KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500...

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Kinematics Rotation Energy Waves Electricity 100 200 300 400 500 100 100 100 100 100 200 300 400 500 200 300 400 500 200 300 400 500 500 200 300 400 200 300 400 500 Dynamics & Equilibrium

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Page 1: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Kinematics Rotation Energy Waves Electricity

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Dynamics &Equilibrium

Page 2: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Answer: speed

What other term could be used for the magnitude of the velocity of an object?

Page 3: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What is the slope of a displacement versus time graph equal to?

Answer: velocity

Page 4: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

In a projectile problem, what must you do with the initial velocity?

Answer: determine its horizontal and vertical components (vectors)

Page 5: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What is determined by taking the area under the curve for a velocity versus time graph?

Answer: displacement

Page 6: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What would be the shape of a displacement versus time graph for an accelerating object?

Answer: parabola

y = kx2

Page 7: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Answer: a net force

Acceleration is caused by

Page 8: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Answer: it is 4X bigger

What happens to the force of attraction between two masses if the distance between them is halved?

Page 9: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Answer: 49N (equals weight)

What is the normal force on a 5.0 kg object sitting on a flat surface?

Page 10: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Answer: normal force and coefficient of friction

What two things determine the frictional force on an object?

Page 11: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Answer: the sum of all the forces on the object is zero, the net force is zero

What must be true for an object to be in static or translational equilibrium?

Page 12: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What term is used for a force that causes an object to want to rotate?Answer: torque

Page 13: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

In which direction is the net force on an object moving in a circle?

Answer: towards the center.

Page 14: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What must be true for an object to be in rotational equilibrium?

Answer: the sum of the clockwise torques have to equal the sum of the counterclockwise torques

Page 15: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What is the centripetal force of a 1 kg object moving 2 m/s in a circle with a diameter of 2 m?

Answer: 4 N

Page 16: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What is the formula for the rotational inertia of an object revolving around a point?

Answer: mr2

Page 17: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What equation describes the conversion of matter into energy?

Answer: E = mc2

Page 18: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Answer: potential

A compressed spring is an example of what type of energy?

Page 19: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What three things does gravitational potential energy depend on?

Answer: mass, g, height

Page 20: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What is the kinetic energy of a photoelectron dependent on?

Answer: the frequency of the incident light

Page 21: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.
Page 22: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Five boxes, each weighing 20 N, are lifted from the floor to a shelf 1.2 m off the ground. How many watts of power are produced if it takes one minute?

Answer: 2 W

Page 23: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What is the numerical value for the speed of radio waves traveling through space?

Answer: 3.00 x 108 m/s

Page 24: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

In a given medium, what happens to the wavelength of a sound wave if its frequency doubles?

Answer: it is halved

Page 25: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What is the term used to describe a piano string that is caused to vibrate due to a singer’s voice?

Answer: resonance

Page 26: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

A sound wave resonates in a closed tube that is 20 cm long. What is the wavelength of the sound?

Answer: 80 cm ( = 4L)

Page 27: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What is the speed of light in diamond?

Answer: 1.24 x 108 m/s

Page 28: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What is the total resistance of two 10 ohm resistors connected in parallel?

Answer: 5 ohms

Page 29: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

A 10 ohm and 20 ohm resistor are connected in series to a battery. What quantity is the same in both resistors?

Answer: the current

Page 30: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Answer: their quantities of charge and the distance between them

What is the force between two charged particles dependent on?

Page 31: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

Answer: to prevent excessive current in a circuit

What is the purpose of a circuit breaker?

Page 32: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

What is the the total current in a circuit with three 10 ohm resistors connected in series to a 12 V battery?

Answer: 0.4 A

Page 33: KinematicsRotationEnergyWaves Electricity 100 200 300 400 500 100 200 300 400 500 200 300 400 500 200 300 400 500 200 300 400 200 300 400 500 Dynamics.

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Answer:


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