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A ball is dropped from rest at the top of a 6.10 m tall building, falls straight downward, collides inelastically with the ground and bounces back. The ball loses 10.0% of its kinetic energy every time it collides with the ground. How many bounces canthe ball make and still reach a window sill that is 2.44m above the ground?
A plane is headed due west with an air speed of 224 m/s. The wind blows south at 19.0 m/s. Find the velocity of the plane relative to the earth
The electric motor of a model train accelerates the train from rest to 0.740 m/s in 34.0 ms. Find the average power delivered to the train during its acceleration
a rigid structure consisting of a circular hoop of radius R and mass m, and a square made of four thin bars, each of length R and mass m. What is its angular momentum about that axis
A student (m = 63kg) falls freely from rest and strikes the ground. During the collision with the ground, he comes to rest in a time of 0.040 s. From what height did the student fall
A major motor company displays a die-cast model of its first automobile, made from 5.14 kg of iron. What mass of gold is needed to make the new model
Resistivity measurements on the leaves of corn plants are a good way to assess stress and overall health. What is the resistivity of the leaf tissue
An aluminum ring has an inside diameter of 1.793 cm, and an iron rod has a diameter of 1.798 cm, at what common temperature will the ring just slip onto the rod
You are to design a tungsten filament light bulb that has a power of 60W when it is connected to 120V at which condition its temperature is expected to be 1020C. Calculate the length of filament that you need
Sucrose is allowed to diffuse along 8.0 cm length of tubing filled with water. The tube is 5.6 cm^2 in cross-sectional area. The diffusion coefficient is equal to 5.0*10^-10 m^2/s, and 8.0* 10^-14 kg is transported along the tube in 19 s. What is the..
A space station, in the form of a wheel121m in diameter, rotates to provide an "artificial gravity" of2.70m/s2for persons who walk around on the inner wall of the outer rim. Find the rate of the wheel's rotation in revolutions per minute that will pr..
Suppose that potons are fired towards the large flat side of a positively charged conducting plate, How long does it take for the protons to hit the plate
Three particles of mass m = 2.4 kg are fastened to three rods of length d = 0.69 m and negligible mass. The rigid assembly rotates about point O at angular speed ? = 7.5 rad/s. About O, what are (a) the rotational inertia of the assembly, (b) the mag..
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