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A microphone is moving in air towards a stationary source of sound. The detected frequency is 106 Hz greater than the emitted frequency. When the microphone moves at the same speed toward the same stationary source in an unkown liquid, the detected frequency is only 41.0 Hz greater than the emitted frequency. What is the speed of sound in the unkown liquid?
A two-slit pattern is viewed on a screen 1.08 m from the slits. what is the total width of the central bright fringe
How much work is done by an applied force that moves two charges of +6.8 µC that are initially very far apart to a distance of 5.3 cm apart?
Pool players often pride themselves on their ability to impart a large speed on a pool ball. they have placed you in charge of determining the speed of the players\' break shots
In a local bar, a customer slides an empty beer mug down the counter for a refill, With what velocity did the mug leave the counter
A 2 kg ball has been thrown vertically upward. If we ignore the air resistance, what are the direction and size of the net force acting on the ball while it is traveling upward?
Net average force using the concepts of Newton’s second law.
During the Millikan experiment used to determine the charge on the electron, a charged polystyrene microsphere is released in still air in a known vertical electric field, How many excess electrons are on the sphere
An oscillating LC circuit consists of an ideal 56 mH inductor and an ideal 5600 pF capacitor. find the maximum current in the circuit
Two balls with a net charge of - 4.0 ?C and + 10.0 ?C are separated by 2 cm. What is the electrostatic force on the positive charge
Two converging lenses which have focal lengths of +3.0 cm and +2.0 cm are 10 cm away from each other. find the height of the image formed by the seconds lens
When your friend is riding a 6.50-kg bicycle, the weight is supported more on the back tire and less on the front tire. what is your friend's weight
A projectile is launched at an angle of 34^{\circ} above the horizontal. The projectile has a mass of 1.50 kg and is given an initial speed of 20.0 m/s. What is the initial kinetic energy of the projectile
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