General Physics for Engineering I Exam

False (B)

example answer

<p>dog</p> Signup and view all the answers

<p>Python = General-purpose programming JavaScript = Client-side scripting for web applications SQL = Database queries CSS = Styling web pages</p> Signup and view all the answers

<p>1.16 m (D)</p> Signup and view all the answers

<p>They both slide up to the same height. (D)</p> Signup and view all the answers

<p>Only A and B are true (E)</p> Signup and view all the answers

<p>0.308 kg-m/s downwards (A)</p> Signup and view all the answers

<p>the block at left lands first (B)</p> Signup and view all the answers

<p>$\sqrt{2}$/5$\omega$ (D)</p> Signup and view all the answers

<p>1.76 rad/s (B)</p> Signup and view all the answers

<p>(4i - 13j -11.5k) kg.m²/s (D)</p> Signup and view all the answers

<p>21.1 m/s in a direction 47.7° east of north (D)</p> Signup and view all the answers

<p>8.35 rad/s² (B)</p> Signup and view all the answers

<p>8.80° (E)</p> Signup and view all the answers

<p>-4.0 J (A)</p> Signup and view all the answers

<p>3.14 m/s² downward (A)</p> Signup and view all the answers

<p>29.6 m/s (A)</p> Signup and view all the answers

<p>equal in magnitude but point in opposite directions (B)</p> Signup and view all the answers

<p>0.33 m/s (E)</p> Signup and view all the answers

<p>1.41 m/s² (E)</p> Signup and view all the answers

<p>Option 2 (A), Option 3 (D)</p> Signup and view all the answers

<p>Option 2 (A), Option 3 (C)</p> Signup and view all the answers

The force of static friction must be equal to the component of gravity acting parallel to the incline to keep the block at rest.

The work done by gravity on a mass moved horizontally is zero because the force of gravity is perpendicular to the direction of motion.

Potential energy is the energy stored by an object by virtue of its position relative to a reference point. For conservative forces, like the force due to a spring, the potential energy at a point is the negative of the work done by the force to move an object from the reference point to that point.

Power is the rate at which energy is transferred or transformed. It is calculated as the work done divided by the time taken to do that work.

In a system with no external forces acting upon it, the total momentum remains constant. This means the total momentum before a collision equals the total momentum after the collision.

The kinetic energy lost in a collision is equal to the initial kinetic energy minus the final kinetic energy of the system.

When an object rolls without slipping, its kinetic energy is the sum of translational kinetic energy (due to the motion of the center of mass) and rotational kinetic energy (due to the rotation of the object).

The moment of inertia of a rotating object is a measure of its resistance to changes in its angular velocity. It depends on the mass distribution of the object.

Torque is the turning effect of a force about an axis of rotation. It is calculated as the cross product of the force vector and the position vector from the axis of rotation to the point where the force is applied.

Angular momentum is a measure of the amount of rotational motion an object possesses. It is calculated as the product of the moment of inertia and the angular velocity.

When a system experiences changes in only internal forces, its total angular momentum remains constant. This means that the angular momentum before an event is equal to the angular momentum after the event.

The change in kinetic energy of a system is equal to the work done on or by that system.

Kinetic energy is the energy possessed by an object by virtue of its motion. It is calculated as half the product of the object's mass and the square of its velocity.

The change in an object's potential energy is equal to the negative of the work done by the conservative force acting on that object.

When no external force acts on a system, its total mechanical energy (sum of kinetic and potential energy) remains constant. This means that the total energy before an event is equal to the total energy after the event.

The rate at which a force does work is known as power. It is determined by dividing the work done by the time it takes to complete the work.

The work done by a force is equal to the product of the force and the displacement of the object in the direction of the force.

The component of the applied force that's parallel to the direction of motion or displacement.

The change in the momentum of an object is equal to the impulse applied on it.

The tendency of an object to resist changes in its state of motion. It is a direct measure of the object's mass.

The force that opposes relative motion between surfaces in contact. It always acts in the direction opposite to the motion.

The force that two objects in contact exert on each other. These forces are equal in magnitude but opposite in direction.

The force that pulls objects towards the center of the Earth. It is a force of attraction that acts on objects with mass.

The acceleration of an object due to the force of gravity. It is a constant value near the surface of the Earth.

The study of motion of objects without considering the forces that cause the motion.

Describing the motion of an object with constant acceleration due to gravity.

The path traced by a point on a rotating object. The distance traveled in one complete rotation of the object is called the circumference of the circular path.

A change in velocity over time.

The rate of change of displacement. It describes how fast an object moves.

The change in the position of an object.