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Two cars are moving. The first car has twice the mass of the second car but only half as much kinetic energy. When both cars increase their speed by 2.52 m/s, they then have the same kinetic energy. Calculate the original speeds of the two cars.
The first active volcano observed outside the Earth was discovered in 1979 on Io, one of the moons of Jupiter. Assume a volcano on another moon is observed to be ejecting material to a height of about 2.19 x10^5 m.
An object at rest explodes into three pieces of equal masses. One moves east at 23 m/s, while the second piece moves northwest at 14 m/s. Estimate the velocity of the third piece? Suppose each piece has a mass of 2 kg.
A fish swimming in a horizontal plane has velocity i = (4.00 + 1.00 ) m/s at a point in the ocean where the position relative to a certain rock is i = (14.0 ? 4.20 ) m. What are the components of the acceleration of the fish
a car of mass m accelerates from rest along a level straight track not at constant acceleration but with constant
A pump, used to move water through a tube, uses a piston 15 cm in diameter which moves 2.0 cm/s. what is the fluid velocity when the tube is 3.0 mm in diamter
A heavy rope used for as a mooring line for a cruise ship sags a shown. If the mass of the rope is 96 kg, what are the tensions in rope at A and B.
A light wave in air is incident on a water surface, (a) At what angle of incidence are the reflected and refracted waves at right angles to each other? What is the reflectivlty of the water for normal incidence? (c) At what angle of incidence is this..
A solar collector that can provide 1.0W of power forcharging the 3.0V batteries. What is the maximum charging current the solar collector could supply to fully discharged 3.0V bateries.
When the water turns to ice during the night, heat is free into the plants, thereby giving them a measure of protection against the falling temperature. Assume a grower sprays 7.64 kg of water at 0°C onto a fruit tree.
Air conditioners are rated by their coefficient of performance at 60F inside temperature and 96F outside temperature. What is the maximum possible coefficient of performance
Consider a dry air parcel initially at the surface (T=25 degrees celsius and p=980mb) that rises adiabatically to a final location at 900mb
A man stands at the midpoint between two speakers that are broadcasting an amplified static hiss uniformly in all directions. Find the total sound intensity that the man hears
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