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A parachutist of 60 kg descends at a constant speed of 4.4 m/s. What is the rate of increase of entropy of the parachute and the environment? The air temperature is 24 celcius. (in W/K)
If 1,000 gallons per minute (gpm) of water are flowing through a 4-inch (inside diameter) pipe, what is the average velocity of the water in the pipe
Three 45-? lightbulbs and three 70-? lightbulbs are connected in series. What is the total resistance of the circuit
The speed of light in a material is 0.52×c. What is the critical angle (in degrees) of a light ray at the interface between the material and a vacuum
A 4 kg block is acted upon by three horizontal forces. 10n (to left) 5n(short arrow to right) 25n to right. what is the net horizontal force acting on the block? what is the horizontal acceleration of the block?
What is the height h of the CM of the can and contents (d) If x is the height of the remaining soda at any given instant, find out x when com reaches its lowest point.
In order to manufacture these coffee tables, the company would need to incur $525,000 in fixed costs for new equipment. Calculate the break-even point of the coffee tables in units sold. Illustrate what would be the total revenue at the break-even po..
The gas in a cylindrical container has a pressure of 1.0 multiply.gif 105 Pa and is at room temperature (293 K). What is the final temperature of the gas
The temperature of 3.25 mol of an ideal diatomic gas is increased by 23.5 ?C without the pressure of the gas changing. By how much does the rotational kinetic energy of the gas increase
A 55-kg swimmer is standing on a stationary 210-kg floating raft. The swimmer then runs off the raft horizontally with a velocity of +4.6 meter per second relative to the shore. Calculate the recoil velocity that the raft would have if there were ..
a car moving with a speed of 15 ms is slowed to a speed of 5 ms without changing its direction of motion covering a
If the entrance velocity into the pipe is 12.5 m/s, what is the rate of flow of the material (air) 'Rm'? What is the velocity 'Vf' when the air is ejected into the surroundings at 1 atm through a nozzle
A frictionless pulley has the shape of a uniform solid disk of mass 2.1 and radius 10. A 1.10 stone is attached to a very light wire that is wrapped around rim of pulley and the system is released from rest.
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