Determine the wavelength in the warmer air
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.
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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 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?
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.
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?
The 2-kg collar C is free to slide along the smooth shaft AB. Determine the acceleration of collar C if (a) the shaft is fixed from moving and (b) collar A is subjected to an acceleration of 2 m/s2 to the left. In all cases, the motion occurs in t
If a person can jump a horizontal distance of 3.0 m on Earth, how far could the person jump on the moon, where the free-fall acceleration is g/6 and g = 9.81 m/s2?
The final temperature of the system is 100°C. Neglect energy transfers with the environment. (a) How much energy (in calories) is transferred to the water as heat? (b) How much to the bowl? (c) What is the original temperature of the cylinder?
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