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1. A stationary boat in the ocean is experiencing waves from a storm. The waves move at59km/h and have a wavelength of 160m. The boat is at the crest of a wave. How much time elapses until the boat is first at the trough of a wave? Express your answer to two important figures and include the appropriate units.
2. In the deep ocean, a water wave with wavelength 95 m travels at 12 m/s. Assume a small boat is at the crest of this wave, 2.0m above the equilibrium position. What will be the vertical position of the boat 3.0s later? Express your answer to two important figures and include the appropriate units.
A pair of hedge trimmers are 45 cm long from the pivot to the end of the handles. how much force is applied to the branch
on a hot day a house is kept cool by an air conditioner. The outside temperature is 32 degrees celsius and the inside temperature is 21 degree celsius. what is the mechanical power that it requires to hold the inside temperature constant
A man of mass M1 = 81 kg is standing on a M2 = 6960 kg railroad flatcar that rolls without friction to the right with speed 3.6 m/s. Calculate the change in velocity (in m/s) of the flatcar, if the man runs to the left so that his speed relative t..
Through a thunderstorm, 3.8 s elapses between observing alighting flash and hearing the resulting thunder. Just about how far away in kilometres and miles was the lightning flash?
2 long parallel wires carry currents 20 A and 5 A in opposite directions the wires are separted by 20 cm what is the magnetic field between the two wires
find the time rocket reaches the peak height of trajectory.
In a game of basketball, a forward makes a bounce pass to the center. What horizontal distance does the ball cover before bouncing
The spring is then released. If the mass is attached to the spring, explain how far up the slope will the mass move before coming to rest? Express your answer using two significant figures.
In soccer, a speed record was set for kicking a soccer ball at 43m/s. If the soccer player kicked the ball from ground level at an angle of 30° from the horizontal, what would be the flight time of the soccer ball? Assume that air resistance is ne..
A solid cube of mass 40kg and edge length .30mrests on a horizontal floor. A person then pushes on the upper edgeof the cube with a horizontal force of magnitude F. At what valueof F will the cube start to tip? Assume the frictional force from the fl..
A 51.0 kg woman balances on one heel of a pair of high-heeled shoes. If the heel is circular and has a radius of 0.400 cm, what pressure does she exert on the floor
a projectile is projected from the origin with a velocity of 45.0 m/s at an angle of 30.0 degrees above the horizontal. what is the range of the projectile
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