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The floor of a railroad flatcar is loaded with loose crates having a coefficient of static friction of 0.20 with the floor. If the train is initially moving at a speed of 46 km/h, find in how short a distance the train can be stopped at constant acceleration without causing the crates to slide over the floor? m
An ideal gas at 14.5 °C and a pressure of 1.10 x 105Pa occupies a volume of 4.17 m3. what will be the pressure of the gas
In downhill speed skiing a skier is retarded by both the air drag force on the body and the kinetic frictional force on the skis. Suppose the slope angle is ? = 32.5°, What is the terminal speed
In 1898, Pierre & Marie Curie isolated about 10mg of radium-226 from eight tons of uranium ore. How many radium nuclei would have decayed during this time
A system consists of two positive point charges, q1 and q2>q1. The total charge of the system is +62.0 x 10^-6 C, Find q1 and q2
An airplane flies 200 km due west from city A to city B and after that 295 km in the direction of 26.5° north of west from city B to city C.
A 2 micro-farad and a 5 micro-farad capacitors were connected in series to a 12 volt battery. After the capacitors were fully charged, the battery was disconnected. The capacitors were connected in parallel. Find the charge on each capacitor inthe pa..
During this experiment the first step in the procedure was the measurement of the string's mass and total lenght, Calculate lthe linear mass density of the string in g/cm
An exhaust tube from a steam generator is submerged in a large container of cool water. what is the change of entropy (in J/deg) of the steam
Singly charged uranium-238 ions are accelerated through a potential difference of 2.26 kV and enter a uniform magnetic field of magnitude 1.98 T directed perpendicular to their velocities. Determine the radius of their circular path
A transformer has an input coil by Nin = 450 turns and N out = 950 turns. If the voltage across the input coil has amplitude of 1.6 V, what is the voltage across the output circuit?
A wire in the shape of an equilateral triangle 13.6 cm on a side is placed in a uniform magnetic field of magnitude 0.136 T. If the field makes an angle of 71.8 ? With the plane of the triangle, decide the magnetic flux during the triangle.
A railroad freight car of mass 3.24 104 kg collides with a stationary caboose car. Find the mass of the caboose
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