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Please choose all that are correct. Select one or more: O a. To maintain the same...
The one I selected is incorrect. Please let me know why and thank you. Why should...
The one I selected is incorrect. Please let me know why and
thank you.
Why should the block move at constant velocity (due to the pull of the hanging weight) when finding kinetic friction (procedure 2). Constant velocity means zero acceleration, means Tension = Friction force Because we cannot measure acceleration. if velocity is not constant, the tension in the string wil become zero. Because acceleration will add another force pulling the block (in addition to the tension in the...
understanding newton's law 1. An object cannot remain at rest unless which of the following holds? a. The net force act...
understanding newton's law 1. An object cannot remain at rest unless which of the following holds? a. The net force acting on it is zero. b. The net force acting on it is constant and nonzero. c. There are no forces at all acting on it. d. There is only one force acting on it. which one is the answer? there can be more than one answer.... 2. If a block is moving to the left at a constant velocity,...
PART C: Multiple Choice (1 mark each: total 20 marks) An airplane travelling due west experiences...
PART C: Multiple Choice (1 mark each: total 20 marks) An airplane travelling due west experiences a uniform acceleration due to a wind directed south. Eventually, its velocity a. is directed south 1. b. may be directed south is directed south-west is directed west e. may be directed west r the A boat, while crossing a river, points directly north toward the opposite shore fo entire trip. The current is perpendicular to the direction the boat is pointing in. it...
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...
Indicate whether each item is true or false. If an item is false, please correct it...
Indicate whether each item is true or false. If an item is false, please correct it so that it is true. Speed is a scalar quantity. Work and energy are vector quantities. Objects that are not moving cannot have any work done to them. Pressure is uniform throughout a fluid, regardless of depth Density of a material changes as the temperature of the material changes. Solids are always more dense than liquids. Liquids are always more dense than gases Falling...
Question 2 According to Newton's Laws of Motion, if I throw a baseball in outer space...
Question 2 According to Newton's Laws of Motion, if I throw a baseball in outer space - far from any other object- how will that ball move over time? (For the sake of this problem, let's neglect my mass) After the force of my hand no longer acts on the ball: Question 2 options: the ball will move forward, but it will gradually slow down and come to a stop once the force of my hand no longer acts on...
i need all answers please 6 pts A particle is moving in the positive x-direction under...
i need all answers please
6 pts A particle is moving in the positive x-direction under the influence of the force associated with the potential energy function shown below. What can you conclude about the force on the particle and its speed as it is going through point a in the x-axis? U The force is zero and the speed is decreasing. the force is in the positive x-direction and the speed is increasing. The force is in the negative...
Bill pushes Jane. The reaction force to this is the ground pushes Jane in the same...
Bill pushes Jane. The reaction force to this is the ground pushes Jane in the same direction the earth pulls on Bill the ground pushes Bill backward Jane pushes Bill the other way Flag this Question Question 141 pts A horse exerts 500 N of force on a heavy wagon. The wagon pulls back on the horse with an equal force. The wagon still accelerates because the horse pulls on the wagon a brief time before the wagon reacts these...
2) Rita is in an elevator that is moving at a constant velocity downward. If the...
2) Rita is in an elevator that is moving at a constant velocity downward. If the elevator now experiences an acceleration so that it speeds up, the normal force Rita experiences A) becomes greater than her weight. B) remains equal to her weight. C) becomes less than her weight, but not equal to zero. D) becomes zero. E) cannot be determined without more information. 11) A rope connects object A (mass 4m) with object B (mass m). (Object A is...
this is one question with many parts, thanks for the help! A Imagine a negatively charged...
this is one question with many parts, thanks for the
help!
A Imagine a negatively charged particle, A approaching another negatively charged particle, B, along the path shown in the diagram. A moves from point X to point Y. These two particles form an isolated system, which means no work is done by external forces; therefore, the system's total energy does not change. A foelsan clectrical force (an repelling force) from B while it approaches B. Therefore, work is done...
The one I selected is incorrect. Please let me know why and
thank you.
Why should the block move at constant velocity (due to the pull of the hanging weight) when finding kinetic friction (procedure 2). Constant velocity means zero acceleration, means Tension = Friction force Because we cannot measure acceleration. if velocity is not constant, the tension in the string wil become zero. Because acceleration will add another force pulling the block (in addition to the tension in the...
PART C: Multiple Choice (1 mark each: total 20 marks) An airplane travelling due west experiences a uniform acceleration due to a wind directed south. Eventually, its velocity a. is directed south 1. b. may be directed south is directed south-west is directed west e. may be directed west r the A boat, while crossing a river, points directly north toward the opposite shore fo entire trip. The current is perpendicular to the direction the boat is pointing in. it...
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...
i need all answers please
6 pts A particle is moving in the positive x-direction under the influence of the force associated with the potential energy function shown below. What can you conclude about the force on the particle and its speed as it is going through point a in the x-axis? U The force is zero and the speed is decreasing. the force is in the positive x-direction and the speed is increasing. The force is in the negative...
2) Rita is in an elevator that is moving at a constant velocity downward. If the elevator now experiences an acceleration so that it speeds up, the normal force Rita experiences A) becomes greater than her weight. B) remains equal to her weight. C) becomes less than her weight, but not equal to zero. D) becomes zero. E) cannot be determined without more information. 11) A rope connects object A (mass 4m) with object B (mass m). (Object A is...
this is one question with many parts, thanks for the
help!
A Imagine a negatively charged particle, A approaching another negatively charged particle, B, along the path shown in the diagram. A moves from point X to point Y. These two particles form an isolated system, which means no work is done by external forces; therefore, the system's total energy does not change. A foelsan clectrical force (an repelling force) from B while it approaches B. Therefore, work is done...
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