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A 9 kilogram hanging mass is connected by a string over a pulley to a 5 kilogram block sliding on a flat table. If the coefficient of sliding friction is 0.2, evaluate what the tension in the string.
A volleyball play jumps into the air by first lowering his body by. .4 m and then accelerating by straightening his legs rapidly. what is the force exerted by his feet on the floor
A round pipe of varying diameter carries petroleum from a wellhead to a refinery. At the wellhead the pipe\'s diameter is 54.7 cm and the flow speed of the petroleum is 13.9 m/s. what is the pipe\'s diameter at the refinery
A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. Find the total sound intensity that the man hears when he is at his initial position halfway between the speakers
A horizontal applied force, F, pulls a 19.8 kilogram crate across the floor at constant speed. evaluate how much work does the applied force do
A spherical hot air baloon is initially filled with air at 118 kPa and 18°C and has an initial diameter of 4 m. What is the rate of change of the balloon's diameter when it reaches the inflated diameter
A guitar player tunes the fundamental frequency of a guitar string to 300 Hz. (a) What will be the fundamentalfrequency if she then increases the tension in the string by 20%?
Helium (He), a monatomic gas, fills a 0.012 m3 container. The pressure of the gas is 6.90x 10^5 Pa. How long would a 0.25 hp engine have to run (1 hp = 746 W) to produce an amount of energy equal to internal energy of this gas.
an object having a mass of 8.0 g and a charge of 10.0 x 10-5 c is placed in a uniform electric field e where ex 2.00 x
a 15kg block is accelerated at 2.4m/s^2 up a frictionless plane inclined at 5 degrees to the horizontal, wth the speed increasing from 10m/s to 35m/s. what is the change in the blocks mechanical energy
Three forces in the x-y plane act on a 5.80 kg mass: 15.30 N directed at 59o, 12.20 N directed at 170o, Calculate the direction of the resultant force using the same sign convention as above
The electric field component of a sinusoidal electromagnetic wave traveling through a plastic cylinder is given by the equation E = (5.35(V/m))cos[(1.39x10^7 (rad/m))x-(3.02x10^15(rad/s))t]
A transformer has a primary coil with 1200 turns and a secondary coil with 225.0 turns. what is the voltage output from the secondary coil
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