True or false? 75. The forces in an isolated system must be conservative 76. The total...
True or false?
75. The forces in an isolated system must be conservative
76. The total mechanical energy of a system is not affected by friction forces.
77. An external force can change the total energy of a system that is not isolated.
87. The center of mass of an isolated system moves at a constant velocity as long as constant force is applied,
Thank you!
Homework Answers
Add Answer to:
True or false?
75. The forces in an isolated system must be conservative
76. The total...
True and False: 4 Points Fach Any answerS NOT recorded on the Scantron answer page 1....
True and False: 4 Points Fach Any answerS NOT recorded on the Scantron answer page 1. If the vector sum of the external forces on a system is zero, the total momentum of the system is constant. T True F) False 2. In an elastic collision, the total momentum and kinetic energy are conserved. T) TrueF False According to the work-energy theorem for a rotational body, the work done to decrease the angular velocity of a rigid body is positive...
True or False The total momentum of a system is equal to the total mass of...
True or False The total momentum of a system is equal to the total mass of the system times the velocity of its center of mass. I think this is true from P=Σmivi=mtotalvcentermass.
subject of mechanical vibrations false true false true true (3) Mark a circle on false or...
subject of mechanical vibrations
false true false true true (3) Mark a circle on false or true for the correct answer: A) The acceleration of simple spring- mass system for free undamped vibration has 90° phase difference with the displacement B) The system which is composed of spring- damper-mass, vibrates by its natural frequency C) Simple energy method can be applied only for conservative system. D) Lagrange equation can be applied for any dynamical system. E) Time required to decay...
TRUE/FALSE (3 Points Each. Write the word "True" or "False", not the letter "T" or "F"....
TRUE/FALSE (3 Points Each. Write the word "True" or "False", not the letter "T" or "F". I will construct 10 True/False questions by pulling ideas directly from the set of conceptual questions that can be found at the end of each chapter. What follows are some possible example questions: (1) If you are jogging at a constant velocity then you are not doing any mechanical work. The kinetic energy of a system must be either positive or zero. However, the...
True/False Indicate whether the sentence or statement is true or false. 1. The inertia of mass...
True/False Indicate whether the sentence or statement is true or false. 1. The inertia of mass is directly proportional to its velocity. 2. When a constant force is applied to an object,acceleration remains the same. 3. Action and reaction forces have the same direction. 4. When the force acting on an object is doubled, the effect on the acceleration of the object will be tripled. 5. When the normal force is doubled, the coefficient of friction is quadrupled acceleration than...
True false Superposition of Forces (Problem 2) Three forces act on a particle that moves with...
True false
Superposition of Forces (Problem 2) Three forces act on a particle that moves with a constant velocity v 2m/si 7 m/s y. Two of the forces acting on this particle are F1 = 10 Nz + 10 Ny-1 Ni and F2 = 1 N z + 8 NV-1 Ni . what are the vector components and the magnitude of the third force? Components Magnitude - Submit Answer Tries 0/6
True-False (2 points each). Circle the correct answer. 1) D F An isolated system has a...
True-False (2 points each). Circle the correct answer. 1) D F An isolated system has a net external force of zero. 2)TF Momentum is conserved in an isolated system. 3) TT The definition of work is W = Fdcos(0) 4) T (F) The spring force is proportional to the displacement of the spring end. 5) O T Engines and generators can be 100% efficient. 6) DF The impulse is equal to the change in momentum. 7) DF In an isolated...
An elevator descends at a constant velocity. Which of the following is true? The total energy...
An elevator descends at a constant velocity. Which of the following is true? The total energy of the elevator is conserved because no net external force acts on the elevator. The total energy of the elevator is conserved because energy is always conserved. The total energy of the elevator is not conserved because a net external force acts on the elevator. The total energy of the elevator is not conserved because a non-conservative force does work on the elevator. The...
answer all the above the car has an acceleration directed in the instantaneous direction of the...
answer all the above
the car has an acceleration directed in the instantaneous direction of the velocity vector. A ball is whirled on the end of a string in a horizontal circle at constant speed. Suddenly string breaks. Immediately after the string breaks, the ball will have a horizontal velocity away from the center of the circle have a horizontal velocity that is tangential to the circle. have a horizontal velocity toward the center of the circle. have a horizontal...
please ansa all A car travels around a curve with constant speed. The correct statement from...
please ansa all
A car travels around a curve with constant speed. The correct statement from the following is the car has an acceleration directed inward toward the center of the curve. the velocity of the car is constant. the car has an acceleration direction outward from the center of the curve. the car has zero acceleration. the car has an acceleration directed in the instantaneous direction of the velocity vector. A ball is whirled on the end of a...
