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. 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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2. A Null vector is a vector whose magnitude is __________.
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3. When an object is in thermal equilibrium, it is losing and gaining heat at ____ rates.
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4. 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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5. The ____ of the instantaneous centre of a moving rigid body is called centroid.
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6. Applied force is proportional to extension produced is a statement of ____ law.
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7. 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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8. Which of the following substances has the highest viscosity at room temperature?
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9. 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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10. On what thermometric property does the working of a thermistor depend?
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11. The _______ occurs when the driving frequency is the same as the natural frequency of the oscillator.
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12. The statement "the specific latent heat of fusion of ice is $3.3times 10^{5}$J/kg" means ______
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13. 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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14. 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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15. 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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16. The physical pendulum is any real pendulum in which all the mass is taken to be concentrated at a_____.
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17. 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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18. One of these is NOT a basic assumption of kinetic theory of ideal gases
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19. Which of the following statements is not correct about reference frames?
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20. 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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21. 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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22. The _________ is an aggregate of point masses such as that the relative separation between any two points remains invariant
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23. The molecules of a liquid are held together by what type of forces?
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24. 3-vectors are only properly represented in a 3-dimensional _____.
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25. Thermal expansion of a solid material depends on the following EXCEPT __________
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26. The general motion of a rigid body is a combination of ________and rotation.
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27. 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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28. What are the dimensions of power (time rate of change of expending energy)
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29. 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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30. 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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31. The coefficient of limiting static friction is the ratio of the ____ to the normal force.
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32. Gases occupy volume of the __________.
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33. _______ is that which enables a body to perform work.
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34. The motion of a ball rolling down a ramp is one with ________
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35. 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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36. The absolute zero temperature refers to the temperature at which _____
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37. 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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38. One of these is an example of thermal radiation detector
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39. Which of the following physical concepts best explains why passengers in fast moving cars should always fasten their seat-belts?
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40. A wall or partition that allows free exchange of heat energy between two systems is referred to as --------------
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41. The amount of heat stored in a substance depends on all of the following EXCEPT _______
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42. Which of the following is NOT an effect of heat on a substance?
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43. What is the unit of impulse?
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44. 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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45. 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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46. 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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47. In which of the following phenomena is surface tension important?
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48. Instantaneous velocity is the velocity of a particle at some _____of its path.
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49. A _______ consists of two equal and opposite parallel forces.
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50. Tin melts at 232 under standard atmospheric pressure. Express this temperature in kelvin
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