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Very fine smoke particles are suspended in air. The translationalrms speed of a smoke particle is 2.65*10-3 m/s, and the temperature is316 K. What is the mass of a smoke particle?
Crew members attempt to escape from a damaged submarine 200 m below the surface. What force must they apply to a pop-out hatch, which is 1.2 m by 0.70 m, to push it out at that depth? Assume that the density of the ocean water is 1025 kg/m3.
A block of mass m = 2.10 kg slides down a 30.0° incline which is 3.60 m high. Determine the speeds of the two blocks after the collision
Needing help, secretary of the United States Department of Agriculture asked your teacher, "If a chicken and a half can lay an egg and a half in a day and a half, how many days will it takes three chickens to lay twenty eggs".
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. how fast will the disk be turning
A copper sheet of thickness 3.90 mm is bonded to a steel sheet of thickness 4.40 mm. The outside surface of the copper sheet is held at a temperature of 170.0 °C and the steel sheet at 34.0 °C.
In extremely cold weather conditions where the inside thermostat is set to 27 C and the outside temperature is -20 C, How much energy might you lose in one week
Two toy locomotives approach each other along the same line, and upon collision both stop dead still. What is the mass of the slower locomotive
In a diesel engine, the piston compresses air at 306 K to a volume that is 0.062 of the original volume and a pressure that is 48 times the original pressure. What is the temperature of the air after the compression?
A circular coil with one turn is in a perpendicular (time dependent) magnetic field given by B = 1.400 - 0.0500 t Tesla, where time t is in seconds. Calculate the radius of the coil
a rocket rises vertically from rest with an acceleration of 3.2 ms2 until it runs out of fuel at an altitude of 870 m.
A lighter-than-air balloon and its load of passengers and ballast are floating stationary above the earth. Ballast is weight (of negligible volume) that can be dropped overboard to make the balloon rise.
A stunt pilot with mass of 80 kg performs a vertical circular dive of radius 800 m. What forces are acting on the pilot
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