from the point directly below the edge of the table?
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28. One of these is an example of thermal radiation detector
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29. The _________ is an aggregate of point masses such as that the relative separation between any two points remains invariant
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30. Forces are called coplanar when all of them acting on body lie in one _____.
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31. What are the dimensions of power (time rate of change of expending energy)
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32. The general motion of a rigid body is a combination of ________and rotation.
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33. One of these is NOT a basic assumption of kinetic theory of ideal gases
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34. A _______ consists of two equal and opposite parallel forces.
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35. Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin
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36. The physical pendulum is any real pendulum in which all the mass is taken to be concentrated at a_____.
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37. The motion of a ball rolling down a ramp is one with ________
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38. A ball is kicked and flies from point P to Q following a parabolic path in which the highest point reached is T. The acceleration of the ball is _______
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39. The speed of 90 hm/hr is equal to ------------------ m/s
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40. Which of these is correct about viscosity?
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41. The mechanism of heat transfer from one point to another through vibration of the molecules of the medium is called -------------
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42. Instantaneous velocity is the velocity of a particle at some _____of its path.
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43. _______ is that which enables a body to perform work.
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44. Applied force is proportional to extension produced is a statement of ____ law.
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45. When a gas is allowed to expand at constant _____the process is described as isothermal.
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46. The term that best describes the need to hold the butt of a riffle firmly against the shoulder when firing to minimise impact on the shoulder is ________
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47. On what thermometric property does the working of a thermistor depend?
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48. Which of the following statements is not correct about reference frames?
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49. A wire of cross-sectional area of $6times10{-5}m^{2}$ and length 50cm stretches by 0.2mm under a load of 3000N. Calculate the Young’s modulus for the wire
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50. Which of the following does NOT refer to the terms description of stability of on an object?
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