What is the final velocity for object
A 80 kg astronaut pushes off against a 640 kg satellite producing a force of 120 N for .5 seconds. What is the acceleration of each object during the push? what is the final velocity for each object, and how far apart are they at .5 seconds?
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One of the harmonics of a column of air open at one end and closed at the other has a frequency of 448 Hz and the next higher harmonic has a frequency of 576 Hz. The speed of sound in air is 343 m/s. a) What is the fundamental frequency?
A 53.0 kg ballet dancer stands on her toes during a performance with four square inches (26.0 cm2) in contact with the floor. What is the pressure exerted by the floor over the area of contact in the following cases? If the dancer is leaping upwar
A 2.50 kg block is in equilibrium on an incline of 31.6?. The acceleration of gravity is 9.81 m/s2. What is Fn of the incline on the block?
An ideal gas occupies 329 cm3 at 20°C. At what temperature will it occupy 980 cm3 if the pressure remains constant? New temperature in Celsius?
A 0.16 kg block on a horizontal frictionless surface is attached to a spring whose force constant is The block is pulled from its equilibrium position at to a displacement and is released from rest. The block then executes simple harmonic motion
What must the charge (sign and magnitude) of a particle of mass 1.45 g be for it to remain stationary when placed in a downward-directed electric field of magnitude 620 N/C? Use 9.8m/s/s for the magnitude of the acceleration due to gravity.
Sound traveling in air at 23°C enters a cold front where the air temperature is 2°C. If the sound frequency is 1500 Hz, determine the wavelength in the warmer air and in the colder air.
A 220 g block hangs from a spring with spring constant 12 N/m. At t=0;{rm s} the block is 31 cm below the equilibrium point and moving upward with a speed of 89.0 cm/s. What is the block's distance from equilibrium when the speed is 30 cm/s?
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