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A proposed space stationincludes living quarters in a circular ring 54.5 m in diameter. Atwhat angular speed should the ring rotate so the occupants feelthat they have the same weight as they do on Earth?
A heat engine operates in a Carnot cycle between72.0°C and345°C. It absorbs21,600J of energy per cycle from the hot reservoir. How much energy does it expel in each cycle by heat
it took a force of 250 N to pull a crate weighing 765 N across the floor. the work done was 3500 J. how far was the crate moved
A simple pendulum has mass 1.28 kg and length 0.600 m. What is the period of the pendulum near the surface of Earth
1. gaseous helium is to be used to quench a hot piece of metal. the helium is in storage in an insulated tank with
The drawing shows three particles far away from any other objects and located on a straight line. Find the net gravitational force
The radius of the aorta is about 1.0cm , and the blood passing through it has a speed of about 46cm/s, Calculate the pressure drop per cm along the aorta.
charge a and charge b are 3.20 m apart and charge a is 3.50 c and charge b is 4.10 c. charge c is located between them
an attack helicopter is equipped with a 20mm cannon tat fires 112 g shells in the foward derection with a muzzle speed
The potential difference between two parallel conducting plates in vacuum is 475 V, What is the kinetic energy of the alpha particle when it reaches the other plate
A rope of negligible mass is wrapped around a 225 kg solid cylinder of radius 0.40 m. The cylinder is suspended some meters off the ground with its axis oriented horizontally, and turns on that axis without friction.
the 500m short track speed skating olympic world record is 39937sec held by american jr celski. calculate jrs average
A displacement vector at an angle of 150 degrees (counter clockwise) from the x axis has a y component equal to 123 meters
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