True and False: 4 Points Fach Any answerS NOT recorded on the Scantron answer page 1. If the vector sum of the external forces on a system is zero, the total momentum of the system is constant. T True F) False 2. In an elastic collision, the total momentum and kinetic energy are conserved. T) TrueF False According to the work-energy theorem for a rotational body, the work done to decrease the angular velocity of a rigid body is positive...
subject of mechanical vibrations
false true false true true (3) Mark a circle on false or true for the correct answer: A) The acceleration of simple spring- mass system for free undamped vibration has 90° phase difference with the displacement B) The system which is composed of spring- damper-mass, vibrates by its natural frequency C) Simple energy method can be applied only for conservative system. D) Lagrange equation can be applied for any dynamical system. E) Time required to decay...
TRUE/FALSE (3 Points Each. Write the word "True" or "False", not the letter "T" or "F". I will construct 10 True/False questions by pulling ideas directly from the set of conceptual questions that can be found at the end of each chapter. What follows are some possible example questions: (1) If you are jogging at a constant velocity then you are not doing any mechanical work. The kinetic energy of a system must be either positive or zero. However, the...
True/False Indicate whether the sentence or statement is true or false. 1. The inertia of mass is directly proportional to its velocity. 2. When a constant force is applied to an object,acceleration remains the same. 3. Action and reaction forces have the same direction. 4. When the force acting on an object is doubled, the effect on the acceleration of the object will be tripled. 5. When the normal force is doubled, the coefficient of friction is quadrupled acceleration than...
True false
Superposition of Forces (Problem 2) Three forces act on a particle that moves with a constant velocity v 2m/si 7 m/s y. Two of the forces acting on this particle are F1 = 10 Nz + 10 Ny-1 Ni and F2 = 1 N z + 8 NV-1 Ni . what are the vector components and the magnitude of the third force? Components Magnitude - Submit Answer Tries 0/6
True-False (2 points each). Circle the correct answer. 1) D F An isolated system has a net external force of zero. 2)TF Momentum is conserved in an isolated system. 3) TT The definition of work is W = Fdcos(0) 4) T (F) The spring force is proportional to the displacement of the spring end. 5) O T Engines and generators can be 100% efficient. 6) DF The impulse is equal to the change in momentum. 7) DF In an isolated...
answer all the above
the car has an acceleration directed in the instantaneous direction of the velocity vector. A ball is whirled on the end of a string in a horizontal circle at constant speed. Suddenly string breaks. Immediately after the string breaks, the ball will have a horizontal velocity away from the center of the circle have a horizontal velocity that is tangential to the circle. have a horizontal velocity toward the center of the circle. have a horizontal...
please ansa all
A car travels around a curve with constant speed. The correct statement from the following is the car has an acceleration directed inward toward the center of the curve. the velocity of the car is constant. the car has an acceleration direction outward from the center of the curve. the car has zero acceleration. the car has an acceleration directed in the instantaneous direction of the velocity vector. A ball is whirled on the end of a...
Most questions answered within 3 hours.
-
You follow the lab procedure and at the end of Part 4C, you used
an average...
asked 28 seconds from now -
Write 250-450 words, about the following: • Analyze how a
servant leader in your organization or...
asked 3 minutes ago -
3. American and Japanese workers can each produce 4 cars a
year. An American worker can...
asked 6 minutes ago -
On October 1, 20X1, a company purchased a piece of land by
agreeing to pay the...
asked 18 minutes ago -
Jamie is doing a survey at her school about whether the students
feel the cafeteria food...
asked 23 minutes ago -
What are the roles of 3' and 5' untranslated regions in
mRNAs?
asked 24 minutes ago -
A domestic television receives antenna delivers a sky noise
power of -105 dBm to a matched...
asked 23 minutes ago -
What do you think are the chemical reactions involved in the
breathalyzer tests administered to potentially...
asked 38 minutes ago -
A random sample of 120 observations produces a mean of
38.2 from a population with a...
asked 45 minutes ago -
The average area of land burned by forest fires every year in
Canada is 2.5 million...
asked 47 minutes ago -
36. The basic difference between government bureaus and market
firms is that bureaus:
a. can...
asked 47 minutes ago -
java
- A recursive method findR() to search for a number in list
(ArrayList)
- A...
asked 1 hour ago