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A bucket in an old well is hoisted upward by a rope which winds up on a cylinder having a radius of 0.050 m. How many rev/s must the cylinder turn if the bucket is raised at a speed of 0.35 m/s?
A charge of -3.8 × 10-9 C is at the origin and a charge of 8.1 × 10-9 C is on the x-axis at x = 3 m. At what location on the x-axis is the electric field zero
A 170g baseball is pitched at 30m/s spinning at 53rad/s . You can treat the baseball as a uniform solid sphere of radius 4.5cm. What fraction of its kinetic energy is rotational
What is the centripetal acceleration of a helicopter flying in a horizontal circle of a diameter 510 m at a speed of 120 m/s
Let's say you measure an average acceleration to be 0.4045 ms-2. What is the height (in centimeters) of the riser block
An object is placed 60 cm to the left of a converging lens having a focal length of 35cm. Calculate the magnification of the final image
A hare and a tortoise compete in a race over a straight course 2.25 km long. The tortoise crawls at a speed of 0.180 m/s toward the finish line. For how long in time was the hare stationary
A block of mass m=1.8 kg slides along the inside of a hemispherical bowl of radius r=0.8 m. find the normal force on the block by the bowl
Assume the car is moving at 72 km/hr when the brake pedal is applied. Assume that the radius of the wheel is 15 cm. What is the maximum power.
A metal wire of resistance R is cut into three equal pieces that are then braided together side by side to form a new cable with length equal to one-third of the original length
A 755N diver drops from a board 10m above the water's surface. Find out the diver's speed 5m above the water's surface. Then find the diver's speed just before striking the water.
An electron is released to accelerate from point 1 to point 2 in a potential region. The electric potentials at these points are V1 = -35 V and V2 = +200 V. Calculate the change in potential energy of this electron
series RACA socket has some resistance and inductors and capacitors frequency is 50Hz and generator is 100 volts. Determine the inductive reactance
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