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Spider man steps form the top of a large building. He falls freely from rest to the ground a distance of h. He falls a distance of h/4 in the last1.0 second of his fall. Find what is the height of the building?
A flat horizontal surface with an area of 505 cm2 is inside a uniform electric field of 1.40×104 N/C. What is the electric flux through the surface
A fan blade, initially at rest, rotates with a constant acceleration of 0.025 rad/s2. What is its angular speed at the instant it goes through an angular displacement of 4.2 rad.
A banked curve has been designed so that it is safest for a vehicle going 70mph. A 5512 lb vehicle travels with a speed of 60 mph on the curve. Calculate the force that the road exerts on the vehicle
An evacuated spherical diving bell containing a camera is in the ocean at a depth of 161 m. Find the magnitude of the total force on the port
A traveler flew due east from city A to city B 150 miles away, and then made a connecting flight to city C 250 miles away in a direction that is 60o north of west, Find the net displacement of the person
A motor boat haeds due east at 5 m/s acorss a river that flows toward the south at 5 m/s. If the river is 125m wide, how longs does it take the boat to cross the river.
A wind turbine converts some of the kinetic energy of the wind into electric energy. Suppose that the blades of a small wind turbine have length L = 3.7 m. What is the translational kinetic energy of this mass of air
The human eye can barely detect a star whose intensity at the earth's surface is 1.6*10^-11. how many photons per second enter the eye from the star
An ice chest at a beach party contains 15 cans of soda at 3 ° C. Each can of soda has a mass of 0.38 kg, determine the final temperature T of the soda and watermelon
How far is the second dark fringe to the right of the central bright fringe in the double-slit interference pattern seen on a screen 4 m from the slits? The slits are separated by 0.2 mm and are illuminated with monochromatic light of wavelength 597n..
One way to measure on another planet or moon by remote sensing is to measure how long it takes an object to fall a given distance. A lander vehicle on a distant planet records the fact that it takes 3.17 for a ball to fall freely 11.26 , starting fro..
The catapult on an aircraft carrier can take an aircraft from 0 to 83.1 m/s in 14.5 seconds, at which time the aircraft launches. What is the acceleration of the aircraft when it launches
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