Exam 2: Describing Motion: Kinematics in One Dimension

What is the frequency does a stationary observer hear when a train approaches her with a speed of 30 m/s. The frequency of the train horn is 0.600 kHz and the speed of sound is 340 m/s.

The lowest tone to resonate in pipe of length L that is open at both ends is 200 Hz. Which one of the following frequencies will not resonate in the same pipe?

When 5.00 A is flowing through an 10.0-Ω device, how much power is being dissipated in the device?

The graph in the figure shows the velocity of a particle as it travels along the x-axis. What is the magnitude of the average acceleration of the particle between t = 1.0 s and t = 4.0 s?

Consider a brick that is totally immersed in water, with the long edge of the brick vertical. The pressure on the brick is

A pendulum of length L is suspended from the ceiling of an elevator. When the elevator is at rest the period of the pendulum is T. How does the period of the pendulum change when the elevator Moves upward with constant velocity?

An object is attached to a vertical spring and bobs up and down between points A and B. Where is the object located when its kinetic energy is a minimum?

According to Faraday's law, a coil in a strong magnetic field must have a greater induced emf in it than a coil in a weak magnetic field.

An object attached to an ideal spring executes simple harmonic motion. If you want to double its total energy, you could

What is the rms current through a 0.0010-µF capacitor at 1000 Hz and 5.0 V?

Abby throws a ball straight up and times it. She sees that the ball goes by the top of a flagpole after 0.50 s and reaches the level of the top of the pole after a total elapsed time of 4.1 s. What was the Speed of the ball at launch? Neglect air resistance.

A circular coil lies flat on a horizontal surface. A bar magnet is held fixed above the center of the coil with its north pole pointing downward. What is the direction of the induced current in the coil, As viewed from above?

The current definition of the standard meter of length is based on

The graph in the figure represents the velocity of a particle as it travels along the x-axis. What is the average acceleration of the particle between t = 2.0 s and t = 4.0 s?

If a car accelerates at a uniform how long will it take to reach a speed of 80 km/hr, starting from rest?

An airplane starts from rest and accelerates at a constant 10 What is its speed at the end of a 400 m-long runway?

Acceleration is sometimes expressed in multiples of where is the acceleration of an object due to the earth's gravity. In a car crash, the car's forward velocity may go from 29 m/s to 0 m/s in 0.15 s. How many g 's are experienced, on average, by the driver?

A guitar string is set into vibration with a frequency of 512 Hz. How many oscillations does it undergo each minute?

A heat engine having the maximum possible efficiency has an efficiency of 25% when operating between two heat reservoirs. If the temperature of the cold reservoir is 300 K, what is the Temperature of the hot reservoir?

Two speakers are placed side by side and driven by the same frequency of 0.50 kHz. If the distance from a person to one speaker is 5.0 m and the person detects little or no sound, which of The following is a possible the distance from the person to the other speaker? The sound speed in The room is 340 m/s.