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A spring with a spring constant of 270 n/m iscompressed by 14cm.a 880g ball is attached to the end and the spring is released.what is the initial acceleration of the ball? what is the velocity of the ball as it passes through equilibrium point?
For a coal gasification project being planned, 26,000 tons of coal per day is used to produce 250,000,000 cubic feet per day of natural gas. If the coal is rated at 8700 Btu/lb and the gas at 950 Btu/cubic ft, what will be the efficiency of this plan..
A space vehicle is traveling at 4200 km/h relative to the Earth when the exhausted rocket motor is disengaged, What is the speed (km/h) of the command module relative to Earth after the separation
The ball thrower, who has a mass of 100 kg, can throw a 500 g ball with a speed of 10 m/s. What constant force must the athlete exert on the ball
q.what is the magnitude of the apparent weight of a 84 kg astronaut 4800 km from the center of the earths moon in a
Consider a three dimensional rectangular infinite potential well with sides of length L, 2L and 3L. What is the energy of the first excited state relative to the energy of the ground state
The clapper is a small, 1.8 kg mass attached to one end of a slender rod that has length L and negligible mass. The other end of the rod is attached to the inside of the bell
You are sitting in a wagon and rolling horizontally at 5 m/s when your little sister jumps into your lap as you pass by. Calculate the speed of the wagon after your little sister jumps in
A stone is thrown upward with an initial velocity of 6 m/s. What maximum height will the stone reach?
A spaceship takes a nonstop journey to a planet and returns in 100 hours according to a clock on the spaceship. how much time has elapsed the earth
Four charges are located in a plane as follows: q1 = -5 uC at (4,0) m; q2 = -3 uC at (4,4) m; q3 = -4 uC at (0,4) m; q4 = -2 uC at (0,0) m. Find the magnitude and direction of the resultant field at (2,2)
Picture a wave with crests every 1.8m apart. If a crestpasses you every 2.6s, what is the propagation speed of the wave?
One cylinder in the diesel engine of a truck has an initial volume of 600 cm3. Air is admitted to the cylinder at 30 0C and a pressure of 1.0 atm. What are its final temperature and volume
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