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. A rope suspended from a ceiling supports an object of weight W at its opposite end. Another rope tied to the first at the middle is pulled horizontally with a force of 30N. The junction P of the ropes is in equilibrium. Calculate the weight W and the tension T in the upper part of the first rope
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2. Which of the following contributes to the instability of an object?
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3. The frictional force in fluids is known as ___________
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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. The amount of heat stored in a substance depends on all of the following EXCEPT _______
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6. The statement "the specific latent heat of fusion of ice is $3.3times 10^{5}$J/kg" means ______
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7. Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin
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8. The velocity of a particle moving with simple harmonic motion is ____ at the mean position.
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9. The coefficient of limiting static friction is the ratio of the ____ to the normal force.
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10. Which of the following is NOT an effect of heat on a substance?
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11. If a force of 40N acting in the direction due East and a force of 30N is acting in the direction due North. Then the magnitude of the resultant forces will be ___________.
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12. 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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13. According to the kinetic-molecular theory, particles of matter are in motion in both gas and _____.
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14. The physical pendulum is any real pendulum in which all the mass is taken to be concentrated at a_____.
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15. 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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16. On what thermometric property does the working of a thermistor depend?
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17. One of these is NOT a basic assumption of kinetic theory of ideal gases
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18. The heat required to raise the temperature of the body through 1K is called _______.
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19. The specific latent heat of vapourization of a liquid is the quantity of heat in joules required to change 1kg mass of the liquid at its _______to gas at the same temperature.
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20. A man leaves the garrage in his house and drives to a neighbouring town which is twenty kilometres away from his house on sight-seeing. He returns home to his garrage two hours after. What is his average velocity from home in km/h?
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21. Instantaneous velocity is the velocity of a particle at some _____of its path.
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22. Applied force is proportional to extension produced is a statement of ____ law.
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23. 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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24. 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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25. 3-vectors are only properly represented in a 3-dimensional _____.
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26. When an object is in thermal equilibrium, it is losing and gaining heat at ____ rates.
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27. 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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28. An object is thrown upward from the edge of a tall building with a velocity of 10 m/s. Where will the object be 3 s after it is thrown? Take $g = 10ms^{-2}$
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29. 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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30. _______ is that which enables a body to perform work.
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31. 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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32. A perfectly ____ body is defined as one which emits every wavelength with the maximum energy for each wavelength for the particular temperature of the body.
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33. The resultant of vectors $vec{A}$ and $vec{B}$ has a magnitude of 20 units.$vec{A}$ has a magnitude of 8 units, and the angle between $vec{A}$ and $vec{B}$ is $40^{o}$. Calculate the magnitude of $vec{B}$
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34. What is common to the variation in the range and the height of a projectile?
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35. What are the dimensions of power (time rate of change of expending energy)
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36. The method of mixtures as a means of measuring the amount of heat of a substance depends of the principle of conservation of ______
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37. 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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38. The main condition for the rigid body is that the distance between various particles of the body does not ____.
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39. Which of the following statements is not correct about reference frames?
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40. 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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41. Which of the following is NOT a thermometric property?
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42. The mechanism of heat transfer from one point to another through vibration of the molecules of the medium is called -------------
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43. The _________ is an aggregate of point masses such as that the relative separation between any two points remains invariant
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44. The molecules of a liquid are held together by what type of forces?
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45. The absolute zero temperature refers to the temperature at which _____
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46. In which of the following phenomena is surface tension important?
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47. Which of the following does NOT refer to the terms description of stability of on an object?
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48. A Null vector is a vector whose magnitude is __________.
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49. One of these is an example of thermal radiation detector
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50. 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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