Welcome to your Quantities, Mass and Weight(Senior Class Physics Study by Topics) NAME EMAIL PHONE NUMBER 1. Which of the following parameters manifests itself as a vector quantity? visible-light intensity temperature velocity mass None 2. A tugboat is traveling from New Jersey to Arkansas across a river with a resultant velocity of 20knots. If the river flows at 12knots, the direction of motion of the boat relative to the direction of water flow is 36.87° 136.87° 53.13° 90° None 3. A bird flying due north with a velocity of 15m/s sheds a feather in an air current blowing at 20m/s due east. The feather will move with a velocity of 20m/s east 25m/s east of north 25m/s east of south 25m/s west of south 15m/s north None 4. We can express gravitational acceleration in kilograms per meter meters per second squared meters kilograms per pound None 5. What would happen if the earth suddenly stopped moving in its orbit around the sun, but nothing else changed? The earth would remain fixed at the spot Nobody knows The earth would fall into the sun The earth would fly out of solar orbit None 6. A vernier scale was formed by dividing a length of 19mm into 20 equal parts. If the vernier scale is used with a main scale marked in mm, what is the smallest distance that can be measured? 0.005mm 0.001mm 0.5mm 0.1mm 0.05mm None 7. Two points on a velocity time graph have co-ordinates (5s, 10m/s) and (20s, 20m/s). Calculate the mean acceleration between the two points. 1.50m/s² 0.67m/s² 0.83m/s² 2.00m/s² None 8. Which of the following is a set of vectors? acceleration, moment and velocity mass, weight and density force, mass and moment mass, volume and density None 9. Imagine that we have access to a machine that collects energy over a period of time, and then converts all the energy into matter. We employ that machine to collect sunlight for a few weeks, and then push a button marked "Make Matter!"How can we calculate the mass of the resulting material sample in kilograms? multiply the total collected energy in joules by the square of the speed of light in meters per second divide speed of light in meters per second by the total collected energy in joules we can't divide the total collected energy in joules by the square of the speed of light in meters per second divide the square of the speed of light in meters per second by the total collected energy in joules None 10. The pair of physical quantity that are scalar only are Impulse and time Length and displacement Volume and area Moment and momentum None 11. When we talk about steradians, we talk about volume Solid angular measure gravitational acceleration surface area None 12. A boat travels due east at a speed of 40m/s across a river flowing due south at 30m/s. What is the resultant speed of the boat? 1.3m/s 70m/s 50m/s 10m/s None 13. Which of the following nonstandard ''units'' could we theoretically use to express the frequency of a sound wave? the cycle per minute the hertz per minute the kilogram-meter per minute the joule per minute the British thermal unit per meter None 14. An example of scalar quantity is electric charge acceleration due to gravity momentum weight velocity None 15. The values of p, q, and r respectively in the expression M^{p}L^{q}T^{r} for the universal gravitational constant G are^{} -1, 2, -3 2, -3, -2 -1, 3, -2 -2, -1, 3 None 16. The dimensions of viscosity are I. ML^{-1}T^{-1} II. M^{2}L^{-1}T^{-1} III. M^{-1}L^{-1}T^{-1} IV. MLT^{-1} II IV I III None 17. The power source of a ticker-timer vibrates 40 times in one second. If the ticker-timer made 200 dots during an experiment, determine how long the experiment lasted. 5 seconds 45 seconds 15 seconds 25 seconds None 18. Which of the following nonstandard "units" could we theoretically use to express accumulated power consumption over time? gcm gcm²/s² the joule/hour the watt per minute gcm/s None 19. The inner diameter of a small test tube can be measured accurately using? Pair of dividers Pair of vernier calliper Meter rule A micrometer screw gauge None 20. The international agreed system of units (S.I) for physical measurements are? lb, ft, s cm, g, s g, m, s Kg, m, s Kg, cm, s None 21. Which of the following is a fundamental unit? Watt Ampere Newton Joule None 22. Which of the following sets consist entirely of a scalar quantity? Impulse, Mass & Magnetic flux Pressure, Work & Electric potential Displacement, Electric field & Energy Speed, Momentum & Distance None 23. A stream is flowing at 0.75m/s and a boat heading perpendicularly to the stream landed at the opposite bank at an angle 30°. Calculate the velocity of the boat? 1.00m/s 0.65m/s 0.86m/s 1.50m/s None 24. To determine the weight of an object, you could Use a spring balance None of the above Find the force necessary to give it a certain acceleration Use a beam balance Any of the above None 25. A vector of magnitude 5 units in the north direction is combined with another vector to give zero resultant. The other vector is 5 units in the east direction 5 units in the west direction 5 units in the south direction 5 units in the north direction None 1 out of 25 Time's upTime is Up!