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Water starts moving at 10meters per second a the top of the hill at a pressure of 1 atm. It moves down a pipe and exits at the bottom. The change in height is 5 meters. If the radius of the pipe at the top is 0.1 meters and the radius of the pipe at the bottom is 0.3 meters, what is the pressure and velocity of the water at the bottom of the hill?
An electron is accelerated to speed of 1.5*10^8 m/s. at that speed, compare the relativistic results to classical results for , find the electron rest energy according to the relativistic laws
A device used in radiation therapy for cancer contains 0.29 g of cobalt-60 (59.933 819 u). Determine the activity (in Bq) of the radioactive material
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
How many electrons would have to be added to one of these spheres to make it electrically neutral?
A car of mass 1.8 x10^3 kg is travelling east at a speed of 28m/s along a horizontal roadway. When its brakes are applied, the car stops in 5.8s. What is the average horizontal force exerted on the car even as it is braking.
water flows with soeed1 m/s from a small hole made at the bottom of a tank filled with water. find height of the tank
A person on a rotating stool with arms stretched out rotates at an angular speed of 5.00 rad/s. By what factor does the moment of inertia change
A 3.2-kg block of iron (c=0.11 kcal/kgoC) that has been brought to a temperature of 1,045oC is placed on top of a 2.4-kg block of ice (c=0.5 kcal/kgoC) that has been cooled to -50oC
A spherical shell has an outside radius of 2.6cm and an inside radius of a. The shell wall has uniform thickness and is made of a material with density 4.70g/ cm3. The space inside the shell is filled with a liquid having a density of 1.23g/cm3.
A 45.0 g ball of copper has a net charge of 2.1 µC. What fraction of the copper's electrons have been removed
Electron microscopy has proved invaluable for investigations of viruses, cell membranes and subcellular structures, bacterial surfaces, visual receptors, chloroplasts, and the contractile properties of muscles. The "lenses" of an electron microsco..
A hockey player got checked into the boards and was knocked unconscious. It takes 95N of force to drag the hockey player across the ice at a constant speed.
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