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You attach a speaker to an air track cart and then attach the cart to one end of the air track by means of a spring and start the system oscillating by stretching the spring 0.697 m from its equilibrium position and then releasing it. The force constant for the spring is k = 46.8 N/m, the total mass of the speaker and air track cart are 4.00 kg, and the speaker emits sound with a frequency of 345 Hz. If your lab partner Pat stands at the end of the air track, determine the highest and lowest frequencies she hears. The speed of sound in air is 343 m/s. (Enter your answers to at least the nearest Hz.)
Determine the angular momentum of a hollow spinning sphere when its angular speed is 20 rad/s. The rotational inertia of the sphere is 0.02 kg.m2
A soccer ball with mass 0.446 kg is initially moving with speed 1.40 m/s. Over what distance must the player's foot be in contact with the ball to increase the ball's speed to 6.40 m/s
a parachutist relies on air resistance mainly on her parachute to decrease her downward velocity. she and her parachute
A house painter is standing on a uniform, horizontal platform thatis held in equilibrium by two cables attached to supports on the roof. how large is the force exerted by the right-hand cable
A glass capillary tube with a diameter of 0.42 mm and length 11 cm is filled with a salt solution with a resistivity of 0.20 ohm•m. What is the resistance
A "110-watt" lightbulb uses an average power of 110 W when connected to an rms voltage of 120 V. What is the resistance of the lightbulb? What is the maximum current in the bulb? What is the maximum power used by the bulb at any given instant of t..
A rugby player passes the ball 9.75 m across the field, where it is caught at the same height as it left his hand. How long did this pass take
A 30 kg crate is pulled across a level floor with 80 N of force. The coefficient of kinetic friction between the crate and the floor is 0.15. Draw a free body diagram illustrating this situation and find the acceleration of the crate.
A simple pendulum consists of a small object of mass m (the "bob") suspended by a cord of length l of negligible mass. A force F is applied in the horizontal direction (so F is Fi), Determine the work done by the gravitational force on the bob
A harpsichord string of length 1.32 m and linear mass density 24.0 mg/m vibrates at a (fundamental) frequency of 457 Hz. What is the frequency of the sound wave in air produced by vibration of the string
A cylinder contains a mixture of helium and argon gas in equilibrium at a temperature of 208 C. What is the average kinetic energy of each type of molecule
Two converging lenses are separated by 23.00 cm. The focal length of each lens is 14.00 cm. An object is placed 39.00 cm to the left of the lens that is on the left. Decide the final image distance relative to the lens on the right.
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