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Johanna sits down at the beach on a summer evening and see a piece of wood float and lie to the beach/ waterside. Find how long does it take for the piece of wood to move from its uppermost position to its lowest position during its movement up and down as waves pass? These waves move with speed 1.2 m/s and the wavelength is 0.60 m.
in gaseous sodium chloride chloride ions have one more electron than they have protons and sodium ions have one more
Water at a pressure of 4.3 atm at street level flows into an office building at a speed of 0.6 m/s through a pipe 5 cm in diameter. What is the pressure in the top floor pipe
A worker uses a wheelbarrow to haul 225 lb of brick. What upward force does the worker exert to lift the handles of the wheelbarrow
In 1956, Frank Lloyd Wright proposed the construction of a mile-high building in Chicago. Suppose the building had been constructed. find the change in your weight
A simple harmonic oscillator consists of the block of mass 1.90 kg attached to a spring of spring constant 196 N/m. while t = 3.00 s, position and velocity of the block are x = +0.129 m and v = +3.415 m/s.
q1. a cube of ice is taken from the freezer at -9.4degc and placed in a 94 g aluminium calorimeter filled with 315 g of
question if barium needs a minimum frequency of 6.07x1014 s-1 to eject electrons calculate the kinetic energy of the
A spaceship moves away from Earth at a speed 0.297 c, Determine the speed of the shuttle relative to Earth
The index of refraction of water is 1.29. What is the speed of light in water? What is the wavelength in water of a light wave with a vacuum wavelength of 525 nm?
liquid helium has a temperature of only 4.24 k and is in equilibrium with its vapor at atmospheric pressure. calculate
An automobile suspension involves both leaf springs with stiffness k and shock absorbers resist motion with a force -uv. The system is critically damped. If a car has mass 2000 kg and has shock absorbers with u = 2.5 x10^4 kg/s, how much should the c..
After a tornado, a 0.60 g straw was found embedded 2.5 cm intothe trunk of a tree. what was the speed of the straw when it hit the tree
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