the quantity that causes displacement.the quantity that changes the velocity of an object.•Question 61 out of 1 points1 joule of work done in 1 second is calledSelected Answer:one wattAnswers:one wattone kelvinone candelaone ampere•Question 70 out of 1 pointsTime rate of change of displacement is known asSelected Answer:distanceAnswers:displacementdistancespeedvelocity•Question 80 out of 1 points
Brenda carries an 8.0-kg suitcase as she walks 25 m along a horizontalwalkway to her room at a constant speed of 1.5 m/s. How much work doesBrenda do in carrying her suitcase?Selected Answer:300JAnswers:0J200J300J33J•Question 95 out of 5 pointsA 2.0-kg object moves in a straight line on a horizontal frictionlesssurface.The graph shows the velocity of the object as a function of time. Thevarious equal time intervals are labeled using Roman numerals: I, II, III,IV, and V.The net force on the object always acts along the line of motion of theobject.In which section(s) of the graph is the net force changing?Selected Answer:I and IV.Answers:I and IIIII and IVI and IV.IV.•Question 105 out of 5 pointsA 2.0-kg object moves in a straight line on a horizontal frictionlesssurface.The graph shows the velocity of the object as a function of time.Thevarious equal time intervals are labeled using Roman numerals: I, II, III,IV, and V.The net force on the object always acts along the line of motion of theWhich section of the graph corresponds to the application ofthelargestconstantnet force?Selected Answer:III.Answers:I.II.III.IV.•Question 10 out of 5 points"In a certain clock, a pendulum of length L1 has a period T1 = 0.95 s. Thelength of the pendulum is adjusted to a new value L2 such that T2 = 1.0 s.What is the ratio L2/L1? "Selected Answer:0.95Answers:0.90.9511.1•Question 20 out of 5 pointsDetermine the quantity of heat added to 3.5 moles of the ideal gas argon ifthe temperature increases from 75 °C to 225 °C during an isobaric process.Note: The molar specific heats of argon are CV = 3.0 cal/K?mol and CP =5.0 cal/K?mol.Selected Answer:750 calAnswers:2600 cal2100 cal1600 cal750 cal•Question 30 out of 2 points"Force applied by a lady is 2 N and moment of force is 16 Nm, distance ofpivot from effort would be"
Selected Answer:32 NAnswers:32 N8 N14 N18 N•Question 40 out of 2 points"Complete the following statement: When a net torque is applied to a rigidobject, it always produces a"Selected Answer:constant acceleration.Answers:constant acceleration.constant angular velocity.constant angular momentum.change in angular velocity.•Question 50 out of 1 points"During one stage of a reversible process, the temperature of an ideal gasremains constant as its volume is decreased. Which one of the followingstatements concerning this situation is true?"Selected Answer:The pressure of the gas decreases in this process.
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