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A pail of water is rotated in a vertical circle of radius 1.00 m (the approximate length of a person arm). What must be the minimum speed of the pail at the top of the cirlce if no water is to spillout.
A bowling ball weighing 71.2{\rm N} is attached to the ceiling by a 3.70{\rm m} rope. find the tension in the rope
suppose a high voltage dc generator produces a potential difference of 75. kv across an air gap distance of 1.25 cm.
A humorous scene in Akira Kurosawa's classic film The Seven Samurai shows the young samurai Kikuchiyo wading into a small stream and plucking a fish from it for his dinner.
A placekicker must kick a football from a point 36.0 m (about 40 yards) from the goal. Half the crowd hopes the ball will clear the crossbar, By how much does the ball clear or fall short of clearing the crossbar
Stone with a mass of 0.800 {rm kg} is attached to one end of a string 0.900 {rm m} long. The string will break if its tension exceeds 65.0 {rm N}. The stone is whirled in a horizontal circle on a frictionless tabletop; the other end of the string rem..
An airplane flies 200 km due west from city A to city B and then 295 km in the direction of 35.5° north of west from city B to city C, In straight-line distance, how far is city C from city A
A grindstone of a radius 4 m is firstly spinning with a radius of 8 rad/s. The angular speed is then increased to 12 rad/s over next 4.0 seconds. Suppose that the angular acceleration is constant. What is the average angular speed of grindstone.
A swimmer heading directly across a river 200 m wide reaches the opposite bank in 6 min 40 s. She is swept downstream 480 m. What is the speed of the current
The Earth and Moon are separated by about 400 ? 106 m. Suppose Mars is 1.6 1011 m from Earth and forms a right triangle with Earth and the Moon. determine the angular separation of Earth
The aire outside a hot-air balloon has a temperature of 17 C. Assume the pressure of the gas inside the balloon is roughly the same with the pressure outside of the balloon. What is the temperature of the air inside the balloon
Estimate the minimum absolute pressure (in pascals) that can be developed at the inlet of a pump to avoid cavitation if the fluid is carbon tetrachloride at 20 celsius
Steam at 100°C is added to ice at 0°C. Find the amount of ice melted and the final temperature when the mass of steam is 14 g and the mass of ice is 54 g. g °C
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