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A point source of light is 84.2 cm below the surface of a body of water. Find the diameter of the circle at the surface through which light emerges from the water. Water has an index of refraction of 1.33.
A thin double convex lens is to focus the image of an object onto a screen so that the image is life-sized. The lens has equal radii of 76 cm and the refractive index is n = 1.4. (a) What is the distance d from image to screen? (b) What is the total ..
A 300 hp car engine can deliver that maximum power at 6000 rpm. What is the engine's torque at that speed
An open container holds ice of mass 0.595kg at a temperature of -13.5 celcius . The mass of the container can be ignored. How much time passes before the ice starts to melt
A loop of wire has the shape shown in the drawing. The top part of the wire is bent into a semicircle of radius r = 0.23 m. The normal to the plane of the loop is parallel to a constant magnetic field ( = 0°) of magnitude 0.73 T. What is the change ?..
A high-intensity desk lamp is rated at 75 W, but its bulb requires only 9 V. The lamp contains a transformer that converts 110 V household electricity. What is the resistance of the bulb when it is on
A mass-spring system oscillates with an amplitude of 5.20 cm. If the spring constant is 247 N/m and the mass is 535 g, Determine the maximum speed of the object
A 92.7-kg climber is scaling the vertical wall of a mountain. His safety rope is made of a material that, How much is the rope stretched when it breaks his fall and momentarily brings him to rest
A crate of eggs is located in the middle of the flat bed of a pickup truck as the truck negotiates a curve in the flat road. how fast can the truck be moving without the crate sliding
question1asteroids can be classified into two broad groups based on their composition and location carbon-rich
You push your physics book 1.70{\rm m} along a horizontal tabletop with a horizontal push of 2.80{\rm N} while the opposing force of friction is 0.700{\rm N}
A small box of mass m1 is sitting on a board of mass m2 and length L . The board rests on a frictionless horizontal surface
A 0.15-kg of aluminum contains 0.2 kg of water. Initially, the water and the cup have a com- mon temperature of 18 0C, find the specific heat capacity of the unknown material
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