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A ship is floating on a lake. Its hold is the interior space beneath its deck; the hold is empty and is open to the atmosphere. The hull has a hole in it, which is below the water line, so water leaks into the hold. The effective area of the hole is 11.4 × 10-3 m2 and is located 2.0 m beneath the surface of the lake. What volume of water per second leaks into the ship?
Sunlight strikes a piece of crown glass at an angle of incidence of 30.0 degrees. Calculate the difference in the angle of refraction between a red (660.0 nm) and a blue (470.0 nm) ray
The horse on a carousel is 3.7m from the central axis. How fast is a child on the horse going
questiona machine part consists of a thin 40.0 cm long bar with small 1.15 kg masses fastened by screws to its ends.
a scanning electron microscope operating at an accelerating voltage of 10 kv accelerates electrons to 20 of the speed
A uniform disk with a mass of 813g and a radius of 17cm is rotating on frictionless bearings with a rotational speed of 18Hz, what is the new rotational speed of the disk
A biologist keeps a specimen of his favourite beetle embedded in a cube of polystyrene plastic. What is the beetle's actual distance beneath the surface
The sun radiates energy at a rate of 3.86 ? 1026 W. Its radius is 7.0 ? 108 m. If the distance from the Earth to the sun is 1.5 ? 1011 m, what is the intensity of solar radiation at the top of the Earth's atmosphere?
A 100 meter length of steel changes temperature by 30 C during the course of a day. If the coeffcient of thermal expansion of steel is 12 parts per million per C, what is the change in length of the steel
A racetrack has the shape of an inverted cone, as the drawing shows. On this surface the cars race in circles that are parallel to the ground, and the surface is at an angle = 40°. For a speed of 35 m/s, at what value of the distance d should a drive..
Supercapacitors, with capacitances of 1 F or more, are made with plates that have a spongelike structure with a very large surface area. Determine the surface area of a supercapacitor
The glass core of an optical fiber has an index of refraction 1.60.The index of refraction of the cladding is 1.48. What is the maximum angle a light ray can make
A satellite of mass 5400kg orbits the Earth and has a period of 6580s, determine the magnitude of the Earth's gravitational force on the satellite
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