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The distance between two telephone poles is 50.0m. When a 1.00kg bird lands on the telephone wire midway between the poles, the wire sags 0.200m. a) FBD b) How much tension does the bird produce in the wire? Ignore weight of wire
Define a lie in the strict or formal sense and explain what is meant by communication - what is the principal purpose of communication?
You carry a 7.0 kg bag of groceries across a 5.3 m room, where the room's flat floor is a 1.2 m above the ground. How much work do you do on the bag in the process
A solenoid that is 111 cm long has a cross-sectional area of 13.8 cm2. There are 958 turns of wire carrying a current of 7.62 A. Calculate the energy density of the magnetic field inside the solenoid
An aluminum cylinder is suspended in an unknown fluid by a spring scale. Outside the fluid, the object weighs 20N. In the fluid,
The first bright fringe of a diffraction grating of 600 ruling/mm is found at angle of 21 degrees.Find the wavelength of light of the source.
A 25 g glass tumbler contains 450 mL of water at 24°C. what is the final temperature of the drink
A spherical ball with a radius of 2.130×10-1 m is completely submerged in a fluid that has a density of 1.023×103 kg/m3. What is the buoyant force acting on the ball
A pipe open only at one end has a fundamental frequency of 214 Hz. A second pipe, initially identical to first pipe, is shortened by cutting off the portion of the open end. Now, as both pipes vibrate at their fundamental frequencies, the beat freque..
Certain stars at the end of their lives are thought to collapse combining their protons and electrons together to form a neutron star. Such a star could be thought of as a giant atomic nucleus.
An airplane has a mass of 20,000 kg and takes off under the control of a constant net force of 30,000 N. What is the net force that acts on the plane's 73 kg pilot.
A small block with a mass .120 kg is attached to a cordpassing through a hole in a frictionless, horizontal surface, What is the tension in the cord in the original situation when the block has speed v = .70m/s
An air bubble has a volume of 1.50 cm3 when it is released by a submarine 100 m below the surface of a lake. What is the volume of the bubble when it reaches the surface
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