11-13Homework Answers
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11-13
The z-component of a vector can be (+), (-), or zero A True B false...
i) _________ True or False. A force with a strength of 50 Newtons acts on two...
i) _________ True or False. A force with a strength of 50 Newtons acts on two different objects: a car and a truck. Because the force on the truck is the same as the force on the car, both vehicles will experience the same acceleration. Explain your reasoning. ii) Give an example of rotational motion. iii) When the net torque on an object is zero, the object will a) continue to spin in the same direction (clockwise or counterclockwise) b)...
en an object undergoes non-uniform circular motion, its acceleration vector can be broken into a radial...
en an object undergoes non-uniform circular motion, its acceleration vector can be broken into a radial component and a tangential component. O True O False 10 For non-uniform circular motion, the radial component of the object's acceleration represents the lengthening or shortening of the object's velocity vector. True False 11.1 1 m circular motion, the tangential component of th For non-unifor e object's acceleration represents the change in the direction of the object's velocity vector. True O False
18 19 When objects stick together after colliding. A momentum is not conserved. B momentum is...
18 19 When objects stick together after colliding. A momentum is not conserved. B momentum is zero. the collision is inelastic. D. the collision is elastic. Work is done A any time a force is applied. B by all components of force. c. when an object moves in the direction of the net force. D by an applied force perpendicular to the direction of the motion A heavy truck has more momentum than a passenger car moving at the same...
What component of an acceleration vector is responsible for causing an object to speed up or...
What component of an acceleration vector is responsible for causing an object to speed up or slow down? A. The component of that is parallel to the velocity vector. B. The component of that is non-zero. C. The component of that is perpendicular to the velocity vector. D. The component of that is horizontal. E. The component of that is vertical. F. The component of that is parallel to the direction. G. The component of that is parallel to the...
8) A car is pushing a large truck, such that both accelerate. Which is true? A)...
8) A car is pushing a large truck, such that both accelerate. Which is true? A) The contact force the car exerts on the truck is larger than the contact force the truck exerts on the car. B) The contact force the truck exerts on the car is larger than the contact force the car exerts on the truck. C) The non-zero contact force of the truck on the car is equal to the contact force of the car on...
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...
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...
1) An object is in static equilibrium. Which statement(s) about this object must always be true?...
1) An object is in static equilibrium. Which statement(s) about this object must always be true? A) The net force on the object is zero. B) The acceleration of the object is zero. C) No forces are acting on the object. D) Both A and B E) All of these 2) A large fast-moving truck collides with a small stationary car. During the collision A) the car and the truck have the same magnitude of acceleration. B) the magnitude of...
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...
Question 5. Consider the following four obiects: a hoop, a flat disk,a solid sphere, and a...
Question 5. Consider the following four obiects: a hoop, a flat disk,a solid sphere, and a hollow sphere. Each of the objects has mass M and radius R. The axis of rotation passes through the center of each object, and is perpendicular to the plane of the hoop and the plane of the flat disk. Which of these objects requires the largest torque to give it the same angular acceleration? A) the hoop D) the flat disk B) the hollow...
en an object undergoes non-uniform circular motion, its acceleration vector can be broken into a radial component and a tangential component. O True O False 10 For non-uniform circular motion, the radial component of the object's acceleration represents the lengthening or shortening of the object's velocity vector. True False 11.1 1 m circular motion, the tangential component of th For non-unifor e object's acceleration represents the change in the direction of the object's velocity vector. True O False
18 19 When objects stick together after colliding. A momentum is not conserved. B momentum is zero. the collision is inelastic. D. the collision is elastic. Work is done A any time a force is applied. B by all components of force. c. when an object moves in the direction of the net force. D by an applied force perpendicular to the direction of the motion A heavy truck has more momentum than a passenger car moving at the same...
8) A car is pushing a large truck, such that both accelerate. Which is true? A) The contact force the car exerts on the truck is larger than the contact force the truck exerts on the car. B) The contact force the truck exerts on the car is larger than the contact force the car exerts on the truck. C) The non-zero contact force of the truck on the car is equal to the contact force of the car on...
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...
1) An object is in static equilibrium. Which statement(s) about this object must always be true? A) The net force on the object is zero. B) The acceleration of the object is zero. C) No forces are acting on the object. D) Both A and B E) All of these 2) A large fast-moving truck collides with a small stationary car. During the collision A) the car and the truck have the same magnitude of acceleration. B) the magnitude of...
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...
Question 5. Consider the following four obiects: a hoop, a flat disk,a solid sphere, and a hollow sphere. Each of the objects has mass M and radius R. The axis of rotation passes through the center of each object, and is perpendicular to the plane of the hoop and the plane of the flat disk. Which of these objects requires the largest torque to give it the same angular acceleration? A) the hoop D) the flat disk B) the hollow...
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