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The great, grey-green, greasy Zambezi River flows over Victoria Falls in south central Africa. The falls are approximately 108m high. If the river is flowing horizontally at 3.6m/s just before going over the falls, what is the velocity of the water when it hits the bottom?
A certain musical instrument is a tube with one end open and the other end closed. The second-lowest frequency that it can play is 1500 Hz. What is the fundamental frequency
A steel aircraft carrier is 370 m long when moving through the icy North Atlantic at a temperature of 2°C. By how much does the carrier lengthen when it is travelling in the warm Mediterranean Sea at the temperature of 21 °C.
The barricade at the end of subway line has a large spring designed to compress 2.00 m when stopping a 1.00 x 10^5 kg train moving at 0,500 m/s. What speed would the train be going
Consider a a series circuit containing an inductor (100 mH), a capacitor (40 microF) and a resistor (50 ohms). It is connected to the AC mains (f = 60 Hz, VRMS = 120 V), What is the new value of capacitance
A ramp is a simple machine which can be used to load heavy items onto a truck. What is the mechanical advantage of a ramp that makes the angle of 26o regarding the horizontal.
In a piston cylinder assembly , the pressure and the tempreture of air are 200 KPa and the 500 c initially. The piston cross-sectional area is 0.2 m^2.The air is now cooled. what is the pressure in the cylinder
The distance from the Sun to Jupiter is 5.2 times longer than the Earth-Sun distance. Take the intensity of sunlight at the Earth to be 1383 W/m2. Find the intensity of sunlight at Jupiter
A small sphere of mass m and radius r slides down a smooth stationary large sphere of radius R under the action of gravity from a position of rest at the top. Find the value of theta at which the particle falls off
Find the buoyant force acting on the He balloon. The volume of the balloon might be calculated from the following. The balloon has a shape of a sphere with the diameter of 10 m. How many more mass may the balloon lift
An electron passes through a point 2.71 cm from a long straight wire as it moves at 36.3% of the speed of light perpendicularly toward the wire
Matthew pulls his little sister Sarah in a sled on an icy surface (no friction) with a force of 60 N at an angle of 600 upward from the horizontal
A ball is dropped from a height of 1.50 m and rebounds to a height of 1.20 m. Approximately how many rebounds will the ball make
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